/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:04:36,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:04:36,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:04:36,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:04:36,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:04:36,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:04:36,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:04:36,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:04:36,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:04:36,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:04:36,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:04:36,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:04:36,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:04:36,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:04:36,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:04:36,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:04:36,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:04:36,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:04:36,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:04:36,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:04:36,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:04:36,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:04:36,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:04:37,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:04:37,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:04:37,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:04:37,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:04:37,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:04:37,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:04:37,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:04:37,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:04:37,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:04:37,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:04:37,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:04:37,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:04:37,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:04:37,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:04:37,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:04:37,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:04:37,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:04:37,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:04:37,012 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 11:04:37,026 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:04:37,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:04:37,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:04:37,028 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:04:37,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:04:37,028 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:04:37,028 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:04:37,029 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:04:37,029 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:04:37,029 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:04:37,029 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:04:37,029 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:04:37,030 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:04:37,030 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:04:37,030 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:37,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:04:37,030 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:04:37,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:04:37,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:04:37,031 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:04:37,031 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:04:37,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:04:37,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:04:37,032 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:04:37,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:04:37,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:04:37,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:04:37,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:04:37,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:04:37,201 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:04:37,215 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:04:37,219 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:04:37,220 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:04:37,221 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:04:37,221 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:04:37,291 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_ld2olh/tmp/e6e284e45d294822a2fc85ae5448be17/FLAG56d1b7861 [2020-07-01 11:04:37,619 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:04:37,620 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:04:37,627 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_ld2olh/tmp/e6e284e45d294822a2fc85ae5448be17/FLAG56d1b7861 [2020-07-01 11:04:38,029 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_ld2olh/tmp/e6e284e45d294822a2fc85ae5448be17 [2020-07-01 11:04:38,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:04:38,041 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:04:38,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:04:38,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:04:38,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:04:38,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:04:38" (1/1) ... [2020-07-01 11:04:38,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3e1607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:38, skipping insertion in model container [2020-07-01 11:04:38,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:04:38" (1/1) ... [2020-07-01 11:04:38,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:04:38,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:04:38,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:04:38,301 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:04:38,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:04:38,331 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:04:38,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:38 WrapperNode [2020-07-01 11:04:38,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:04:38,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:04:38,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:04:38,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:04:38,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:38" (1/1) ... [2020-07-01 11:04:38,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:38" (1/1) ... [2020-07-01 11:04:38,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:04:38,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:04:38,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:04:38,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:04:38,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:38" (1/1) ... [2020-07-01 11:04:38,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:38" (1/1) ... [2020-07-01 11:04:38,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:38" (1/1) ... [2020-07-01 11:04:38,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:38" (1/1) ... [2020-07-01 11:04:38,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:38" (1/1) ... [2020-07-01 11:04:38,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:38" (1/1) ... [2020-07-01 11:04:38,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:38" (1/1) ... [2020-07-01 11:04:38,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:04:38,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:04:38,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:04:38,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:04:38,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:38" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:04:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:04:38,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:04:38,648 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:04:38,648 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 11:04:38,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:04:38 BoogieIcfgContainer [2020-07-01 11:04:38,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:04:38,652 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:04:38,652 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:04:38,655 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:04:38,655 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:04:38" (1/1) ... [2020-07-01 11:04:38,669 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 13 edges [2020-07-01 11:04:38,671 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:04:38,672 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:04:38,672 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:04:38,672 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:04:38,674 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:04:38,675 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:04:38,675 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:04:38,692 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:04:38,711 INFO L200 BlockEncoder]: SBE split 4 edges [2020-07-01 11:04:38,715 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 11:04:38,717 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:04:38,727 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 11:04:38,729 INFO L70 RemoveSinkStates]: Removed 4 edges and 2 locations by removing sink states [2020-07-01 11:04:38,730 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:04:38,731 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:04:38,731 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:04:38,731 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:04:38,731 INFO L313 BlockEncoder]: Encoded RCFG 5 locations, 11 edges [2020-07-01 11:04:38,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:04:38 BasicIcfg [2020-07-01 11:04:38,732 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:04:38,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:04:38,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:04:38,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:04:38,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:04:38" (1/4) ... [2020-07-01 11:04:38,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f389630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:04:38, skipping insertion in model container [2020-07-01 11:04:38,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:38" (2/4) ... [2020-07-01 11:04:38,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f389630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:04:38, skipping insertion in model container [2020-07-01 11:04:38,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:04:38" (3/4) ... [2020-07-01 11:04:38,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f389630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:04:38, skipping insertion in model container [2020-07-01 11:04:38,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:04:38" (4/4) ... [2020-07-01 11:04:38,742 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:04:38,753 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:04:38,760 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:04:38,775 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:04:38,800 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:04:38,800 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:04:38,801 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:04:38,801 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:04:38,801 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:04:38,801 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:04:38,801 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:04:38,801 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:04:38,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-07-01 11:04:38,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:04:38,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-07-01 11:04:38,879 INFO L268 CegarLoopResult]: For program point L17(lines 17 27) no Hoare annotation was computed. [2020-07-01 11:04:38,880 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:04:38,880 INFO L268 CegarLoopResult]: For program point L23(lines 23 26) no Hoare annotation was computed. [2020-07-01 11:04:38,880 INFO L271 CegarLoopResult]: At program point L23-2(lines 16 28) the Hoare annotation is: true [2020-07-01 11:04:38,880 INFO L268 CegarLoopResult]: For program point L19(lines 19 20) no Hoare annotation was computed. [2020-07-01 11:04:38,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:04:38 BasicIcfg [2020-07-01 11:04:38,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:04:38,889 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:04:38,890 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:04:38,893 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:04:38,894 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:04:38,894 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:04:38" (1/5) ... [2020-07-01 11:04:38,895 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7edcd701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:04:38, skipping insertion in model container [2020-07-01 11:04:38,895 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:04:38,895 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:04:38" (2/5) ... [2020-07-01 11:04:38,895 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7edcd701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:04:38, skipping insertion in model container [2020-07-01 11:04:38,895 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:04:38,895 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:04:38" (3/5) ... [2020-07-01 11:04:38,896 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7edcd701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:04:38, skipping insertion in model container [2020-07-01 11:04:38,896 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:04:38,896 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:04:38" (4/5) ... [2020-07-01 11:04:38,896 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7edcd701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:04:38, skipping insertion in model container [2020-07-01 11:04:38,897 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:04:38,897 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:04:38" (5/5) ... [2020-07-01 11:04:38,898 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:04:38,925 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:04:38,926 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:04:38,926 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:04:38,926 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:04:38,926 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:04:38,926 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:04:38,926 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:04:38,927 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:04:38,930 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-07-01 11:04:38,947 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:04:38,947 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:38,947 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:38,954 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:04:38,954 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:04:38,954 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:04:38,954 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-07-01 11:04:38,955 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:04:38,955 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:38,955 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:38,955 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:04:38,955 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:04:38,960 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [38] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|, ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_#t~nondet7, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post6, ULTIMATE.start_main_#t~post4, ULTIMATE.start_main_#t~post8, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~b~0] 3#L23-2true [2020-07-01 11:04:38,961 INFO L796 eck$LassoCheckResult]: Loop: 3#L23-2true [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 5#L17true [55] L17-->L23: Formula: (and (> 0 v_ULTIMATE.start_main_~b~0_6) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_9)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post6] 6#L23true [42] L23-->L23-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet7_5|) InVars {ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_5|} OutVars{ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet7] 3#L23-2true [2020-07-01 11:04:38,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:38,967 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 1 times [2020-07-01 11:04:38,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:38,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154780975] [2020-07-01 11:04:38,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:39,041 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:39,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:39,043 INFO L82 PathProgramCache]: Analyzing trace with hash 67095, now seen corresponding path program 1 times [2020-07-01 11:04:39,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:39,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094713343] [2020-07-01 11:04:39,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:39,066 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:39,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:39,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2092883, now seen corresponding path program 1 times [2020-07-01 11:04:39,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:39,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094923497] [2020-07-01 11:04:39,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:39,083 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:39,146 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:39,147 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:39,147 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:39,148 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:39,148 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:04:39,148 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:39,148 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:39,148 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:39,148 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:04:39,149 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:39,149 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:39,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:39,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:39,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:39,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:39,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:39,320 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:39,320 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:39,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:39,328 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:39,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:04:39,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:39,409 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:04:39,411 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:39,411 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:39,411 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:39,412 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:39,412 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:04:39,412 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:39,412 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:39,412 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:39,412 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:04:39,412 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:39,413 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:39,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:39,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:39,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:39,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:39,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:39,571 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:39,577 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:39,583 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:39,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:39,586 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:39,587 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:39,587 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:39,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:39,591 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:39,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:39,595 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:04:39,603 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:04:39,603 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:39,609 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:04:39,610 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:04:39,611 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:04:39,611 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-07-01 11:04:39,646 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:04:39,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:39,692 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:04:39,694 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:39,704 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:39,705 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:39,802 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:39,803 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:39,809 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 11:04:39,814 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 11:04:39,816 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states. Second operand 4 states. [2020-07-01 11:04:39,945 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states.. Second operand 4 states. Result 18 states and 38 transitions. Complement of second has 10 states. [2020-07-01 11:04:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 11:04:39,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:04:39,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 31 transitions. [2020-07-01 11:04:39,952 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 31 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 11:04:39,953 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:39,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 31 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 11:04:39,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:39,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 31 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 11:04:39,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:39,962 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 38 transitions. [2020-07-01 11:04:39,963 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 11:04:39,968 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 13 states and 26 transitions. [2020-07-01 11:04:39,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-07-01 11:04:39,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-07-01 11:04:39,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 26 transitions. [2020-07-01 11:04:39,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:04:39,970 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 26 transitions. [2020-07-01 11:04:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 26 transitions. [2020-07-01 11:04:39,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2020-07-01 11:04:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-01 11:04:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 24 transitions. [2020-07-01 11:04:40,000 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 24 transitions. [2020-07-01 11:04:40,001 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 24 transitions. [2020-07-01 11:04:40,001 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:04:40,001 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 24 transitions. [2020-07-01 11:04:40,002 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:04:40,002 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:40,002 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:40,002 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:04:40,002 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:04:40,003 INFO L794 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY [38] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|, ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_#t~nondet7, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post6, ULTIMATE.start_main_#t~post4, ULTIMATE.start_main_#t~post8, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~b~0] 83#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 79#L17 [39] L17-->L19: Formula: (and (= (+ v_ULTIMATE.start_main_~y~0_7 1) v_ULTIMATE.start_main_~y~0_6) (= 0 v_ULTIMATE.start_main_~b~0_4)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 84#L19 [2020-07-01 11:04:40,003 INFO L796 eck$LassoCheckResult]: Loop: 84#L19 [57] L19-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_5 1) (> 0 |v_ULTIMATE.start_main_#t~nondet5_3|)) InVars {ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_3|} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_2|, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_~b~0] 87#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 88#L17 [39] L17-->L19: Formula: (and (= (+ v_ULTIMATE.start_main_~y~0_7 1) v_ULTIMATE.start_main_~y~0_6) (= 0 v_ULTIMATE.start_main_~b~0_4)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 84#L19 [2020-07-01 11:04:40,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:40,004 INFO L82 PathProgramCache]: Analyzing trace with hash 67495, now seen corresponding path program 1 times [2020-07-01 11:04:40,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:40,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517167797] [2020-07-01 11:04:40,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:40,018 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:40,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:40,019 INFO L82 PathProgramCache]: Analyzing trace with hash 85754, now seen corresponding path program 1 times [2020-07-01 11:04:40,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:40,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736645125] [2020-07-01 11:04:40,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:40,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736645125] [2020-07-01 11:04:40,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:04:40,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-07-01 11:04:40,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850568115] [2020-07-01 11:04:40,063 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 11:04:40,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:04:40,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 11:04:40,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 11:04:40,067 INFO L87 Difference]: Start difference. First operand 11 states and 24 transitions. cyclomatic complexity: 15 Second operand 3 states. [2020-07-01 11:04:40,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:04:40,098 INFO L93 Difference]: Finished difference Result 19 states and 38 transitions. [2020-07-01 11:04:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 11:04:40,101 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 38 transitions. [2020-07-01 11:04:40,102 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 11:04:40,103 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 17 states and 36 transitions. [2020-07-01 11:04:40,103 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-07-01 11:04:40,104 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-07-01 11:04:40,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 36 transitions. [2020-07-01 11:04:40,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:04:40,104 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 36 transitions. [2020-07-01 11:04:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 36 transitions. [2020-07-01 11:04:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-01 11:04:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-01 11:04:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 36 transitions. [2020-07-01 11:04:40,108 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 36 transitions. [2020-07-01 11:04:40,109 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 36 transitions. [2020-07-01 11:04:40,109 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:04:40,109 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 36 transitions. [2020-07-01 11:04:40,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 11:04:40,110 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:40,110 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:40,110 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:04:40,110 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:04:40,111 INFO L794 eck$LassoCheckResult]: Stem: 118#ULTIMATE.startENTRY [38] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|, ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_#t~nondet7, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post6, ULTIMATE.start_main_#t~post4, ULTIMATE.start_main_#t~post8, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~b~0] 119#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 115#L17 [39] L17-->L19: Formula: (and (= (+ v_ULTIMATE.start_main_~y~0_7 1) v_ULTIMATE.start_main_~y~0_6) (= 0 v_ULTIMATE.start_main_~b~0_4)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 126#L19 [2020-07-01 11:04:40,111 INFO L796 eck$LassoCheckResult]: Loop: 126#L19 [45] L19-->L23-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet5_5|) InVars {ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_5|} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5] 124#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 130#L17 [39] L17-->L19: Formula: (and (= (+ v_ULTIMATE.start_main_~y~0_7 1) v_ULTIMATE.start_main_~y~0_6) (= 0 v_ULTIMATE.start_main_~b~0_4)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 126#L19 [2020-07-01 11:04:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:40,111 INFO L82 PathProgramCache]: Analyzing trace with hash 67495, now seen corresponding path program 2 times [2020-07-01 11:04:40,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:40,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824721081] [2020-07-01 11:04:40,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:40,124 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:40,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:40,125 INFO L82 PathProgramCache]: Analyzing trace with hash 74222, now seen corresponding path program 1 times [2020-07-01 11:04:40,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:40,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568639434] [2020-07-01 11:04:40,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:40,134 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:40,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:40,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2010787976, now seen corresponding path program 1 times [2020-07-01 11:04:40,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:40,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359199614] [2020-07-01 11:04:40,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:40,149 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:40,181 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:40,182 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:40,182 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:40,182 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:40,182 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:04:40,182 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:40,182 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:40,182 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:40,183 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:04:40,183 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:40,183 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:40,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:40,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:40,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:40,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:40,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:40,267 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:40,267 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:40,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:40,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:40,283 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:40,283 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=0} Honda state: {ULTIMATE.start_main_#t~nondet5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:40,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:40,321 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:40,326 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:40,326 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:40,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:40,363 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:40,367 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:40,368 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~b~0=0} Honda state: {ULTIMATE.start_main_~b~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:40,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:40,404 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:40,408 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:40,409 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4=0} Honda state: {ULTIMATE.start_main_#t~post4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:40,446 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:40,447 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:40,487 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:04:40,488 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:40,554 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:04:40,556 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:40,556 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:40,556 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:40,556 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:40,557 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:04:40,557 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:40,557 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:40,557 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:40,557 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:04:40,557 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:40,558 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:40,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:40,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:40,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:40,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:40,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:40,651 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:40,652 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:40,661 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:40,663 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:40,664 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:40,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:40,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:40,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:40,665 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:40,665 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:40,667 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:40,702 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:40,704 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:40,704 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:40,705 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:40,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:40,705 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:40,706 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:40,706 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:40,708 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:40,742 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:40,744 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:40,744 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:40,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:40,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:40,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:40,746 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:40,746 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:40,748 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:40,782 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:40,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:40,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:40,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:40,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:40,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:40,785 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:40,785 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:40,787 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:40,821 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:40,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:40,824 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:40,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:40,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:40,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:40,825 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:40,825 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:40,829 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:04:40,833 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:04:40,833 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:40,836 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:04:40,837 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:04:40,837 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:04:40,837 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~n~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-07-01 11:04:40,867 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:04:40,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:40,898 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:04:40,898 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:40,905 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:40,906 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:40,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:40,944 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:40,944 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:40,960 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 11:04:40,960 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 11:04:40,960 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 17 states and 36 transitions. cyclomatic complexity: 21 Second operand 4 states. [2020-07-01 11:04:41,041 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 17 states and 36 transitions. cyclomatic complexity: 21. Second operand 4 states. Result 32 states and 67 transitions. Complement of second has 8 states. [2020-07-01 11:04:41,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-07-01 11:04:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:04:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2020-07-01 11:04:41,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 3 letters. Loop has 3 letters. [2020-07-01 11:04:41,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:41,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 6 letters. Loop has 3 letters. [2020-07-01 11:04:41,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:41,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 3 letters. Loop has 6 letters. [2020-07-01 11:04:41,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:41,045 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 67 transitions. [2020-07-01 11:04:41,047 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2020-07-01 11:04:41,048 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 24 states and 48 transitions. [2020-07-01 11:04:41,049 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-07-01 11:04:41,049 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-07-01 11:04:41,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 48 transitions. [2020-07-01 11:04:41,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:04:41,050 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 48 transitions. [2020-07-01 11:04:41,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 48 transitions. [2020-07-01 11:04:41,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-01 11:04:41,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-01 11:04:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 46 transitions. [2020-07-01 11:04:41,053 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 46 transitions. [2020-07-01 11:04:41,053 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 46 transitions. [2020-07-01 11:04:41,053 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 11:04:41,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 46 transitions. [2020-07-01 11:04:41,054 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2020-07-01 11:04:41,054 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:41,054 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:41,055 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:04:41,055 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2020-07-01 11:04:41,055 INFO L794 eck$LassoCheckResult]: Stem: 219#ULTIMATE.startENTRY [38] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|, ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_#t~nondet7, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post6, ULTIMATE.start_main_#t~post4, ULTIMATE.start_main_#t~post8, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~b~0] 220#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 231#L17 [39] L17-->L19: Formula: (and (= (+ v_ULTIMATE.start_main_~y~0_7 1) v_ULTIMATE.start_main_~y~0_6) (= 0 v_ULTIMATE.start_main_~b~0_4)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 227#L19 [2020-07-01 11:04:41,055 INFO L796 eck$LassoCheckResult]: Loop: 227#L19 [45] L19-->L23-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet5_5|) InVars {ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_5|} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5] 229#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 236#L17 [55] L17-->L23: Formula: (and (> 0 v_ULTIMATE.start_main_~b~0_6) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_9)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post6] 234#L23 [42] L23-->L23-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet7_5|) InVars {ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_5|} OutVars{ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet7] 224#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 235#L17 [39] L17-->L19: Formula: (and (= (+ v_ULTIMATE.start_main_~y~0_7 1) v_ULTIMATE.start_main_~y~0_6) (= 0 v_ULTIMATE.start_main_~b~0_4)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 227#L19 [2020-07-01 11:04:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:41,056 INFO L82 PathProgramCache]: Analyzing trace with hash 67495, now seen corresponding path program 3 times [2020-07-01 11:04:41,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:41,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669780235] [2020-07-01 11:04:41,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:41,069 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:41,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:41,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2083301490, now seen corresponding path program 1 times [2020-07-01 11:04:41,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:41,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012761230] [2020-07-01 11:04:41,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:41,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:41,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012761230] [2020-07-01 11:04:41,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:04:41,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 11:04:41,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309695582] [2020-07-01 11:04:41,085 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 11:04:41,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:04:41,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 11:04:41,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 11:04:41,099 INFO L87 Difference]: Start difference. First operand 22 states and 46 transitions. cyclomatic complexity: 26 Second operand 3 states. [2020-07-01 11:04:41,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:04:41,141 INFO L93 Difference]: Finished difference Result 28 states and 51 transitions. [2020-07-01 11:04:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 11:04:41,143 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 51 transitions. [2020-07-01 11:04:41,144 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2020-07-01 11:04:41,145 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 49 transitions. [2020-07-01 11:04:41,145 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-07-01 11:04:41,146 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-07-01 11:04:41,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 49 transitions. [2020-07-01 11:04:41,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:04:41,146 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 49 transitions. [2020-07-01 11:04:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 49 transitions. [2020-07-01 11:04:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-01 11:04:41,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-01 11:04:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 49 transitions. [2020-07-01 11:04:41,149 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 49 transitions. [2020-07-01 11:04:41,149 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 49 transitions. [2020-07-01 11:04:41,150 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 11:04:41,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 49 transitions. [2020-07-01 11:04:41,150 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2020-07-01 11:04:41,151 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:41,151 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:41,151 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:04:41,151 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2020-07-01 11:04:41,152 INFO L794 eck$LassoCheckResult]: Stem: 275#ULTIMATE.startENTRY [38] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|, ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_#t~nondet7, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post6, ULTIMATE.start_main_#t~post4, ULTIMATE.start_main_#t~post8, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~b~0] 276#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 291#L17 [39] L17-->L19: Formula: (and (= (+ v_ULTIMATE.start_main_~y~0_7 1) v_ULTIMATE.start_main_~y~0_6) (= 0 v_ULTIMATE.start_main_~b~0_4)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 286#L19 [2020-07-01 11:04:41,152 INFO L796 eck$LassoCheckResult]: Loop: 286#L19 [45] L19-->L23-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet5_5|) InVars {ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_5|} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5] 289#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 295#L17 [56] L17-->L23: Formula: (and (< 0 v_ULTIMATE.start_main_~b~0_6) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_9)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post6] 278#L23 [59] L23-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_7 0) (> 0 |v_ULTIMATE.start_main_#t~nondet7_3|) (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_6 1))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_3|} OutVars{ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_2|, ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_2|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post8, ULTIMATE.start_main_#t~nondet7, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 282#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 293#L17 [39] L17-->L19: Formula: (and (= (+ v_ULTIMATE.start_main_~y~0_7 1) v_ULTIMATE.start_main_~y~0_6) (= 0 v_ULTIMATE.start_main_~b~0_4)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 286#L19 [2020-07-01 11:04:41,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:41,152 INFO L82 PathProgramCache]: Analyzing trace with hash 67495, now seen corresponding path program 4 times [2020-07-01 11:04:41,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:41,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586974687] [2020-07-01 11:04:41,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:41,163 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:41,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:41,164 INFO L82 PathProgramCache]: Analyzing trace with hash -2083255362, now seen corresponding path program 1 times [2020-07-01 11:04:41,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:41,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115428990] [2020-07-01 11:04:41,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:41,183 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:41,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:41,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1476280036, now seen corresponding path program 1 times [2020-07-01 11:04:41,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:41,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019830413] [2020-07-01 11:04:41,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:41,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019830413] [2020-07-01 11:04:41,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:04:41,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 11:04:41,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193274114] [2020-07-01 11:04:41,281 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:41,281 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:41,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:41,282 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:41,282 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:04:41,282 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:41,282 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:41,282 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:41,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-07-01 11:04:41,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:41,283 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:41,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,368 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:41,368 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:41,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:41,371 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:41,407 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:04:41,407 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:41,445 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:04:41,447 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:41,447 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:41,447 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:41,447 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:41,447 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:04:41,447 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:41,447 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:41,448 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:41,448 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-07-01 11:04:41,448 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:41,448 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:41,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,532 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:41,533 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:41,535 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:41,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:41,537 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:41,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:41,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:41,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:41,539 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:41,539 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:41,541 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:04:41,545 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:04:41,545 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:41,548 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:04:41,549 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:04:41,549 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:04:41,549 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0) = 1*ULTIMATE.start_main_~b~0 Supporting invariants [] [2020-07-01 11:04:41,579 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:04:41,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:41,596 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:04:41,597 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:41,603 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:41,603 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:41,632 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:04:41,633 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:41,641 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:04:41,642 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:41,670 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 11:04:41,670 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 11:04:41,670 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 26 states and 49 transitions. cyclomatic complexity: 25 Second operand 5 states. [2020-07-01 11:04:41,743 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 26 states and 49 transitions. cyclomatic complexity: 25. Second operand 5 states. Result 155 states and 257 transitions. Complement of second has 36 states. [2020-07-01 11:04:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 11:04:41,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 11:04:41,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2020-07-01 11:04:41,745 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 6 letters. [2020-07-01 11:04:41,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:41,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 9 letters. Loop has 6 letters. [2020-07-01 11:04:41,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:41,747 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 12 letters. [2020-07-01 11:04:41,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:41,749 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 155 states and 257 transitions. [2020-07-01 11:04:41,753 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2020-07-01 11:04:41,754 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 155 states to 48 states and 83 transitions. [2020-07-01 11:04:41,755 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-07-01 11:04:41,755 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2020-07-01 11:04:41,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 83 transitions. [2020-07-01 11:04:41,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:04:41,755 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-07-01 11:04:41,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 83 transitions. [2020-07-01 11:04:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 29. [2020-07-01 11:04:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-01 11:04:41,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 54 transitions. [2020-07-01 11:04:41,759 INFO L711 BuchiCegarLoop]: Abstraction has 29 states and 54 transitions. [2020-07-01 11:04:41,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:04:41,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 11:04:41,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 11:04:41,760 INFO L87 Difference]: Start difference. First operand 29 states and 54 transitions. Second operand 3 states. [2020-07-01 11:04:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:04:41,776 INFO L93 Difference]: Finished difference Result 25 states and 41 transitions. [2020-07-01 11:04:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 11:04:41,778 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 41 transitions. [2020-07-01 11:04:41,779 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-07-01 11:04:41,779 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 21 states and 33 transitions. [2020-07-01 11:04:41,780 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-07-01 11:04:41,780 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-07-01 11:04:41,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 33 transitions. [2020-07-01 11:04:41,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:04:41,780 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 33 transitions. [2020-07-01 11:04:41,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 33 transitions. [2020-07-01 11:04:41,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-07-01 11:04:41,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-01 11:04:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 30 transitions. [2020-07-01 11:04:41,782 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 30 transitions. [2020-07-01 11:04:41,782 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 30 transitions. [2020-07-01 11:04:41,783 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 11:04:41,783 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 30 transitions. [2020-07-01 11:04:41,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-07-01 11:04:41,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:41,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:41,784 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 11:04:41,784 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2020-07-01 11:04:41,784 INFO L794 eck$LassoCheckResult]: Stem: 625#ULTIMATE.startENTRY [38] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|, ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_#t~nondet7, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post6, ULTIMATE.start_main_#t~post4, ULTIMATE.start_main_#t~post8, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~b~0] 626#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 622#L17 [2020-07-01 11:04:41,784 INFO L796 eck$LassoCheckResult]: Loop: 622#L17 [39] L17-->L19: Formula: (and (= (+ v_ULTIMATE.start_main_~y~0_7 1) v_ULTIMATE.start_main_~y~0_6) (= 0 v_ULTIMATE.start_main_~b~0_4)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 631#L19 [57] L19-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_5 1) (> 0 |v_ULTIMATE.start_main_#t~nondet5_3|)) InVars {ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_3|} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_2|, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_~b~0] 630#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 627#L17 [56] L17-->L23: Formula: (and (< 0 v_ULTIMATE.start_main_~b~0_6) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_9)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post6] 628#L23 [59] L23-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_7 0) (> 0 |v_ULTIMATE.start_main_#t~nondet7_3|) (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_6 1))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_3|} OutVars{ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_2|, ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_2|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post8, ULTIMATE.start_main_#t~nondet7, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 621#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 622#L17 [2020-07-01 11:04:41,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:41,785 INFO L82 PathProgramCache]: Analyzing trace with hash 2176, now seen corresponding path program 1 times [2020-07-01 11:04:41,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:41,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230768450] [2020-07-01 11:04:41,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:41,792 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:41,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:41,793 INFO L82 PathProgramCache]: Analyzing trace with hash 2057839216, now seen corresponding path program 1 times [2020-07-01 11:04:41,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:41,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809571795] [2020-07-01 11:04:41,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:41,805 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:41,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:41,806 INFO L82 PathProgramCache]: Analyzing trace with hash -356937809, now seen corresponding path program 1 times [2020-07-01 11:04:41,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:41,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012099864] [2020-07-01 11:04:41,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:41,821 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:41,886 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:41,887 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:41,887 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:41,887 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:41,887 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:04:41,887 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:41,887 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:41,887 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:41,887 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 11:04:41,888 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:41,888 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:41,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:41,973 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:41,973 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:41,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:41,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:41,981 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:41,981 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4=0} Honda state: {ULTIMATE.start_main_#t~post4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:42,013 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:42,014 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:42,018 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:42,018 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet7=-1} Honda state: {ULTIMATE.start_main_#t~nondet7=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:42,051 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:42,051 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:42,056 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:42,056 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~n~0=1, ULTIMATE.start_main_~y~0=0} Honda state: {ULTIMATE.start_main_~n~0=1, ULTIMATE.start_main_~y~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:42,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:42,091 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:42,095 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:42,095 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:42,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:42,128 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:42,133 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:42,133 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=-1} Honda state: {ULTIMATE.start_main_#t~nondet5=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:42,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:42,167 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:42,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:04:42,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:42,287 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:04:42,289 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:42,289 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:42,289 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:42,289 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:42,289 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:04:42,289 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:42,289 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:42,289 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:42,290 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 11:04:42,290 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:42,290 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:42,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,385 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:42,385 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:42,388 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:42,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:42,390 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:42,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:42,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:42,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:42,392 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:42,392 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:42,395 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:42,430 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:42,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:42,432 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:42,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:42,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:42,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:42,433 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:42,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:42,435 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:42,470 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:42,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:42,472 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:42,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:42,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:42,473 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:42,473 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:42,473 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:42,475 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:42,508 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:42,510 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:42,511 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:42,511 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:42,511 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:42,511 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:42,512 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:42,512 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:42,515 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:42,547 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:42,549 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:42,549 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:42,549 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:42,549 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:42,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:42,550 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:42,550 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:42,552 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:42,584 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:42,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:42,586 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:42,586 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:42,586 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:42,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:42,587 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:42,587 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:42,590 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:04:42,594 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:04:42,594 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:42,597 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:04:42,597 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:04:42,597 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:04:42,598 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 11:04:42,627 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:04:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:42,645 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:04:42,645 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:42,651 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:42,651 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-01 11:04:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:42,665 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:42,666 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:42,687 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:42,688 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:42,714 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 11:04:42,715 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 11:04:42,715 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 18 states and 30 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-07-01 11:04:42,749 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 18 states and 30 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 35 states and 58 transitions. Complement of second has 8 states. [2020-07-01 11:04:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 2 accepting loop states [2020-07-01 11:04:42,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:04:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2020-07-01 11:04:42,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 2 letters. Loop has 6 letters. [2020-07-01 11:04:42,750 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:42,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 8 letters. Loop has 6 letters. [2020-07-01 11:04:42,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:42,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 2 letters. Loop has 12 letters. [2020-07-01 11:04:42,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:42,753 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 58 transitions. [2020-07-01 11:04:42,754 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:04:42,754 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 29 states and 50 transitions. [2020-07-01 11:04:42,755 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-01 11:04:42,755 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-07-01 11:04:42,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 50 transitions. [2020-07-01 11:04:42,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:04:42,755 INFO L688 BuchiCegarLoop]: Abstraction has 29 states and 50 transitions. [2020-07-01 11:04:42,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 50 transitions. [2020-07-01 11:04:42,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-07-01 11:04:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-01 11:04:42,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 43 transitions. [2020-07-01 11:04:42,758 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 43 transitions. [2020-07-01 11:04:42,758 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 43 transitions. [2020-07-01 11:04:42,758 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2020-07-01 11:04:42,758 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 43 transitions. [2020-07-01 11:04:42,759 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:04:42,759 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:42,759 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:42,759 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:04:42,759 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:04:42,760 INFO L794 eck$LassoCheckResult]: Stem: 762#ULTIMATE.startENTRY [38] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|, ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_#t~nondet7, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post6, ULTIMATE.start_main_#t~post4, ULTIMATE.start_main_#t~post8, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~b~0] 763#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 764#L17 [39] L17-->L19: Formula: (and (= (+ v_ULTIMATE.start_main_~y~0_7 1) v_ULTIMATE.start_main_~y~0_6) (= 0 v_ULTIMATE.start_main_~b~0_4)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 766#L19 [58] L19-->L23-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet5_3|) (= v_ULTIMATE.start_main_~b~0_5 1)) InVars {ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_3|} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_2|, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_~b~0] 758#L23-2 [2020-07-01 11:04:42,760 INFO L796 eck$LassoCheckResult]: Loop: 758#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 759#L17 [56] L17-->L23: Formula: (and (< 0 v_ULTIMATE.start_main_~b~0_6) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_9)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post6] 768#L23 [42] L23-->L23-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet7_5|) InVars {ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_5|} OutVars{ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet7] 758#L23-2 [2020-07-01 11:04:42,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:42,760 INFO L82 PathProgramCache]: Analyzing trace with hash 2092403, now seen corresponding path program 1 times [2020-07-01 11:04:42,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:42,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571485636] [2020-07-01 11:04:42,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:42,771 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:42,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:42,771 INFO L82 PathProgramCache]: Analyzing trace with hash 67126, now seen corresponding path program 1 times [2020-07-01 11:04:42,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:42,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363757817] [2020-07-01 11:04:42,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:42,777 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:42,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:42,778 INFO L82 PathProgramCache]: Analyzing trace with hash -2089694332, now seen corresponding path program 1 times [2020-07-01 11:04:42,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:42,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926149526] [2020-07-01 11:04:42,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:42,789 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:42,809 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:42,809 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:42,810 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:42,810 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:42,810 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:04:42,810 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:42,810 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:42,810 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:42,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration7_Loop [2020-07-01 11:04:42,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:42,810 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:42,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,866 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:42,866 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:42,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:42,872 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:42,907 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:04:42,907 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:42,944 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:04:42,946 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:42,946 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:42,946 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:42,946 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:42,946 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:04:42,946 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:42,946 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:42,947 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:42,947 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration7_Loop [2020-07-01 11:04:42,947 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:42,947 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:42,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:42,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:43,001 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:43,001 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:43,003 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:43,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:43,005 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:43,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:43,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:43,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:43,007 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:43,007 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:43,010 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:04:43,013 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:04:43,013 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:43,015 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:04:43,015 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:04:43,015 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:04:43,016 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-07-01 11:04:43,045 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:04:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:43,063 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:04:43,063 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:43,067 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:43,068 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:43,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:43,141 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:43,141 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:43,147 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 11:04:43,148 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 11:04:43,148 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 26 states and 43 transitions. cyclomatic complexity: 22 Second operand 4 states. [2020-07-01 11:04:43,257 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 26 states and 43 transitions. cyclomatic complexity: 22. Second operand 4 states. Result 116 states and 169 transitions. Complement of second has 22 states. [2020-07-01 11:04:43,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 11:04:43,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:04:43,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2020-07-01 11:04:43,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 11:04:43,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:43,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 7 letters. Loop has 3 letters. [2020-07-01 11:04:43,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:43,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 4 letters. Loop has 6 letters. [2020-07-01 11:04:43,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:43,260 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 169 transitions. [2020-07-01 11:04:43,262 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-07-01 11:04:43,263 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 57 states and 85 transitions. [2020-07-01 11:04:43,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-07-01 11:04:43,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-07-01 11:04:43,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 85 transitions. [2020-07-01 11:04:43,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:04:43,265 INFO L688 BuchiCegarLoop]: Abstraction has 57 states and 85 transitions. [2020-07-01 11:04:43,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 85 transitions. [2020-07-01 11:04:43,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 26. [2020-07-01 11:04:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-01 11:04:43,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 41 transitions. [2020-07-01 11:04:43,267 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 41 transitions. [2020-07-01 11:04:43,267 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 41 transitions. [2020-07-01 11:04:43,267 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2020-07-01 11:04:43,268 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 41 transitions. [2020-07-01 11:04:43,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:04:43,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:04:43,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:04:43,269 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:04:43,269 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:04:43,269 INFO L794 eck$LassoCheckResult]: Stem: 978#ULTIMATE.startENTRY [38] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|, ULTIMATE.start_main_#t~post8=|v_ULTIMATE.start_main_#t~post8_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_#t~nondet7, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post6, ULTIMATE.start_main_#t~post4, ULTIMATE.start_main_#t~post8, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~b~0] 973#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 975#L17 [39] L17-->L19: Formula: (and (= (+ v_ULTIMATE.start_main_~y~0_7 1) v_ULTIMATE.start_main_~y~0_6) (= 0 v_ULTIMATE.start_main_~b~0_4)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_4, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 980#L19 [57] L19-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_5 1) (> 0 |v_ULTIMATE.start_main_#t~nondet5_3|)) InVars {ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_3|} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_2|, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_~b~0] 984#L23-2 [2020-07-01 11:04:43,269 INFO L796 eck$LassoCheckResult]: Loop: 984#L23-2 [37] L23-2-->L17: Formula: (and (<= v_ULTIMATE.start_main_~y~0_5 v_ULTIMATE.start_main_~n~0_5) (<= 0 v_ULTIMATE.start_main_~x~0_5) (<= 0 v_ULTIMATE.start_main_~y~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 990#L17 [56] L17-->L23: Formula: (and (< 0 v_ULTIMATE.start_main_~b~0_6) (= (+ v_ULTIMATE.start_main_~y~0_8 1) v_ULTIMATE.start_main_~y~0_9)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_#t~post6=|v_ULTIMATE.start_main_#t~post6_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post6] 983#L23 [42] L23-->L23-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet7_5|) InVars {ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_5|} OutVars{ULTIMATE.start_main_#t~nondet7=|v_ULTIMATE.start_main_#t~nondet7_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet7] 984#L23-2 [2020-07-01 11:04:43,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:43,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2092402, now seen corresponding path program 1 times [2020-07-01 11:04:43,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:43,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869751498] [2020-07-01 11:04:43,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:43,279 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:43,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:43,280 INFO L82 PathProgramCache]: Analyzing trace with hash 67126, now seen corresponding path program 2 times [2020-07-01 11:04:43,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:43,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175696602] [2020-07-01 11:04:43,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:43,286 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:43,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:43,287 INFO L82 PathProgramCache]: Analyzing trace with hash -2089724123, now seen corresponding path program 1 times [2020-07-01 11:04:43,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:04:43,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48050267] [2020-07-01 11:04:43,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:04:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:04:43,298 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:04:43,322 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:43,322 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:43,322 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:43,322 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:43,323 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:04:43,323 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:43,323 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:43,323 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:43,323 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration8_Loop [2020-07-01 11:04:43,323 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:43,323 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:43,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:43,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:43,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:43,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:43,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:43,407 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:43,407 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:43,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:43,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:43,416 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:04:43,416 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet7=0} Honda state: {ULTIMATE.start_main_#t~nondet7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:43,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:04:43,447 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:04:43,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:04:43,482 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:04:43,518 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:04:43,520 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:04:43,520 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:04:43,520 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:04:43,520 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:04:43,520 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:04:43,520 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:43,521 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:04:43,521 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:04:43,521 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration8_Loop [2020-07-01 11:04:43,521 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:04:43,521 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:04:43,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:43,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:43,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:43,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:43,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:04:43,569 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:04:43,569 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:43,572 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:43,574 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:43,574 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:43,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:43,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:43,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:43,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:43,575 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:43,577 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:43,609 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:04:43,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:04:43,611 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:04:43,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:04:43,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:04:43,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:04:43,612 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:04:43,612 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:04:43,615 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:04:43,618 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:04:43,618 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:04:43,621 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:04:43,621 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:04:43,621 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:04:43,621 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-07-01 11:04:43,651 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:04:43,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:04:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:43,667 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:04:43,668 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:43,672 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:43,672 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:04:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:04:43,724 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:04:43,725 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:04:43,729 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 11:04:43,729 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 11:04:43,729 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 26 states and 41 transitions. cyclomatic complexity: 20 Second operand 4 states. [2020-07-01 11:04:43,805 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 26 states and 41 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 105 states and 152 transitions. Complement of second has 22 states. [2020-07-01 11:04:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 11:04:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:04:43,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2020-07-01 11:04:43,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 11:04:43,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:43,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 7 letters. Loop has 3 letters. [2020-07-01 11:04:43,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:43,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 4 letters. Loop has 6 letters. [2020-07-01 11:04:43,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:04:43,809 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 152 transitions. [2020-07-01 11:04:43,810 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:04:43,810 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 0 states and 0 transitions. [2020-07-01 11:04:43,810 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:04:43,811 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:04:43,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:04:43,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:04:43,811 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:04:43,811 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:04:43,811 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:04:43,811 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2020-07-01 11:04:43,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:04:43,812 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:04:43,812 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:04:43,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:04:43 BasicIcfg [2020-07-01 11:04:43,818 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:04:43,820 INFO L168 Benchmark]: Toolchain (without parser) took 5778.29 ms. Allocated memory was 649.6 MB in the beginning and 763.9 MB in the end (delta: 114.3 MB). Free memory was 562.7 MB in the beginning and 645.9 MB in the end (delta: -83.2 MB). Peak memory consumption was 31.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:43,821 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.2 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:04:43,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.80 ms. Allocated memory was 649.6 MB in the beginning and 660.1 MB in the end (delta: 10.5 MB). Free memory was 562.7 MB in the beginning and 622.9 MB in the end (delta: -60.2 MB). Peak memory consumption was 28.0 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:43,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.22 ms. Allocated memory is still 660.1 MB. Free memory was 622.9 MB in the beginning and 621.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:43,822 INFO L168 Benchmark]: Boogie Preprocessor took 20.62 ms. Allocated memory is still 660.1 MB. Free memory was 621.8 MB in the beginning and 620.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:43,822 INFO L168 Benchmark]: RCFGBuilder took 262.49 ms. Allocated memory is still 660.1 MB. Free memory was 619.6 MB in the beginning and 605.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:43,823 INFO L168 Benchmark]: BlockEncodingV2 took 79.87 ms. Allocated memory is still 660.1 MB. Free memory was 605.0 MB in the beginning and 599.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:43,823 INFO L168 Benchmark]: TraceAbstraction took 155.60 ms. Allocated memory is still 660.1 MB. Free memory was 598.6 MB in the beginning and 589.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:43,824 INFO L168 Benchmark]: BuchiAutomizer took 4928.51 ms. Allocated memory was 660.1 MB in the beginning and 763.9 MB in the end (delta: 103.8 MB). Free memory was 589.9 MB in the beginning and 645.9 MB in the end (delta: -55.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 50.3 GB. [2020-07-01 11:04:43,827 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 9 locations, 13 edges - StatisticsResult: Encoded RCFG 5 locations, 11 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.2 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 289.80 ms. Allocated memory was 649.6 MB in the beginning and 660.1 MB in the end (delta: 10.5 MB). Free memory was 562.7 MB in the beginning and 622.9 MB in the end (delta: -60.2 MB). Peak memory consumption was 28.0 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.22 ms. Allocated memory is still 660.1 MB. Free memory was 622.9 MB in the beginning and 621.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.62 ms. Allocated memory is still 660.1 MB. Free memory was 621.8 MB in the beginning and 620.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 262.49 ms. Allocated memory is still 660.1 MB. Free memory was 619.6 MB in the beginning and 605.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 79.87 ms. Allocated memory is still 660.1 MB. Free memory was 605.0 MB in the beginning and 599.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 155.60 ms. Allocated memory is still 660.1 MB. Free memory was 598.6 MB in the beginning and 589.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4928.51 ms. Allocated memory was 660.1 MB in the beginning and 763.9 MB in the end (delta: 103.8 MB). Free memory was 589.9 MB in the beginning and 645.9 MB in the end (delta: -55.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 9 terminating modules (3 trivial, 0 deterministic, 6 nondeterministic). One nondeterministic module has affine ranking function 2 * y + 1 and consists of 6 locations. One nondeterministic module has affine ranking function 2 * n + -2 * y + 1 and consists of 5 locations. One nondeterministic module has affine ranking function b and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 6 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 6 locations. 3 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.8s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 3.4s. Construction of modules took 0.3s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 8. Automata minimization 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 60 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 26 states and ocurred in iteration 4. Nontrivial modules had stage [6, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 4/4 HoareTripleCheckerStatistics: 66 SDtfs, 155 SDslu, 142 SDs, 0 SdLazy, 285 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital25 mio100 ax100 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 32ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:04:34.781 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp/BenchExec_run_ld2olh/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:04:44.260 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check