/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- NO Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 10:46:06,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:46:06,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:46:06,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:46:06,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:46:06,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:46:06,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:46:06,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:46:06,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:46:06,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:46:06,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:46:06,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:46:06,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:46:06,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:46:06,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:46:06,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:46:06,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:46:06,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:46:06,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:46:06,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:46:06,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:46:06,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:46:06,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:46:06,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:46:06,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:46:06,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:46:06,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:46:06,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:46:06,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:46:06,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:46:06,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:46:06,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:46:06,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:46:06,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:46:06,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:46:06,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:46:06,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:46:06,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:46:06,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:46:06,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:46:06,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:46:06,758 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 10:46:06,772 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:46:06,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:46:06,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:46:06,774 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:46:06,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:46:06,774 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:46:06,774 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:46:06,774 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:46:06,774 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:46:06,775 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:46:06,775 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:46:06,775 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:46:06,775 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:46:06,775 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:46:06,775 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:06,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:46:06,776 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:46:06,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:46:06,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:46:06,776 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:46:06,777 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:46:06,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:46:06,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:46:06,777 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:46:06,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:46:06,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:46:06,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:46:06,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:46:06,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:46:06,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:46:06,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:46:06,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:46:06,960 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:46:06,961 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:46:06,961 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:46:07,031 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_3VyV4J/tmp/4011f3595707426da284d3f89d51f8f7/FLAGb89b5c1f9 [2020-07-01 10:46:07,358 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:46:07,359 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:46:07,365 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_3VyV4J/tmp/4011f3595707426da284d3f89d51f8f7/FLAGb89b5c1f9 [2020-07-01 10:46:07,781 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_3VyV4J/tmp/4011f3595707426da284d3f89d51f8f7 [2020-07-01 10:46:07,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:46:07,794 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:46:07,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:46:07,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:46:07,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:46:07,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:46:07" (1/1) ... [2020-07-01 10:46:07,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65230ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:46:07, skipping insertion in model container [2020-07-01 10:46:07,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:46:07" (1/1) ... [2020-07-01 10:46:07,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:46:07,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:46:08,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:46:08,058 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:46:08,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:46:08,089 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:46:08,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:46:08 WrapperNode [2020-07-01 10:46:08,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:46:08,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:46:08,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:46:08,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:46:08,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:46:08" (1/1) ... [2020-07-01 10:46:08,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:46:08" (1/1) ... [2020-07-01 10:46:08,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:46:08,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:46:08,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:46:08,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:46:08,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:46:08" (1/1) ... [2020-07-01 10:46:08,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:46:08" (1/1) ... [2020-07-01 10:46:08,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:46:08" (1/1) ... [2020-07-01 10:46:08,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:46:08" (1/1) ... [2020-07-01 10:46:08,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:46:08" (1/1) ... [2020-07-01 10:46:08,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:46:08" (1/1) ... [2020-07-01 10:46:08,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:46:08" (1/1) ... [2020-07-01 10:46:08,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:46:08,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:46:08,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:46:08,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:46:08,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:46:08" (1/1) ... No working directory specified, using /export/starexec/sandbox2/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 10:46:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:46:08,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:46:08,386 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:46:08,386 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:46:08,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:46:08 BoogieIcfgContainer [2020-07-01 10:46:08,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:46:08,390 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:46:08,391 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:46:08,393 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:46:08,393 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:46:08" (1/1) ... [2020-07-01 10:46:08,405 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-07-01 10:46:08,407 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:46:08,408 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:46:08,408 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:46:08,408 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:46:08,410 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:46:08,411 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:46:08,411 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:46:08,425 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:46:08,439 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 10:46:08,443 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:46:08,445 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:46:08,456 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 10:46:08,458 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 10:46:08,459 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:46:08,459 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:46:08,459 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:46:08,460 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:46:08,460 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 7 edges [2020-07-01 10:46:08,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:46:08 BasicIcfg [2020-07-01 10:46:08,461 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:46:08,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:46:08,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:46:08,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:46:08,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:46:07" (1/4) ... [2020-07-01 10:46:08,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35149f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:46:08, skipping insertion in model container [2020-07-01 10:46:08,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:46:08" (2/4) ... [2020-07-01 10:46:08,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35149f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:46:08, skipping insertion in model container [2020-07-01 10:46:08,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:46:08" (3/4) ... [2020-07-01 10:46:08,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35149f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:46:08, skipping insertion in model container [2020-07-01 10:46:08,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:46:08" (4/4) ... [2020-07-01 10:46:08,470 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:46:08,480 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:46:08,487 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 10:46:08,500 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 10:46:08,523 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:46:08,523 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:46:08,524 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:46:08,524 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:46:08,524 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:46:08,524 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:46:08,524 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:46:08,525 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:46:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-07-01 10:46:08,544 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:46:08,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-07-01 10:46:08,598 INFO L268 CegarLoopResult]: For program point L16(lines 16 21) no Hoare annotation was computed. [2020-07-01 10:46:08,598 INFO L271 CegarLoopResult]: At program point L16-2(lines 11 23) the Hoare annotation is: true [2020-07-01 10:46:08,598 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:46:08,598 INFO L268 CegarLoopResult]: For program point L12(lines 12 22) no Hoare annotation was computed. [2020-07-01 10:46:08,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:46:08 BasicIcfg [2020-07-01 10:46:08,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:46:08,608 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:46:08,608 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:46:08,611 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:46:08,612 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:46:08,612 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:46:07" (1/5) ... [2020-07-01 10:46:08,612 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bd18f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:46:08, skipping insertion in model container [2020-07-01 10:46:08,613 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:46:08,613 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:46:08" (2/5) ... [2020-07-01 10:46:08,613 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bd18f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:46:08, skipping insertion in model container [2020-07-01 10:46:08,614 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:46:08,614 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:46:08" (3/5) ... [2020-07-01 10:46:08,614 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bd18f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:46:08, skipping insertion in model container [2020-07-01 10:46:08,614 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:46:08,614 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:46:08" (4/5) ... [2020-07-01 10:46:08,615 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bd18f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:46:08, skipping insertion in model container [2020-07-01 10:46:08,615 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:46:08,615 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:46:08" (5/5) ... [2020-07-01 10:46:08,616 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:46:08,645 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:46:08,645 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:46:08,645 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:46:08,645 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:46:08,646 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:46:08,646 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:46:08,646 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:46:08,646 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:46:08,649 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 10:46:08,667 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:46:08,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:46:08,668 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:46:08,674 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:46:08,675 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 10:46:08,675 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:46:08,675 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 10:46:08,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:46:08,676 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:46:08,676 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:46:08,676 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:46:08,676 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 10:46:08,681 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [29] ULTIMATE.startENTRY-->L16-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~w~0_1 5)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~w~0] 6#L16-2true [2020-07-01 10:46:08,681 INFO L796 eck$LassoCheckResult]: Loop: 6#L16-2true [43] L16-2-->L12: Formula: (> 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 5#L12true [32] L12-->L16-2: Formula: (and (< (+ v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~w~0_8) 0) (= 1 (+ v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~i~0_13))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 6#L16-2true [2020-07-01 10:46:08,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:08,688 INFO L82 PathProgramCache]: Analyzing trace with hash 60, now seen corresponding path program 1 times [2020-07-01 10:46:08,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:08,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55276160] [2020-07-01 10:46:08,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:08,770 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:08,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:08,772 INFO L82 PathProgramCache]: Analyzing trace with hash 2326, now seen corresponding path program 1 times [2020-07-01 10:46:08,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:08,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148949135] [2020-07-01 10:46:08,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:08,787 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:08,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:08,789 INFO L82 PathProgramCache]: Analyzing trace with hash 59025, now seen corresponding path program 1 times [2020-07-01 10:46:08,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:08,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893510210] [2020-07-01 10:46:08,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:08,802 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:08,842 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:46:08,843 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:46:08,843 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:46:08,844 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:46:08,844 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:46:08,844 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:08,844 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:46:08,844 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:46:08,844 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:46:08,845 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:46:08,845 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:46:08,865 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 10:46:08,875 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 10:46:08,881 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 10:46:08,965 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:46:08,965 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/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 10:46:08,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:08,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:08,983 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:46:08,983 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 10:46:09,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:09,019 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:09,023 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:46:09,024 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:09,058 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:09,058 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:09,098 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:46:09,099 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:09,139 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:46:09,141 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:46:09,141 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:46:09,141 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:46:09,141 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:46:09,141 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:46:09,142 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:09,142 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:46:09,142 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:46:09,142 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:46:09,142 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:46:09,142 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:46:09,144 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 10:46:09,149 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 10:46:09,152 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 10:46:09,225 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:46:09,231 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:09,239 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 10:46:09,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:46:09,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:46:09,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:46:09,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:46:09,249 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:46:09,249 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:46:09,257 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:09,292 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 10:46:09,294 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:46:09,295 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:46:09,295 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:46:09,295 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:46:09,299 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:46:09,299 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:46:09,305 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:09,339 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 10:46:09,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:46:09,341 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:46:09,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:46:09,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:46:09,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:46:09,343 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:46:09,344 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:46:09,347 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:46:09,353 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:46:09,353 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:09,359 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:46:09,359 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:46:09,360 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:46:09,360 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 10:46:09,394 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:46:09,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:09,439 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:46:09,440 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:46:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:09,449 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:46:09,450 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:46:09,462 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 10:46:09,494 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 10:46:09,499 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 2 loop predicates [2020-07-01 10:46:09,500 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 3 states. [2020-07-01 10:46:09,571 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 3 states. Result 14 states and 25 transitions. Complement of second has 6 states. [2020-07-01 10:46:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 10:46:09,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 10:46:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-07-01 10:46:09,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 10:46:09,577 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:09,577 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 10:46:09,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:09,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 10:46:09,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:09,584 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 25 transitions. [2020-07-01 10:46:09,586 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:46:09,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 19 transitions. [2020-07-01 10:46:09,591 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 10:46:09,591 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 10:46:09,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 19 transitions. [2020-07-01 10:46:09,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:46:09,592 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 19 transitions. [2020-07-01 10:46:09,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 19 transitions. [2020-07-01 10:46:09,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8. [2020-07-01 10:46:09,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 10:46:09,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2020-07-01 10:46:09,621 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2020-07-01 10:46:09,621 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2020-07-01 10:46:09,622 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 10:46:09,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 15 transitions. [2020-07-01 10:46:09,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:46:09,622 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:46:09,622 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:46:09,623 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:46:09,623 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 10:46:09,623 INFO L794 eck$LassoCheckResult]: Stem: 58#ULTIMATE.startENTRY [29] ULTIMATE.startENTRY-->L16-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~w~0_1 5)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~w~0] 59#L16-2 [44] L16-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 60#L12 [2020-07-01 10:46:09,624 INFO L796 eck$LassoCheckResult]: Loop: 60#L12 [32] L12-->L16-2: Formula: (and (< (+ v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~w~0_8) 0) (= 1 (+ v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~i~0_13))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 55#L16-2 [43] L16-2-->L12: Formula: (> 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 60#L12 [2020-07-01 10:46:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:09,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1904, now seen corresponding path program 1 times [2020-07-01 10:46:09,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:09,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980907430] [2020-07-01 10:46:09,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:09,632 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:09,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:09,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1996, now seen corresponding path program 2 times [2020-07-01 10:46:09,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:09,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222933265] [2020-07-01 10:46:09,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:09,640 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:09,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:09,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1830779, now seen corresponding path program 1 times [2020-07-01 10:46:09,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:09,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182662187] [2020-07-01 10:46:09,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:46:09,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182662187] [2020-07-01 10:46:09,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:46:09,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 10:46:09,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878561729] [2020-07-01 10:46:09,704 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:46:09,704 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:46:09,704 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:46:09,704 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:46:09,704 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:46:09,704 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:09,705 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:46:09,705 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:46:09,705 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:46:09,705 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:46:09,705 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:46:09,707 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 10:46:09,711 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 10:46:09,714 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 10:46:09,808 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:46:09,808 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/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 10:46:09,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:09,813 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:09,818 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:46:09,818 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 10:46:09,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:09,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:09,868 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:46:09,868 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:09,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:09,905 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:09,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:46:09,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:10,086 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:46:10,088 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:46:10,088 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:46:10,089 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:46:10,089 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:46:10,089 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:46:10,089 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:46:10,089 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:46:10,089 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:46:10,089 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:46:10,089 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:46:10,090 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:46:10,091 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 10:46:10,095 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 10:46:10,100 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 10:46:10,164 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:46:10,164 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/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 10:46:10,172 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 10:46:10,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:46:10,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:46:10,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:46:10,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:46:10,178 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:46:10,179 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:46:10,183 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/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 10:46:10,218 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 10:46:10,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:46:10,221 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:46:10,221 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:46:10,221 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:46:10,224 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:46:10,225 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:46:10,229 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/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 10:46:10,265 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 10:46:10,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:46:10,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:46:10,267 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:46:10,267 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:46:10,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:46:10,269 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:46:10,269 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:46:10,273 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:46:10,278 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:46:10,278 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/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 10:46:10,282 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:46:10,282 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:46:10,283 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:46:10,283 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 10:46:10,314 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:46:10,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:10,340 INFO L264 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:46:10,340 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:46:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:10,345 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:46:10,346 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:46:10,373 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 10:46:10,373 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 10:46:10,374 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 2 loop predicates [2020-07-01 10:46:10,374 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 8 states and 15 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-07-01 10:46:10,481 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 8 states and 15 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 72 states and 118 transitions. Complement of second has 40 states. [2020-07-01 10:46:10,481 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 10:46:10,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 10:46:10,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2020-07-01 10:46:10,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 10:46:10,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:10,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 10:46:10,484 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:10,484 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 10:46:10,484 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:46:10,485 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 118 transitions. [2020-07-01 10:46:10,490 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 41 [2020-07-01 10:46:10,492 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 51 states and 90 transitions. [2020-07-01 10:46:10,492 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-07-01 10:46:10,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2020-07-01 10:46:10,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 90 transitions. [2020-07-01 10:46:10,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:46:10,493 INFO L688 BuchiCegarLoop]: Abstraction has 51 states and 90 transitions. [2020-07-01 10:46:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 90 transitions. [2020-07-01 10:46:10,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30. [2020-07-01 10:46:10,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-01 10:46:10,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 59 transitions. [2020-07-01 10:46:10,497 INFO L711 BuchiCegarLoop]: Abstraction has 30 states and 59 transitions. [2020-07-01 10:46:10,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:46:10,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 10:46:10,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-01 10:46:10,502 INFO L87 Difference]: Start difference. First operand 30 states and 59 transitions. Second operand 4 states. [2020-07-01 10:46:10,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:46:10,536 INFO L93 Difference]: Finished difference Result 15 states and 26 transitions. [2020-07-01 10:46:10,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 10:46:10,538 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 26 transitions. [2020-07-01 10:46:10,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 10:46:10,540 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 26 transitions. [2020-07-01 10:46:10,540 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-07-01 10:46:10,540 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-07-01 10:46:10,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 26 transitions. [2020-07-01 10:46:10,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:46:10,540 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 26 transitions. [2020-07-01 10:46:10,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 26 transitions. [2020-07-01 10:46:10,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2020-07-01 10:46:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-01 10:46:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 21 transitions. [2020-07-01 10:46:10,542 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 21 transitions. [2020-07-01 10:46:10,543 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 21 transitions. [2020-07-01 10:46:10,543 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 10:46:10,543 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 21 transitions. [2020-07-01 10:46:10,543 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 10:46:10,543 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:46:10,544 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:46:10,544 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:46:10,544 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:46:10,544 INFO L794 eck$LassoCheckResult]: Stem: 254#ULTIMATE.startENTRY [29] ULTIMATE.startENTRY-->L16-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~w~0_1 5)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~w~0] 255#L16-2 [44] L16-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 260#L12 [2020-07-01 10:46:10,545 INFO L796 eck$LassoCheckResult]: Loop: 260#L12 [41] L12-->L16: Formula: (>= (+ v_ULTIMATE.start_main_~i~0_16 v_ULTIMATE.start_main_~w~0_9) 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} AuxVars[] AssignedVars[] 256#L16 [42] L16-->L16-2: Formula: (and (>= v_ULTIMATE.start_main_~w~0_7 v_ULTIMATE.start_main_~i~0_10) (= v_ULTIMATE.start_main_~i~0_9 0)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 257#L16-2 [44] L16-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 260#L12 [2020-07-01 10:46:10,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:10,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1904, now seen corresponding path program 2 times [2020-07-01 10:46:10,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:10,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313486897] [2020-07-01 10:46:10,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:10,551 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:10,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:10,552 INFO L82 PathProgramCache]: Analyzing trace with hash 70538, now seen corresponding path program 1 times [2020-07-01 10:46:10,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:10,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908940870] [2020-07-01 10:46:10,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:10,565 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 10:46:10,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908940870] [2020-07-01 10:46:10,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:46:10,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:46:10,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794972305] [2020-07-01 10:46:10,566 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 10:46:10,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:46:10,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:46:10,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:46:10,567 INFO L87 Difference]: Start difference. First operand 12 states and 21 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-07-01 10:46:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:46:10,585 INFO L93 Difference]: Finished difference Result 16 states and 26 transitions. [2020-07-01 10:46:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:46:10,587 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 26 transitions. [2020-07-01 10:46:10,588 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-07-01 10:46:10,588 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 26 transitions. [2020-07-01 10:46:10,589 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-07-01 10:46:10,589 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-07-01 10:46:10,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 26 transitions. [2020-07-01 10:46:10,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:46:10,589 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 26 transitions. [2020-07-01 10:46:10,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 26 transitions. [2020-07-01 10:46:10,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2020-07-01 10:46:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-01 10:46:10,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 23 transitions. [2020-07-01 10:46:10,592 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 23 transitions. [2020-07-01 10:46:10,592 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 23 transitions. [2020-07-01 10:46:10,592 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 10:46:10,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 23 transitions. [2020-07-01 10:46:10,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-01 10:46:10,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:46:10,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:46:10,593 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:46:10,593 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:46:10,593 INFO L794 eck$LassoCheckResult]: Stem: 288#ULTIMATE.startENTRY [29] ULTIMATE.startENTRY-->L16-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~w~0_1 5)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~w~0] 289#L16-2 [44] L16-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 296#L12 [2020-07-01 10:46:10,594 INFO L796 eck$LassoCheckResult]: Loop: 296#L12 [41] L12-->L16: Formula: (>= (+ v_ULTIMATE.start_main_~i~0_16 v_ULTIMATE.start_main_~w~0_9) 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} AuxVars[] AssignedVars[] 290#L16 [30] L16-->L16-2: Formula: (and (= 0 (+ v_ULTIMATE.start_main_~i~0_6 v_ULTIMATE.start_main_~i~0_8 1)) (< v_ULTIMATE.start_main_~w~0_6 v_ULTIMATE.start_main_~i~0_8)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_6} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 292#L16-2 [44] L16-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 296#L12 [2020-07-01 10:46:10,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:10,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1904, now seen corresponding path program 3 times [2020-07-01 10:46:10,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:10,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706638627] [2020-07-01 10:46:10,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:10,601 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:10,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:10,601 INFO L82 PathProgramCache]: Analyzing trace with hash 70166, now seen corresponding path program 1 times [2020-07-01 10:46:10,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:10,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775339279] [2020-07-01 10:46:10,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:10,623 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 10:46:10,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775339279] [2020-07-01 10:46:10,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:46:10,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:46:10,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401293779] [2020-07-01 10:46:10,624 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 10:46:10,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:46:10,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 10:46:10,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-01 10:46:10,625 INFO L87 Difference]: Start difference. First operand 14 states and 23 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-07-01 10:46:10,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:46:10,672 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2020-07-01 10:46:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-01 10:46:10,674 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 27 transitions. [2020-07-01 10:46:10,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-07-01 10:46:10,675 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 27 transitions. [2020-07-01 10:46:10,675 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-07-01 10:46:10,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-07-01 10:46:10,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 27 transitions. [2020-07-01 10:46:10,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:46:10,676 INFO L688 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2020-07-01 10:46:10,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 27 transitions. [2020-07-01 10:46:10,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-07-01 10:46:10,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-01 10:46:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2020-07-01 10:46:10,679 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 25 transitions. [2020-07-01 10:46:10,679 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 25 transitions. [2020-07-01 10:46:10,679 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 10:46:10,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 25 transitions. [2020-07-01 10:46:10,680 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 10:46:10,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:46:10,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:46:10,680 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:46:10,680 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:46:10,681 INFO L794 eck$LassoCheckResult]: Stem: 334#ULTIMATE.startENTRY [29] ULTIMATE.startENTRY-->L16-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~w~0_1 5)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~w~0] 335#L16-2 [44] L16-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 336#L12 [2020-07-01 10:46:10,681 INFO L796 eck$LassoCheckResult]: Loop: 336#L12 [41] L12-->L16: Formula: (>= (+ v_ULTIMATE.start_main_~i~0_16 v_ULTIMATE.start_main_~w~0_9) 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} AuxVars[] AssignedVars[] 337#L16 [42] L16-->L16-2: Formula: (and (>= v_ULTIMATE.start_main_~w~0_7 v_ULTIMATE.start_main_~i~0_10) (= v_ULTIMATE.start_main_~i~0_9 0)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 331#L16-2 [43] L16-2-->L12: Formula: (> 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 336#L12 [2020-07-01 10:46:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:10,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1904, now seen corresponding path program 4 times [2020-07-01 10:46:10,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:10,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781895633] [2020-07-01 10:46:10,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:10,688 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:10,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:10,688 INFO L82 PathProgramCache]: Analyzing trace with hash 70537, now seen corresponding path program 1 times [2020-07-01 10:46:10,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:10,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103186298] [2020-07-01 10:46:10,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:10,699 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 10:46:10,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103186298] [2020-07-01 10:46:10,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:46:10,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:46:10,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338074260] [2020-07-01 10:46:10,701 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 10:46:10,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:46:10,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:46:10,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:46:10,701 INFO L87 Difference]: Start difference. First operand 17 states and 25 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-07-01 10:46:10,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:46:10,717 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2020-07-01 10:46:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:46:10,718 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2020-07-01 10:46:10,719 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 10:46:10,719 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 15 states and 19 transitions. [2020-07-01 10:46:10,719 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-07-01 10:46:10,720 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-07-01 10:46:10,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2020-07-01 10:46:10,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:46:10,720 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-07-01 10:46:10,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2020-07-01 10:46:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-07-01 10:46:10,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-01 10:46:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2020-07-01 10:46:10,722 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-07-01 10:46:10,722 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-07-01 10:46:10,722 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 10:46:10,722 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2020-07-01 10:46:10,723 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 10:46:10,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:46:10,723 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:46:10,723 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:46:10,723 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2020-07-01 10:46:10,723 INFO L794 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY [29] ULTIMATE.startENTRY-->L16-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~w~0_1 5)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~w~0] 373#L16-2 [44] L16-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 383#L12 [2020-07-01 10:46:10,724 INFO L796 eck$LassoCheckResult]: Loop: 383#L12 [41] L12-->L16: Formula: (>= (+ v_ULTIMATE.start_main_~i~0_16 v_ULTIMATE.start_main_~w~0_9) 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} AuxVars[] AssignedVars[] 374#L16 [30] L16-->L16-2: Formula: (and (= 0 (+ v_ULTIMATE.start_main_~i~0_6 v_ULTIMATE.start_main_~i~0_8 1)) (< v_ULTIMATE.start_main_~w~0_6 v_ULTIMATE.start_main_~i~0_8)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_6} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 375#L16-2 [43] L16-2-->L12: Formula: (> 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 378#L12 [32] L12-->L16-2: Formula: (and (< (+ v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~w~0_8) 0) (= 1 (+ v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~i~0_13))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 379#L16-2 [43] L16-2-->L12: Formula: (> 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 383#L12 [2020-07-01 10:46:10,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:10,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1904, now seen corresponding path program 5 times [2020-07-01 10:46:10,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:10,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845268547] [2020-07-01 10:46:10,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:10,730 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:10,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:10,731 INFO L82 PathProgramCache]: Analyzing trace with hash 67429600, now seen corresponding path program 1 times [2020-07-01 10:46:10,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:10,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265193819] [2020-07-01 10:46:10,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:46:10,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265193819] [2020-07-01 10:46:10,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585732478] [2020-07-01 10:46:10,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 10:46:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:46:10,783 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 10:46:10,784 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:46:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:46:10,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 10:46:10,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-07-01 10:46:10,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620117478] [2020-07-01 10:46:10,793 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 10:46:10,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:46:10,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 10:46:10,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-01 10:46:10,794 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 6 Second operand 5 states. [2020-07-01 10:46:10,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:46:10,831 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2020-07-01 10:46:10,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-01 10:46:10,833 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2020-07-01 10:46:10,833 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 10:46:10,834 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 19 transitions. [2020-07-01 10:46:10,834 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-07-01 10:46:10,834 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-07-01 10:46:10,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 19 transitions. [2020-07-01 10:46:10,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:46:10,834 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-07-01 10:46:10,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 19 transitions. [2020-07-01 10:46:10,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 9. [2020-07-01 10:46:10,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-01 10:46:10,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2020-07-01 10:46:10,836 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2020-07-01 10:46:10,836 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2020-07-01 10:46:10,836 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2020-07-01 10:46:10,836 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2020-07-01 10:46:10,837 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 10:46:10,837 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:46:10,837 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:46:10,837 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:46:10,837 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-07-01 10:46:10,838 INFO L794 eck$LassoCheckResult]: Stem: 425#ULTIMATE.startENTRY [29] ULTIMATE.startENTRY-->L16-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~w~0_1 5)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~w~0] 426#L16-2 [44] L16-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 429#L12 [2020-07-01 10:46:10,838 INFO L796 eck$LassoCheckResult]: Loop: 429#L12 [41] L12-->L16: Formula: (>= (+ v_ULTIMATE.start_main_~i~0_16 v_ULTIMATE.start_main_~w~0_9) 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} AuxVars[] AssignedVars[] 423#L16 [30] L16-->L16-2: Formula: (and (= 0 (+ v_ULTIMATE.start_main_~i~0_6 v_ULTIMATE.start_main_~i~0_8 1)) (< v_ULTIMATE.start_main_~w~0_6 v_ULTIMATE.start_main_~i~0_8)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_6} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 424#L16-2 [43] L16-2-->L12: Formula: (> 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 427#L12 [32] L12-->L16-2: Formula: (and (< (+ v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~w~0_8) 0) (= 1 (+ v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~i~0_13))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 428#L16-2 [44] L16-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 429#L12 [2020-07-01 10:46:10,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:10,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1904, now seen corresponding path program 6 times [2020-07-01 10:46:10,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:10,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282432060] [2020-07-01 10:46:10,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:10,844 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:10,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:10,844 INFO L82 PathProgramCache]: Analyzing trace with hash 67429601, now seen corresponding path program 1 times [2020-07-01 10:46:10,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:10,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339007481] [2020-07-01 10:46:10,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:10,854 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:10,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:46:10,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1285870894, now seen corresponding path program 1 times [2020-07-01 10:46:10,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:46:10,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809659063] [2020-07-01 10:46:10,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:46:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:46:10,865 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:46:10,905 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:46:10,906 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:46:10,906 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:46:10,906 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:46:10,906 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:46:10,906 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:10,906 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:46:10,906 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:46:10,907 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration7_Loop [2020-07-01 10:46:10,907 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:46:10,907 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:46:10,908 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 10:46:10,912 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 10:46:10,921 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 10:46:10,965 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:46:10,965 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/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 10:46:10,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:10,970 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:10,975 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:46:10,975 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:11,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:11,007 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:11,042 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:46:11,042 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:11,131 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:46:11,132 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=7, ULTIMATE.start_main_~w~0=-7} Honda state: {ULTIMATE.start_main_~i~0=7, ULTIMATE.start_main_~w~0=-7} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0=1, ULTIMATE.start_main_~w~0=1}, {ULTIMATE.start_main_~i~0=1, ULTIMATE.start_main_~w~0=-1}, {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~w~0=0}] Lambdas: [1, 1, 1] Nus: [0, 1] No working directory specified, using /export/starexec/sandbox2/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 10:46:11,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:11,164 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:11,168 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:46:11,168 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-07-01 10:46:11,208 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:46:11,208 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:46:11,208 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:46:11,208 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:46:11,208 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:46:11,208 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:46:11,209 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:46:11,209 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:46:11,209 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration7_Lasso [2020-07-01 10:46:11,209 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:46:11,209 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:46:11,210 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 10:46:11,213 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 10:46:11,215 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 10:46:11,218 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 10:46:11,220 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 10:46:11,285 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:46:11,286 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/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 10:46:11,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:11,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:11,300 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:46:11,300 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 10:46:11,333 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:11,333 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:11,336 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:46:11,336 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 10:46:11,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:11,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:11,372 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:46:11,373 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_6=1} Honda state: {v_rep~unnamed0~0~true_6=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 10:46:11,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:11,404 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:11,408 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:46:11,408 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_6=0} Honda state: {v_rep~unnamed0~0~false_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 10:46:11,440 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:46:11,440 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/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 10:46:11,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:46:11,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:46:11,552 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:46:11,552 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~w~0=0, ULTIMATE.start_main_~i~0=0} Honda state: {ULTIMATE.start_main_~w~0=5, ULTIMATE.start_main_~i~0=7} Generalized eigenvectors: [{ULTIMATE.start_main_~w~0=1, ULTIMATE.start_main_~i~0=1}, {ULTIMATE.start_main_~w~0=-1, ULTIMATE.start_main_~i~0=1}, {ULTIMATE.start_main_~w~0=0, ULTIMATE.start_main_~i~0=0}] Lambdas: [1, 1, 0] Nus: [0, 1] [2020-07-01 10:46:11,588 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 10:46:11,590 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 10:46:11,590 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 10:46:11,590 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 10:46:11,591 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 10:46:11,591 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 10:46:11,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:46:11 BasicIcfg [2020-07-01 10:46:11,602 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:46:11,604 INFO L168 Benchmark]: Toolchain (without parser) took 3809.90 ms. Allocated memory was 514.9 MB in the beginning and 589.3 MB in the end (delta: 74.4 MB). Free memory was 438.5 MB in the beginning and 381.5 MB in the end (delta: 57.0 MB). Peak memory consumption was 131.5 MB. Max. memory is 50.3 GB. [2020-07-01 10:46:11,605 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.4 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:46:11,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.60 ms. Allocated memory was 514.9 MB in the beginning and 562.6 MB in the end (delta: 47.7 MB). Free memory was 438.5 MB in the beginning and 530.0 MB in the end (delta: -91.5 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:46:11,606 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.40 ms. Allocated memory is still 562.6 MB. Free memory was 530.0 MB in the beginning and 528.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:46:11,607 INFO L168 Benchmark]: Boogie Preprocessor took 19.55 ms. Allocated memory is still 562.6 MB. Free memory was 528.0 MB in the beginning and 527.3 MB in the end (delta: 673.9 kB). Peak memory consumption was 673.9 kB. Max. memory is 50.3 GB. [2020-07-01 10:46:11,608 INFO L168 Benchmark]: RCFGBuilder took 244.79 ms. Allocated memory is still 562.6 MB. Free memory was 527.3 MB in the beginning and 515.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:46:11,608 INFO L168 Benchmark]: BlockEncodingV2 took 70.89 ms. Allocated memory is still 562.6 MB. Free memory was 515.2 MB in the beginning and 509.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:46:11,609 INFO L168 Benchmark]: TraceAbstraction took 144.51 ms. Allocated memory is still 562.6 MB. Free memory was 509.1 MB in the beginning and 500.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:46:11,609 INFO L168 Benchmark]: BuchiAutomizer took 2994.39 ms. Allocated memory was 562.6 MB in the beginning and 589.3 MB in the end (delta: 26.7 MB). Free memory was 500.3 MB in the beginning and 381.5 MB in the end (delta: 118.8 MB). Peak memory consumption was 145.5 MB. Max. memory is 50.3 GB. [2020-07-01 10:46:11,613 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 4 locations, 7 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.4 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 295.60 ms. Allocated memory was 514.9 MB in the beginning and 562.6 MB in the end (delta: 47.7 MB). Free memory was 438.5 MB in the beginning and 530.0 MB in the end (delta: -91.5 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.40 ms. Allocated memory is still 562.6 MB. Free memory was 530.0 MB in the beginning and 528.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.55 ms. Allocated memory is still 562.6 MB. Free memory was 528.0 MB in the beginning and 527.3 MB in the end (delta: 673.9 kB). Peak memory consumption was 673.9 kB. Max. memory is 50.3 GB. * RCFGBuilder took 244.79 ms. Allocated memory is still 562.6 MB. Free memory was 527.3 MB in the beginning and 515.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 70.89 ms. Allocated memory is still 562.6 MB. Free memory was 515.2 MB in the beginning and 509.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 144.51 ms. Allocated memory is still 562.6 MB. Free memory was 509.1 MB in the beginning and 500.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2994.39 ms. Allocated memory was 562.6 MB in the beginning and 589.3 MB in the end (delta: 26.7 MB). Free memory was 500.3 MB in the beginning and 381.5 MB in the end (delta: 118.8 MB). Peak memory consumption was 145.5 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false * 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: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 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=4occurred 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 7 terminating modules (5 trivial, 0 deterministic, 2 nondeterministic) and one nonterminating remainder module.One nondeterministic module has affine ranking function -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 5 locations. 5 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 2.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 6. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 39 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 17 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 39 SDslu, 0 SDs, 0 SdLazy, 179 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax176 hnf100 lsp56 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq141 hnf94 smp100 dnf100 smp100 tf108 neg100 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 12]: Nontermination argument in form of an infinite program execution. [2020-07-01 10:46:11,630 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 10:46:11,631 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 10:46:11,631 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 10:46:11,631 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 10:46:11,632 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 10:46:11,632 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 10:46:11,632 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 10:46:11,633 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 10:46:11,633 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 10:46:11,634 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 10:46:11,634 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 10:46:11,634 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false Nontermination argument in form of an infinite execution State at position 0 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@722f4118=0, ~unnamed0~0~true=1, \result=0, w=0, ~unnamed0~0~false=0, i=0} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@722f4118=0, ~unnamed0~0~true=1, \result=0, w=5, ~unnamed0~0~false=0, i=7} For i>1, the state at position i is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@722f4118=0 + sum_{k=0}^i 0, ~unnamed0~0~true=1 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0, w=5 + sum_{k=0}^i 1 + -1, ~unnamed0~0~false=0 + sum_{k=0}^i 0, i=7 + sum_{k=0}^i 1 + 1} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 2GEVs Lambdas: [1, 1, 0] Mus: [0, 1] - NonterminatingLassoResult [Line: 12]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int w; [L8] i = __VERIFIER_nondet_int() [L9] w = 5 [L11] COND TRUE i != 0 Loop: [L12] COND FALSE !(i < -w) [L16] COND TRUE i > w [L17] i = i+1 [L18] i = i*(-1) [L11] COND TRUE i != 0 [L12] COND TRUE i < -w [L13] i = i-1 [L14] i = i*(-1) [L11] COND TRUE i != 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 10:46:04.559 ----------------------------------------------- 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/sandbox2/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/sandbox2/tmp/BenchExec_run_3VyV4J/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:46:12.064 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check