/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 10:36:37,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:36:37,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:36:37,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:36:37,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:36:37,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:36:37,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:36:37,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:36:37,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:36:37,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:36:37,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:36:37,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:36:37,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:36:37,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:36:37,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:36:37,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:36:37,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:36:37,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:36:37,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:36:37,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:36:37,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:36:37,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:36:37,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:36:37,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:36:37,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:36:37,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:36:37,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:36:37,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:36:37,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:36:37,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:36:37,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:36:37,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:36:37,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:36:37,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:36:37,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:36:37,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:36:37,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:36:37,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:36:37,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:36:37,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:36:37,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:36:37,747 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 10:36:37,761 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:36:37,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:36:37,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:36:37,763 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:36:37,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:36:37,763 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:36:37,763 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:36:37,763 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:36:37,764 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:36:37,764 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:36:37,764 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:36:37,764 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:36:37,764 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:36:37,764 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:36:37,765 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:37,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:36:37,765 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:36:37,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:36:37,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:36:37,765 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:36:37,766 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:36:37,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:36:37,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:36:37,766 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:36:37,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:36:37,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:36:37,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:36:37,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:36:37,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:36:38,256 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:36:38,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:36:38,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:36:38,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:36:38,303 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:36:38,304 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 10:36:38,412 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_Gho6L9/tmp/11ea908554d046099bc1ca26af56f113/FLAGfc08721b9 [2020-07-01 10:36:38,944 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:36:38,945 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 10:36:38,959 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_Gho6L9/tmp/11ea908554d046099bc1ca26af56f113/FLAGfc08721b9 [2020-07-01 10:36:39,345 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_Gho6L9/tmp/11ea908554d046099bc1ca26af56f113 [2020-07-01 10:36:39,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:36:39,358 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:36:39,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:36:39,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:36:39,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:36:39,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:36:39" (1/1) ... [2020-07-01 10:36:39,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6392df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:39, skipping insertion in model container [2020-07-01 10:36:39,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:36:39" (1/1) ... [2020-07-01 10:36:39,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:36:39,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:36:39,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:36:39,622 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:36:39,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:36:39,654 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:36:39,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:39 WrapperNode [2020-07-01 10:36:39,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:36:39,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:36:39,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:36:39,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:36:39,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:39" (1/1) ... [2020-07-01 10:36:39,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:39" (1/1) ... [2020-07-01 10:36:39,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:36:39,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:36:39,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:36:39,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:36:39,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:39" (1/1) ... [2020-07-01 10:36:39,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:39" (1/1) ... [2020-07-01 10:36:39,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:39" (1/1) ... [2020-07-01 10:36:39,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:39" (1/1) ... [2020-07-01 10:36:39,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:39" (1/1) ... [2020-07-01 10:36:39,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:39" (1/1) ... [2020-07-01 10:36:39,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:39" (1/1) ... [2020-07-01 10:36:39,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:36:39,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:36:39,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:36:39,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:36:39,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:39" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:36:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:36:39,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:36:39,988 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:36:39,988 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:36:39,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:36:39 BoogieIcfgContainer [2020-07-01 10:36:39,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:36:39,993 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:36:39,993 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:36:39,995 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:36:39,996 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:36:39" (1/1) ... [2020-07-01 10:36:40,008 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 13 edges [2020-07-01 10:36:40,010 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:36:40,010 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:36:40,011 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:36:40,011 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:36:40,013 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:36:40,014 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:36:40,014 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:36:40,029 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:36:40,045 INFO L200 BlockEncoder]: SBE split 4 edges [2020-07-01 10:36:40,049 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:36:40,051 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:36:40,062 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 10:36:40,064 INFO L70 RemoveSinkStates]: Removed 4 edges and 2 locations by removing sink states [2020-07-01 10:36:40,065 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:36:40,065 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:36:40,065 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:36:40,066 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:36:40,066 INFO L313 BlockEncoder]: Encoded RCFG 5 locations, 11 edges [2020-07-01 10:36:40,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:36:40 BasicIcfg [2020-07-01 10:36:40,066 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:36:40,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:36:40,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:36:40,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:36:40,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:36:39" (1/4) ... [2020-07-01 10:36:40,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797f23e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:36:40, skipping insertion in model container [2020-07-01 10:36:40,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:39" (2/4) ... [2020-07-01 10:36:40,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797f23e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:36:40, skipping insertion in model container [2020-07-01 10:36:40,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:36:39" (3/4) ... [2020-07-01 10:36:40,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797f23e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:36:40, skipping insertion in model container [2020-07-01 10:36:40,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:36:40" (4/4) ... [2020-07-01 10:36:40,075 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:36:40,086 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:36:40,096 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 10:36:40,110 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 10:36:40,133 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:36:40,133 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:36:40,133 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:36:40,133 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:36:40,133 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:36:40,133 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:36:40,134 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:36:40,134 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:36:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-07-01 10:36:40,153 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:36:40,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-07-01 10:36:40,207 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:36:40,207 INFO L268 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-07-01 10:36:40,207 INFO L271 CegarLoopResult]: At program point L27-2(lines 19 32) the Hoare annotation is: true [2020-07-01 10:36:40,208 INFO L268 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-07-01 10:36:40,208 INFO L268 CegarLoopResult]: For program point L20(lines 20 31) no Hoare annotation was computed. [2020-07-01 10:36:40,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:36:40 BasicIcfg [2020-07-01 10:36:40,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:36:40,217 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:36:40,217 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:36:40,220 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:36:40,221 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:36:40,221 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:36:39" (1/5) ... [2020-07-01 10:36:40,222 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@515de50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:36:40, skipping insertion in model container [2020-07-01 10:36:40,222 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:36:40,222 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:39" (2/5) ... [2020-07-01 10:36:40,223 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@515de50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:36:40, skipping insertion in model container [2020-07-01 10:36:40,223 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:36:40,223 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:36:39" (3/5) ... [2020-07-01 10:36:40,223 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@515de50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:36:40, skipping insertion in model container [2020-07-01 10:36:40,223 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:36:40,224 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:36:40" (4/5) ... [2020-07-01 10:36:40,224 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@515de50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:36:40, skipping insertion in model container [2020-07-01 10:36:40,224 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:36:40,224 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:36:40" (5/5) ... [2020-07-01 10:36:40,226 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:36:40,253 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:36:40,253 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:36:40,254 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:36:40,254 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:36:40,254 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:36:40,254 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:36:40,254 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:36:40,254 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:36:40,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-07-01 10:36:40,274 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 10:36:40,275 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:36:40,275 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:36:40,281 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:36:40,282 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:36:40,282 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:36:40,282 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-07-01 10:36:40,283 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 10:36:40,283 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:36:40,283 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:36:40,283 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:36:40,283 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:36:40,288 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [35] ULTIMATE.startENTRY-->L27-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 6#L27-2true [2020-07-01 10:36:40,289 INFO L796 eck$LassoCheckResult]: Loop: 6#L27-2true [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 7#L20true [55] L20-->L27: Formula: (and (> 0 v_ULTIMATE.start_main_~b~0_8) (= v_ULTIMATE.start_main_~y~0_10 (+ v_ULTIMATE.start_main_~y~0_11 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 4#L27true [37] L27-->L27-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet5_5|) InVars {ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_5|} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5] 6#L27-2true [2020-07-01 10:36:40,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:40,295 INFO L82 PathProgramCache]: Analyzing trace with hash 66, now seen corresponding path program 1 times [2020-07-01 10:36:40,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:40,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708263795] [2020-07-01 10:36:40,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:40,383 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:40,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:40,384 INFO L82 PathProgramCache]: Analyzing trace with hash 74778, now seen corresponding path program 1 times [2020-07-01 10:36:40,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:40,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201050335] [2020-07-01 10:36:40,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:40,402 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:40,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2011193, now seen corresponding path program 1 times [2020-07-01 10:36:40,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:40,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450877809] [2020-07-01 10:36:40,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:40,421 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:40,483 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:40,483 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:40,483 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:40,484 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:40,484 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:36:40,484 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:40,484 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:40,484 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:40,484 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:36:40,485 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:40,485 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:40,507 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 10:36:40,521 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 10:36:40,527 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 10:36:40,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:36:40,540 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 10:36:40,545 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 10:36:40,675 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:40,676 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:40,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:40,683 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:40,693 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:40,693 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~b~0=-1} Honda state: {ULTIMATE.start_main_~b~0=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:40,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:40,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:40,731 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:40,731 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/sandbox/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 10:36:40,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:40,763 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:40,768 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:40,768 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/sandbox/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 10:36:40,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:40,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:40,805 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:40,805 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=0} Honda state: {ULTIMATE.start_main_#t~nondet5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:40,838 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:40,838 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:40,842 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:40,842 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:40,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:40,875 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:40,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:36:40,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:40,950 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:36:40,952 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:40,953 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:40,953 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:40,953 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:40,953 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:36:40,953 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:40,953 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:40,953 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:40,954 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:36:40,954 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:40,954 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:40,956 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 10:36:40,961 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 10:36:40,966 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 10:36:40,970 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 10:36:40,974 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 10:36:40,977 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 10:36:41,064 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:41,070 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/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 10:36:41,076 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 10:36:41,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:41,079 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:41,080 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:41,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:41,081 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:41,083 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:41,083 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:41,086 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:41,122 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 10:36:41,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:41,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:41,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:41,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:41,130 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:36:41,130 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:36:41,135 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:41,170 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 10:36:41,173 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:41,173 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:41,173 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:41,173 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:41,174 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:41,175 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:41,175 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:41,178 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:41,212 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 10:36:41,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:41,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:41,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:41,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:41,218 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:36:41,218 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:36:41,224 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:41,257 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 10:36:41,259 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:41,259 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:41,259 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:41,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:41,260 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:41,261 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:41,261 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:41,263 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:41,295 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 10:36:41,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:41,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:41,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:41,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:41,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:41,299 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:41,299 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:41,302 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:36:41,307 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:36:41,307 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 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 10:36:41,311 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:36:41,311 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:36:41,312 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:36:41,312 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-07-01 10:36:41,345 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:36:41,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:41,396 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:36:41,397 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:41,410 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:36:41,411 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:41,488 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 10:36:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:41,542 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:36:41,543 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:41,549 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 10:36:41,555 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 10:36:41,556 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states. Second operand 4 states. [2020-07-01 10:36:41,695 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states.. Second operand 4 states. Result 18 states and 38 transitions. Complement of second has 10 states. [2020-07-01 10:36:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 10:36:41,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 10:36:41,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 31 transitions. [2020-07-01 10:36:41,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 31 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 10:36:41,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:41,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 31 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 10:36:41,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:41,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 31 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 10:36:41,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:41,711 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 38 transitions. [2020-07-01 10:36:41,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 10:36:41,718 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 13 states and 26 transitions. [2020-07-01 10:36:41,719 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-07-01 10:36:41,719 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-07-01 10:36:41,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 26 transitions. [2020-07-01 10:36:41,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:36:41,721 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 26 transitions. [2020-07-01 10:36:41,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 26 transitions. [2020-07-01 10:36:41,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2020-07-01 10:36:41,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-01 10:36:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 24 transitions. [2020-07-01 10:36:41,752 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 24 transitions. [2020-07-01 10:36:41,752 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 24 transitions. [2020-07-01 10:36:41,752 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 10:36:41,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 24 transitions. [2020-07-01 10:36:41,753 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 10:36:41,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:36:41,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:36:41,754 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 10:36:41,754 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:36:41,754 INFO L794 eck$LassoCheckResult]: Stem: 78#ULTIMATE.startENTRY [35] ULTIMATE.startENTRY-->L27-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 79#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 86#L20 [46] L20-->L22: Formula: (and (= 0 v_ULTIMATE.start_main_~b~0_6) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 85#L22 [2020-07-01 10:36:41,755 INFO L796 eck$LassoCheckResult]: Loop: 85#L22 [39] L22-->L27-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet4_5|) InVars {ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_5|} OutVars{ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet4] 81#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 88#L20 [46] L20-->L22: Formula: (and (= 0 v_ULTIMATE.start_main_~b~0_6) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 85#L22 [2020-07-01 10:36:41,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:41,755 INFO L82 PathProgramCache]: Analyzing trace with hash 64867, now seen corresponding path program 1 times [2020-07-01 10:36:41,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:41,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398067593] [2020-07-01 10:36:41,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:41,769 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:41,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:41,770 INFO L82 PathProgramCache]: Analyzing trace with hash 68711, now seen corresponding path program 1 times [2020-07-01 10:36:41,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:41,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636348348] [2020-07-01 10:36:41,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:41,780 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:41,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:41,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1932491717, now seen corresponding path program 1 times [2020-07-01 10:36:41,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:41,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680952506] [2020-07-01 10:36:41,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:41,798 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:41,828 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:41,829 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:41,829 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:41,829 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:41,829 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:36:41,829 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:41,829 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:41,829 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:41,829 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:36:41,830 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:41,830 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:41,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:36:41,841 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 10:36:41,847 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 10:36:41,851 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 10:36:41,854 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 10:36:41,864 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 10:36:41,947 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:41,947 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:41,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:41,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:41,957 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:41,957 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/sandbox/solver/bin/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:41,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:41,991 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:41,995 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:41,995 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~b~0=0} Honda state: {ULTIMATE.start_main_~b~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:42,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:42,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:42,033 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:42,033 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/sandbox/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:42,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:42,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:42,071 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:42,071 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 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 10:36:42,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:42,124 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/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 10:36:42,159 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:36:42,159 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:42,219 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:36:42,221 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:42,221 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:42,222 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:42,222 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:42,222 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:36:42,222 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:42,222 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:42,222 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:42,222 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:36:42,222 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:42,223 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:42,224 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 10:36:42,235 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 10:36:42,245 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 10:36:42,249 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 10:36:42,258 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 10:36:42,261 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 10:36:42,331 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:42,331 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:42,334 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 10:36:42,335 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:42,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:42,336 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:42,336 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:42,339 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:36:42,339 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:36:42,343 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:42,375 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 10:36:42,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:42,377 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:42,377 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:42,377 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:42,377 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:42,378 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:42,379 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:42,380 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:42,412 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 10:36:42,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:42,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:42,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:42,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:42,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:42,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:42,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:42,417 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:42,448 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 10:36:42,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:42,450 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:42,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:42,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:42,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:42,452 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:42,452 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:42,455 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:36:42,459 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:36:42,459 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:42,463 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:36:42,464 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:36:42,464 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:36:42,464 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~n~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-07-01 10:36:42,494 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:36:42,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:42,515 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:36:42,516 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:42,521 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:36:42,521 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:42,531 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 10:36:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:42,545 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:36:42,545 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:42,559 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 10:36:42,559 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 10:36:42,560 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 11 states and 24 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-07-01 10:36:42,614 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 11 states and 24 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 19 states and 46 transitions. Complement of second has 8 states. [2020-07-01 10:36:42,615 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 10:36:42,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 10:36:42,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2020-07-01 10:36:42,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 3 letters. Loop has 3 letters. [2020-07-01 10:36:42,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:42,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 6 letters. Loop has 3 letters. [2020-07-01 10:36:42,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:42,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 3 letters. Loop has 6 letters. [2020-07-01 10:36:42,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:42,619 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 46 transitions. [2020-07-01 10:36:42,620 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-07-01 10:36:42,621 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 16 states and 38 transitions. [2020-07-01 10:36:42,622 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-07-01 10:36:42,622 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-07-01 10:36:42,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 38 transitions. [2020-07-01 10:36:42,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:36:42,622 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 38 transitions. [2020-07-01 10:36:42,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 38 transitions. [2020-07-01 10:36:42,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-01 10:36:42,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-01 10:36:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 38 transitions. [2020-07-01 10:36:42,625 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 38 transitions. [2020-07-01 10:36:42,625 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 38 transitions. [2020-07-01 10:36:42,626 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 10:36:42,626 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 38 transitions. [2020-07-01 10:36:42,627 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-07-01 10:36:42,627 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:36:42,627 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:36:42,627 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 10:36:42,627 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2020-07-01 10:36:42,628 INFO L794 eck$LassoCheckResult]: Stem: 160#ULTIMATE.startENTRY [35] ULTIMATE.startENTRY-->L27-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 161#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 173#L20 [46] L20-->L22: Formula: (and (= 0 v_ULTIMATE.start_main_~b~0_6) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 167#L22 [2020-07-01 10:36:42,628 INFO L796 eck$LassoCheckResult]: Loop: 167#L22 [39] L22-->L27-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet4_5|) InVars {ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_5|} OutVars{ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet4] 169#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 171#L20 [55] L20-->L27: Formula: (and (> 0 v_ULTIMATE.start_main_~b~0_8) (= v_ULTIMATE.start_main_~y~0_10 (+ v_ULTIMATE.start_main_~y~0_11 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 162#L27 [37] L27-->L27-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet5_5|) InVars {ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_5|} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5] 163#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 174#L20 [46] L20-->L22: Formula: (and (= 0 v_ULTIMATE.start_main_~b~0_6) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 167#L22 [2020-07-01 10:36:42,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:42,628 INFO L82 PathProgramCache]: Analyzing trace with hash 64867, now seen corresponding path program 2 times [2020-07-01 10:36:42,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:42,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849919619] [2020-07-01 10:36:42,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:42,640 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:42,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:42,641 INFO L82 PathProgramCache]: Analyzing trace with hash 2047274518, now seen corresponding path program 1 times [2020-07-01 10:36:42,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:42,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159884100] [2020-07-01 10:36:42,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:36:42,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159884100] [2020-07-01 10:36:42,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:36:42,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:36:42,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267352516] [2020-07-01 10:36:42,687 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 10:36:42,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:36:42,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:36:42,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:36:42,690 INFO L87 Difference]: Start difference. First operand 16 states and 38 transitions. cyclomatic complexity: 24 Second operand 3 states. [2020-07-01 10:36:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:36:42,714 INFO L93 Difference]: Finished difference Result 24 states and 52 transitions. [2020-07-01 10:36:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:36:42,716 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 52 transitions. [2020-07-01 10:36:42,717 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2020-07-01 10:36:42,718 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 22 states and 50 transitions. [2020-07-01 10:36:42,718 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-07-01 10:36:42,719 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-07-01 10:36:42,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 50 transitions. [2020-07-01 10:36:42,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:36:42,719 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 50 transitions. [2020-07-01 10:36:42,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 50 transitions. [2020-07-01 10:36:42,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-01 10:36:42,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-01 10:36:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 50 transitions. [2020-07-01 10:36:42,722 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 50 transitions. [2020-07-01 10:36:42,722 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 50 transitions. [2020-07-01 10:36:42,722 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 10:36:42,722 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 50 transitions. [2020-07-01 10:36:42,723 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2020-07-01 10:36:42,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:36:42,723 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:36:42,724 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 10:36:42,724 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2020-07-01 10:36:42,724 INFO L794 eck$LassoCheckResult]: Stem: 206#ULTIMATE.startENTRY [35] ULTIMATE.startENTRY-->L27-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 207#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 219#L20 [46] L20-->L22: Formula: (and (= 0 v_ULTIMATE.start_main_~b~0_6) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 215#L22 [2020-07-01 10:36:42,724 INFO L796 eck$LassoCheckResult]: Loop: 215#L22 [39] L22-->L27-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet4_5|) InVars {ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_5|} OutVars{ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet4] 217#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 225#L20 [56] L20-->L27: Formula: (and (= v_ULTIMATE.start_main_~y~0_10 (+ v_ULTIMATE.start_main_~y~0_11 (- 1))) (< 0 v_ULTIMATE.start_main_~b~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 224#L27 [37] L27-->L27-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet5_5|) InVars {ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_5|} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5] 210#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 223#L20 [46] L20-->L22: Formula: (and (= 0 v_ULTIMATE.start_main_~b~0_6) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 215#L22 [2020-07-01 10:36:42,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:42,725 INFO L82 PathProgramCache]: Analyzing trace with hash 64867, now seen corresponding path program 3 times [2020-07-01 10:36:42,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:42,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679934933] [2020-07-01 10:36:42,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:42,736 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:42,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:42,736 INFO L82 PathProgramCache]: Analyzing trace with hash 2047304309, now seen corresponding path program 1 times [2020-07-01 10:36:42,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:42,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422265578] [2020-07-01 10:36:42,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:36:42,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422265578] [2020-07-01 10:36:42,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:36:42,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 10:36:42,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866768268] [2020-07-01 10:36:42,754 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 10:36:42,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:36:42,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:36:42,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:36:42,755 INFO L87 Difference]: Start difference. First operand 22 states and 50 transitions. cyclomatic complexity: 30 Second operand 3 states. [2020-07-01 10:36:42,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:36:42,775 INFO L93 Difference]: Finished difference Result 32 states and 58 transitions. [2020-07-01 10:36:42,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:36:42,777 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 58 transitions. [2020-07-01 10:36:42,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-07-01 10:36:42,779 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 28 states and 51 transitions. [2020-07-01 10:36:42,779 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-07-01 10:36:42,780 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-07-01 10:36:42,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 51 transitions. [2020-07-01 10:36:42,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:36:42,780 INFO L688 BuchiCegarLoop]: Abstraction has 28 states and 51 transitions. [2020-07-01 10:36:42,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 51 transitions. [2020-07-01 10:36:42,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-07-01 10:36:42,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-01 10:36:42,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 49 transitions. [2020-07-01 10:36:42,783 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 49 transitions. [2020-07-01 10:36:42,783 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 49 transitions. [2020-07-01 10:36:42,783 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 10:36:42,783 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 49 transitions. [2020-07-01 10:36:42,784 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2020-07-01 10:36:42,784 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:36:42,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:36:42,785 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 10:36:42,785 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2020-07-01 10:36:42,785 INFO L794 eck$LassoCheckResult]: Stem: 266#ULTIMATE.startENTRY [35] ULTIMATE.startENTRY-->L27-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 267#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 281#L20 [46] L20-->L22: Formula: (and (= 0 v_ULTIMATE.start_main_~b~0_6) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 275#L22 [2020-07-01 10:36:42,786 INFO L796 eck$LassoCheckResult]: Loop: 275#L22 [39] L22-->L27-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet4_5|) InVars {ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_5|} OutVars{ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet4] 277#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 286#L20 [55] L20-->L27: Formula: (and (> 0 v_ULTIMATE.start_main_~b~0_8) (= v_ULTIMATE.start_main_~y~0_10 (+ v_ULTIMATE.start_main_~y~0_11 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 284#L27 [59] L27-->L27-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet5_3|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 (- 1))) (= v_ULTIMATE.start_main_~b~0_9 0)) InVars {ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_3|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_2|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 270#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 285#L20 [46] L20-->L22: Formula: (and (= 0 v_ULTIMATE.start_main_~b~0_6) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 275#L22 [2020-07-01 10:36:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:42,786 INFO L82 PathProgramCache]: Analyzing trace with hash 64867, now seen corresponding path program 4 times [2020-07-01 10:36:42,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:42,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365829945] [2020-07-01 10:36:42,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:42,797 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:42,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:42,797 INFO L82 PathProgramCache]: Analyzing trace with hash 2047295660, now seen corresponding path program 1 times [2020-07-01 10:36:42,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:42,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426003515] [2020-07-01 10:36:42,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:42,810 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:42,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:42,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1119431822, now seen corresponding path program 1 times [2020-07-01 10:36:42,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:42,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464310835] [2020-07-01 10:36:42,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:36:42,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464310835] [2020-07-01 10:36:42,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:36:42,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 10:36:42,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381155922] [2020-07-01 10:36:42,896 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:42,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:42,897 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:42,897 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:42,897 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:36:42,897 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:42,897 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:42,897 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:42,898 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-07-01 10:36:42,898 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:42,898 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:42,900 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 10:36:42,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:36:42,908 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 10:36:42,910 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 10:36:42,915 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 10:36:42,918 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 10:36:42,924 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 10:36:43,005 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:43,005 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:43,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:43,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:43,012 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:43,012 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:43,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:43,044 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:43,078 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:36:43,078 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:43,160 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:36:43,162 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:43,162 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:43,162 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:43,162 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:43,162 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:36:43,163 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:43,163 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:43,163 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:43,163 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-07-01 10:36:43,163 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:43,163 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:43,165 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 10:36:43,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:36:43,174 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 10:36:43,179 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 10:36:43,182 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 10:36:43,190 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 10:36:43,193 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 10:36:43,260 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:43,260 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:43,264 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 10:36:43,265 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:43,266 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:43,266 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:43,266 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:43,266 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:43,267 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:43,267 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:43,269 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:43,300 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 10:36:43,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:43,302 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:43,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:43,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:43,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:43,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:43,303 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:43,306 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:36:43,308 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 10:36:43,308 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:43,311 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:36:43,311 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:36:43,311 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:36:43,311 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 10:36:43,340 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:36:43,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:43,357 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:36:43,358 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:43,364 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:36:43,365 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:36:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:43,393 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:36:43,394 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:43,401 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:36:43,402 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:43,417 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:36:43,417 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:43,419 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 6 predicates after loop cannibalization [2020-07-01 10:36:43,419 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 6 loop predicates [2020-07-01 10:36:43,419 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 26 states and 49 transitions. cyclomatic complexity: 25 Second operand 5 states. [2020-07-01 10:36:43,517 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 26 states and 49 transitions. cyclomatic complexity: 25. Second operand 5 states. Result 98 states and 183 transitions. Complement of second has 24 states. [2020-07-01 10:36:43,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 10:36:43,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 10:36:43,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2020-07-01 10:36:43,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 3 letters. Loop has 6 letters. [2020-07-01 10:36:43,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:43,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 9 letters. Loop has 6 letters. [2020-07-01 10:36:43,520 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:43,520 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 3 letters. Loop has 12 letters. [2020-07-01 10:36:43,520 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:43,522 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 98 states and 183 transitions. [2020-07-01 10:36:43,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:36:43,526 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 98 states to 45 states and 79 transitions. [2020-07-01 10:36:43,526 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-07-01 10:36:43,526 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-07-01 10:36:43,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 79 transitions. [2020-07-01 10:36:43,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:36:43,526 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 79 transitions. [2020-07-01 10:36:43,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 79 transitions. [2020-07-01 10:36:43,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2020-07-01 10:36:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-01 10:36:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 60 transitions. [2020-07-01 10:36:43,530 INFO L711 BuchiCegarLoop]: Abstraction has 29 states and 60 transitions. [2020-07-01 10:36:43,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:36:43,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 10:36:43,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 10:36:43,530 INFO L87 Difference]: Start difference. First operand 29 states and 60 transitions. Second operand 3 states. [2020-07-01 10:36:43,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:36:43,547 INFO L93 Difference]: Finished difference Result 35 states and 61 transitions. [2020-07-01 10:36:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 10:36:43,549 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 61 transitions. [2020-07-01 10:36:43,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:36:43,551 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 29 states and 49 transitions. [2020-07-01 10:36:43,551 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-07-01 10:36:43,551 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-07-01 10:36:43,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 49 transitions. [2020-07-01 10:36:43,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:36:43,551 INFO L688 BuchiCegarLoop]: Abstraction has 29 states and 49 transitions. [2020-07-01 10:36:43,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 49 transitions. [2020-07-01 10:36:43,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-07-01 10:36:43,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-01 10:36:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 47 transitions. [2020-07-01 10:36:43,554 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 47 transitions. [2020-07-01 10:36:43,554 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 47 transitions. [2020-07-01 10:36:43,555 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 10:36:43,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 47 transitions. [2020-07-01 10:36:43,555 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:36:43,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:36:43,556 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:36:43,556 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 10:36:43,556 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:36:43,556 INFO L794 eck$LassoCheckResult]: Stem: 574#ULTIMATE.startENTRY [35] ULTIMATE.startENTRY-->L27-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 575#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 586#L20 [46] L20-->L22: Formula: (and (= 0 v_ULTIMATE.start_main_~b~0_6) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 597#L22 [58] L22-->L27-2: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet4_3|) (= v_ULTIMATE.start_main_~b~0_7 1)) InVars {ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_3|} OutVars{ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_2|, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_~b~0] 577#L27-2 [2020-07-01 10:36:43,557 INFO L796 eck$LassoCheckResult]: Loop: 577#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 592#L20 [56] L20-->L27: Formula: (and (= v_ULTIMATE.start_main_~y~0_10 (+ v_ULTIMATE.start_main_~y~0_11 (- 1))) (< 0 v_ULTIMATE.start_main_~b~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 576#L27 [37] L27-->L27-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet5_5|) InVars {ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_5|} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5] 577#L27-2 [2020-07-01 10:36:43,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:43,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2010935, now seen corresponding path program 1 times [2020-07-01 10:36:43,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:43,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290531650] [2020-07-01 10:36:43,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:43,567 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:43,568 INFO L82 PathProgramCache]: Analyzing trace with hash 74809, now seen corresponding path program 1 times [2020-07-01 10:36:43,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:43,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315379215] [2020-07-01 10:36:43,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:43,575 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:43,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:43,575 INFO L82 PathProgramCache]: Analyzing trace with hash -221732541, now seen corresponding path program 1 times [2020-07-01 10:36:43,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:43,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266029190] [2020-07-01 10:36:43,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:43,588 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:43,612 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:43,612 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:43,613 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:43,613 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:43,613 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:36:43,613 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:43,613 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:43,613 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:43,613 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 10:36:43,613 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:43,614 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:43,615 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 10:36:43,620 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 10:36:43,627 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 10:36:43,630 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 10:36:43,632 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 10:36:43,635 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 10:36:43,690 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:43,690 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:43,693 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:43,693 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:43,697 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:43,697 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=0} Honda state: {ULTIMATE.start_main_#t~nondet5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:43,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:43,729 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:43,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:36:43,764 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:43,800 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:36:43,802 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:43,802 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:43,802 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:43,802 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:43,802 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:36:43,802 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:43,802 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:43,802 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:43,803 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 10:36:43,803 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:43,803 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:43,804 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 10:36:43,807 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 10:36:43,814 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 10:36:43,817 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 10:36:43,820 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 10:36:43,822 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 10:36:43,867 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:43,868 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:43,870 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 10:36:43,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:43,872 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:43,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:43,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:43,873 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:43,873 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:43,873 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:43,875 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:43,908 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 10:36:43,909 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:43,910 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:43,910 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:43,910 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:43,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:43,911 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:43,911 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:43,914 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:36:43,916 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:36:43,916 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:43,919 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:36:43,919 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:36:43,919 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:36:43,919 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-07-01 10:36:43,948 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:36:43,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:43,965 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:36:43,965 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:43,969 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:36:43,970 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:43,991 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 10:36:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:44,022 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:36:44,022 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:44,027 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 10:36:44,027 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 10:36:44,027 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 27 states and 47 transitions. cyclomatic complexity: 25 Second operand 4 states. [2020-07-01 10:36:44,138 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 27 states and 47 transitions. cyclomatic complexity: 25. Second operand 4 states. Result 117 states and 173 transitions. Complement of second has 22 states. [2020-07-01 10:36:44,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 10:36:44,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 10:36:44,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2020-07-01 10:36:44,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 10:36:44,143 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:44,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 7 letters. Loop has 3 letters. [2020-07-01 10:36:44,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:44,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 4 letters. Loop has 6 letters. [2020-07-01 10:36:44,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:44,145 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 173 transitions. [2020-07-01 10:36:44,148 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-07-01 10:36:44,149 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 58 states and 88 transitions. [2020-07-01 10:36:44,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-07-01 10:36:44,149 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2020-07-01 10:36:44,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 88 transitions. [2020-07-01 10:36:44,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:36:44,149 INFO L688 BuchiCegarLoop]: Abstraction has 58 states and 88 transitions. [2020-07-01 10:36:44,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 88 transitions. [2020-07-01 10:36:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 27. [2020-07-01 10:36:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-01 10:36:44,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 44 transitions. [2020-07-01 10:36:44,153 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 44 transitions. [2020-07-01 10:36:44,153 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 44 transitions. [2020-07-01 10:36:44,153 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2020-07-01 10:36:44,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 44 transitions. [2020-07-01 10:36:44,153 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:36:44,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:36:44,154 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:36:44,154 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 10:36:44,154 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:36:44,155 INFO L794 eck$LassoCheckResult]: Stem: 791#ULTIMATE.startENTRY [35] ULTIMATE.startENTRY-->L27-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|) (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~b~0] 792#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 803#L20 [46] L20-->L22: Formula: (and (= 0 v_ULTIMATE.start_main_~b~0_6) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 817#L22 [57] L22-->L27-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet4_3|) (= v_ULTIMATE.start_main_~b~0_7 1)) InVars {ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_3|} OutVars{ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_2|, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_~b~0] 794#L27-2 [2020-07-01 10:36:44,155 INFO L796 eck$LassoCheckResult]: Loop: 794#L27-2 [45] L27-2-->L20: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~n~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 806#L20 [56] L20-->L27: Formula: (and (= v_ULTIMATE.start_main_~y~0_10 (+ v_ULTIMATE.start_main_~y~0_11 (- 1))) (< 0 v_ULTIMATE.start_main_~b~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 793#L27 [37] L27-->L27-2: Formula: (= 0 |v_ULTIMATE.start_main_#t~nondet5_5|) InVars {ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_5|} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5] 794#L27-2 [2020-07-01 10:36:44,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:44,155 INFO L82 PathProgramCache]: Analyzing trace with hash 2010934, now seen corresponding path program 1 times [2020-07-01 10:36:44,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:44,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823169124] [2020-07-01 10:36:44,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:44,166 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:44,167 INFO L82 PathProgramCache]: Analyzing trace with hash 74809, now seen corresponding path program 2 times [2020-07-01 10:36:44,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:44,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879923670] [2020-07-01 10:36:44,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:44,186 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:44,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:44,187 INFO L82 PathProgramCache]: Analyzing trace with hash -221762332, now seen corresponding path program 1 times [2020-07-01 10:36:44,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:44,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643336409] [2020-07-01 10:36:44,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:44,200 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:44,232 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:44,232 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:44,232 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:44,232 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:44,233 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:36:44,233 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:44,233 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:44,233 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:44,233 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration7_Loop [2020-07-01 10:36:44,233 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:44,233 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:44,234 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 10:36:44,237 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 10:36:44,240 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 10:36:44,243 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 10:36:44,248 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 10:36:44,250 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 10:36:44,299 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:44,299 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:44,301 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:44,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:44,305 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:44,306 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=0} Honda state: {ULTIMATE.start_main_#t~nondet5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:44,337 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:44,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:44,341 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:44,341 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:44,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:44,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:44,377 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:44,377 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:44,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:44,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:44,413 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:44,413 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~b~0=1} Honda state: {ULTIMATE.start_main_~b~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:44,444 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:44,444 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:44,448 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:44,448 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:44,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:44,479 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:44,514 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:36:44,514 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:44,550 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:36:44,552 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:44,552 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:44,552 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:44,552 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:44,552 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:36:44,552 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:44,552 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:44,552 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:44,552 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration7_Loop [2020-07-01 10:36:44,553 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:44,553 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:44,554 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 10:36:44,557 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 10:36:44,560 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 10:36:44,562 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 10:36:44,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:36:44,569 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 10:36:44,623 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:44,624 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:44,626 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 10:36:44,628 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:44,628 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:44,628 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:44,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:44,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:44,629 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:44,629 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:44,631 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:44,662 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 10:36:44,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:44,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:44,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:44,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:44,666 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:36:44,667 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:36:44,670 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:44,702 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:36:44,703 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:44,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:44,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:44,704 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:44,706 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:36:44,706 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:36:44,710 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:44,741 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 10:36:44,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:44,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:44,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:44,743 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:44,743 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:44,744 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:44,744 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:44,746 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:44,777 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 10:36:44,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:44,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:44,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:44,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:44,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:44,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:44,779 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:44,781 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:44,813 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 10:36:44,814 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:44,814 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:44,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:44,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:44,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:44,816 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:44,816 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:44,819 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:36:44,822 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:36:44,822 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:44,824 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:36:44,824 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:36:44,824 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:36:44,824 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-07-01 10:36:44,853 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:36:44,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:44,870 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:36:44,871 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:44,874 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:36:44,875 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:44,898 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 10:36:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:44,928 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:36:44,929 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:44,933 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 10:36:44,934 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 10:36:44,934 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 27 states and 44 transitions. cyclomatic complexity: 22 Second operand 4 states. [2020-07-01 10:36:45,012 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 27 states and 44 transitions. cyclomatic complexity: 22. Second operand 4 states. Result 106 states and 155 transitions. Complement of second has 22 states. [2020-07-01 10:36:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 10:36:45,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 10:36:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2020-07-01 10:36:45,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 10:36:45,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:45,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 7 letters. Loop has 3 letters. [2020-07-01 10:36:45,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:45,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 4 letters. Loop has 6 letters. [2020-07-01 10:36:45,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:45,015 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 155 transitions. [2020-07-01 10:36:45,017 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:36:45,017 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 0 states and 0 transitions. [2020-07-01 10:36:45,017 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 10:36:45,017 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 10:36:45,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 10:36:45,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:36:45,018 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:36:45,018 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:36:45,018 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:36:45,018 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2020-07-01 10:36:45,018 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 10:36:45,018 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:36:45,018 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 10:36:45,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:36:45 BasicIcfg [2020-07-01 10:36:45,025 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:36:45,044 INFO L168 Benchmark]: Toolchain (without parser) took 5668.71 ms. Allocated memory was 514.9 MB in the beginning and 631.2 MB in the end (delta: 116.4 MB). Free memory was 438.7 MB in the beginning and 486.0 MB in the end (delta: -47.2 MB). Peak memory consumption was 69.2 MB. Max. memory is 50.3 GB. [2020-07-01 10:36:45,044 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 514.9 MB. Free memory is still 458.0 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:36:45,045 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.47 ms. Allocated memory was 514.9 MB in the beginning and 536.3 MB in the end (delta: 21.5 MB). Free memory was 438.2 MB in the beginning and 504.4 MB in the end (delta: -66.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 50.3 GB. [2020-07-01 10:36:45,045 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.19 ms. Allocated memory is still 536.3 MB. Free memory was 504.4 MB in the beginning and 502.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. [2020-07-01 10:36:45,046 INFO L168 Benchmark]: Boogie Preprocessor took 35.96 ms. Allocated memory is still 536.3 MB. Free memory was 502.7 MB in the beginning and 501.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:36:45,046 INFO L168 Benchmark]: RCFGBuilder took 263.93 ms. Allocated memory is still 536.3 MB. Free memory was 501.6 MB in the beginning and 489.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 50.3 GB. [2020-07-01 10:36:45,046 INFO L168 Benchmark]: BlockEncodingV2 took 73.81 ms. Allocated memory is still 536.3 MB. Free memory was 489.1 MB in the beginning and 483.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:36:45,047 INFO L168 Benchmark]: TraceAbstraction took 148.76 ms. Allocated memory is still 536.3 MB. Free memory was 482.6 MB in the beginning and 474.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:36:45,047 INFO L168 Benchmark]: BuchiAutomizer took 4807.89 ms. Allocated memory was 536.3 MB in the beginning and 631.2 MB in the end (delta: 94.9 MB). Free memory was 474.1 MB in the beginning and 486.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 83.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:36:45,050 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 9 locations, 13 edges - StatisticsResult: Encoded RCFG 5 locations, 11 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 514.9 MB. Free memory is still 458.0 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 295.47 ms. Allocated memory was 514.9 MB in the beginning and 536.3 MB in the end (delta: 21.5 MB). Free memory was 438.2 MB in the beginning and 504.4 MB in the end (delta: -66.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 36.19 ms. Allocated memory is still 536.3 MB. Free memory was 504.4 MB in the beginning and 502.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 35.96 ms. Allocated memory is still 536.3 MB. Free memory was 502.7 MB in the beginning and 501.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 263.93 ms. Allocated memory is still 536.3 MB. Free memory was 501.6 MB in the beginning and 489.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 73.81 ms. Allocated memory is still 536.3 MB. Free memory was 489.1 MB in the beginning and 483.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 148.76 ms. Allocated memory is still 536.3 MB. Free memory was 482.6 MB in the beginning and 474.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4807.89 ms. Allocated memory was 536.3 MB in the beginning and 631.2 MB in the end (delta: 94.9 MB). Free memory was 474.1 MB in the beginning and 486.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 83.1 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 0 deterministic, 5 nondeterministic). One nondeterministic module has affine ranking function 2 * y + 1 and consists of 6 locations. One nondeterministic module has affine ranking function 2 * n + -2 * y + 1 and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 5 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 6 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 6 locations. 3 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.7s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 3.5s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 53 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 27 states and ocurred in iteration 5. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 58 SDtfs, 129 SDslu, 130 SDs, 0 SdLazy, 258 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT4 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax151 hnf100 lsp35 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 17ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 10:36:35.480 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp/BenchExec_run_Gho6L9/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:36:45.484 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check