/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:38:20,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:38:20,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:38:20,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:38:20,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:38:20,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:38:20,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:38:20,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:38:20,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:38:20,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:38:20,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:38:20,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:38:20,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:38:20,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:38:20,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:38:21,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:38:21,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:38:21,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:38:21,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:38:21,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:38:21,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:38:21,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:38:21,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:38:21,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:38:21,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:38:21,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:38:21,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:38:21,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:38:21,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:38:21,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:38:21,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:38:21,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:38:21,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:38:21,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:38:21,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:38:21,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:38:21,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:38:21,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:38:21,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:38:21,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:38:21,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:38:21,021 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 11:38:21,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:38:21,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:38:21,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:38:21,037 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:38:21,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:38:21,037 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:38:21,037 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:38:21,038 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:38:21,038 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:38:21,038 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:38:21,038 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:38:21,038 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:38:21,038 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:38:21,039 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:38:21,039 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:21,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:38:21,039 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:38:21,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:38:21,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:38:21,040 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:38:21,040 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:38:21,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:38:21,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:38:21,041 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:38:21,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:38:21,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:38:21,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:38:21,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:38:21,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:38:21,210 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:38:21,224 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:38:21,228 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:38:21,229 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:38:21,230 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:38:21,231 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:38:21,347 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_FBC2uG/tmp/38128ac021fc4e42bb218f10b7e1ee33/FLAG6c485646a [2020-07-01 11:38:21,711 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:38:21,712 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:38:21,719 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_FBC2uG/tmp/38128ac021fc4e42bb218f10b7e1ee33/FLAG6c485646a [2020-07-01 11:38:22,120 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_FBC2uG/tmp/38128ac021fc4e42bb218f10b7e1ee33 [2020-07-01 11:38:22,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:38:22,133 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:38:22,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:38:22,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:38:22,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:38:22,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:38:22" (1/1) ... [2020-07-01 11:38:22,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ceedbcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:38:22, skipping insertion in model container [2020-07-01 11:38:22,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:38:22" (1/1) ... [2020-07-01 11:38:22,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:38:22,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:38:22,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:38:22,399 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:38:22,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:38:22,431 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:38:22,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:38:22 WrapperNode [2020-07-01 11:38:22,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:38:22,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:38:22,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:38:22,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:38:22,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:38:22" (1/1) ... [2020-07-01 11:38:22,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:38:22" (1/1) ... [2020-07-01 11:38:22,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:38:22,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:38:22,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:38:22,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:38:22,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:38:22" (1/1) ... [2020-07-01 11:38:22,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:38:22" (1/1) ... [2020-07-01 11:38:22,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:38:22" (1/1) ... [2020-07-01 11:38:22,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:38:22" (1/1) ... [2020-07-01 11:38:22,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:38:22" (1/1) ... [2020-07-01 11:38:22,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:38:22" (1/1) ... [2020-07-01 11:38:22,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:38:22" (1/1) ... [2020-07-01 11:38:22,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:38:22,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:38:22,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:38:22,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:38:22,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:38:22" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:38:22,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:38:22,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:38:22,748 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:38:22,748 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-01 11:38:22,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:38:22 BoogieIcfgContainer [2020-07-01 11:38:22,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:38:22,752 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:38:22,752 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:38:22,754 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:38:22,755 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:38:22" (1/1) ... [2020-07-01 11:38:22,768 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 13 edges [2020-07-01 11:38:22,769 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:38:22,770 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:38:22,770 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:38:22,771 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:38:22,772 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:38:22,773 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:38:22,774 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:38:22,788 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:38:22,803 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 11:38:22,807 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-07-01 11:38:22,809 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:38:22,819 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 11:38:22,822 INFO L70 RemoveSinkStates]: Removed 6 edges and 2 locations by removing sink states [2020-07-01 11:38:22,823 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:38:22,823 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:38:22,827 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 11:38:22,827 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:38:22,827 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:38:22,827 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:38:22,828 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:38:22,828 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:38:22,828 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-07-01 11:38:22,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:38:22 BasicIcfg [2020-07-01 11:38:22,829 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:38:22,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:38:22,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:38:22,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:38:22,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:38:22" (1/4) ... [2020-07-01 11:38:22,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b04ebaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:38:22, skipping insertion in model container [2020-07-01 11:38:22,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:38:22" (2/4) ... [2020-07-01 11:38:22,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b04ebaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:38:22, skipping insertion in model container [2020-07-01 11:38:22,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:38:22" (3/4) ... [2020-07-01 11:38:22,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b04ebaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:38:22, skipping insertion in model container [2020-07-01 11:38:22,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:38:22" (4/4) ... [2020-07-01 11:38:22,839 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:38:22,850 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:38:22,858 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:38:22,872 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:38:22,895 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:38:22,895 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:38:22,896 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:38:22,896 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:38:22,896 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:38:22,896 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:38:22,896 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:38:22,896 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:38:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 11:38:22,916 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:38:22,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 11:38:22,976 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:38:22,977 INFO L271 CegarLoopResult]: At program point L24-2(lines 24 27) the Hoare annotation is: true [2020-07-01 11:38:22,977 INFO L271 CegarLoopResult]: At program point L22-2(lines 22 29) the Hoare annotation is: true [2020-07-01 11:38:22,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:38:22 BasicIcfg [2020-07-01 11:38:22,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:38:22,986 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:38:22,986 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:38:22,990 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:38:22,991 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:38:22,991 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:38:22" (1/5) ... [2020-07-01 11:38:22,992 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e87f334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:38:22, skipping insertion in model container [2020-07-01 11:38:22,992 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:38:22,992 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:38:22" (2/5) ... [2020-07-01 11:38:22,992 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e87f334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:38:22, skipping insertion in model container [2020-07-01 11:38:22,993 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:38:22,993 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:38:22" (3/5) ... [2020-07-01 11:38:22,993 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e87f334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:38:22, skipping insertion in model container [2020-07-01 11:38:22,993 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:38:22,993 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:38:22" (4/5) ... [2020-07-01 11:38:22,994 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e87f334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:38:22, skipping insertion in model container [2020-07-01 11:38:22,994 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:38:22,994 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:38:22" (5/5) ... [2020-07-01 11:38:22,996 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:38:23,023 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:38:23,023 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:38:23,024 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:38:23,024 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:38:23,024 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:38:23,024 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:38:23,024 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:38:23,024 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:38:23,027 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:38:23,044 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:38:23,045 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:38:23,045 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:38:23,050 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:38:23,050 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:38:23,050 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:38:23,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:38:23,051 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:38:23,051 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:38:23,051 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:38:23,051 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:38:23,052 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:38:23,057 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [59] ULTIMATE.startENTRY-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~z~0_10 10000) (<= v_ULTIMATE.start_main_~y~0_15 10000) (<= 0 (+ v_ULTIMATE.start_main_~x~0_12 10000)) (<= v_ULTIMATE.start_main_~x~0_12 10000)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_7|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_15, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_4|, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_4|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 5#L22-2true [2020-07-01 11:38:23,057 INFO L796 eck$LassoCheckResult]: Loop: 5#L22-2true [48] L22-2-->L24-2: Formula: (and (<= 1 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_6 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~x~0] 4#L24-2true [58] L24-2-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~y~0_14) (= (+ v_ULTIMATE.start_main_~y~0_14 v_ULTIMATE.start_main_~x~0_11) v_ULTIMATE.start_main_~y~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_14, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 5#L22-2true [2020-07-01 11:38:23,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:23,063 INFO L82 PathProgramCache]: Analyzing trace with hash 90, now seen corresponding path program 1 times [2020-07-01 11:38:23,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:38:23,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589845464] [2020-07-01 11:38:23,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:38:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:23,143 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:38:23,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:23,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2507, now seen corresponding path program 1 times [2020-07-01 11:38:23,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:38:23,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776996044] [2020-07-01 11:38:23,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:38:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:23,160 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:38:23,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:23,162 INFO L82 PathProgramCache]: Analyzing trace with hash 88036, now seen corresponding path program 1 times [2020-07-01 11:38:23,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:38:23,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122206222] [2020-07-01 11:38:23,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:38:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:23,176 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:38:23,224 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:38:23,225 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:38:23,226 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:38:23,226 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:38:23,226 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:38:23,226 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:23,226 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:38:23,226 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:38:23,227 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:38:23,227 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:38:23,227 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:38:23,245 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 11:38:23,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:23,324 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:38:23,325 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:23,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:38:23,332 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:23,374 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:38:23,374 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:38:23,617 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:38:23,620 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:38:23,621 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:38:23,621 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:38:23,621 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:38:23,621 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:38:23,621 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:23,621 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:38:23,621 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:38:23,622 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:38:23,622 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:38:23,622 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:38:23,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:23,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:23,692 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:38:23,698 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:23,703 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:38:23,706 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:38:23,707 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:38:23,707 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:38:23,708 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:38:23,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:38:23,712 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:38:23,713 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:38:23,723 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:23,756 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:38:23,758 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:38:23,758 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:38:23,758 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:38:23,758 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:38:23,758 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:38:23,759 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:38:23,760 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:38:23,762 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-07-01 11:38:23,791 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:23,794 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:38:23,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:38:23,797 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:38:23,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:38:23,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:38:23,798 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-07-01 11:38:23,801 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-07-01 11:38:23,801 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:38:23,806 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:38:23,819 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-07-01 11:38:23,820 INFO L444 ModelExtractionUtils]: 4 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:23,826 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:38:23,826 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:38:23,826 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:38:23,827 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 11:38:23,861 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:38:23,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:38:23,908 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:38:23,909 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:38:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:38:23,921 WARN L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 11:38:23,922 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:38:23,936 INFO L477 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-01 11:38:23,938 INFO L477 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-01 11:38:23,942 INFO L477 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-01 11:38:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:38:24,281 INFO L98 LoopCannibalizer]: 12 predicates before loop cannibalization 12 predicates after loop cannibalization [2020-07-01 11:38:24,287 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 12 loop predicates [2020-07-01 11:38:24,289 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 11:38:24,982 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 19 states and 30 transitions. Complement of second has 18 states. [2020-07-01 11:38:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2020-07-01 11:38:24,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:38:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 19 transitions. [2020-07-01 11:38:24,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 11:38:24,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:38:25,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:38:25,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:38:25,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 19 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 11:38:25,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:38:25,008 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 30 transitions. [2020-07-01 11:38:25,009 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2020-07-01 11:38:25,013 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 12 states and 18 transitions. [2020-07-01 11:38:25,014 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-07-01 11:38:25,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-07-01 11:38:25,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 18 transitions. [2020-07-01 11:38:25,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:38:25,015 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-07-01 11:38:25,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 18 transitions. [2020-07-01 11:38:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2020-07-01 11:38:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 11:38:25,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-07-01 11:38:25,043 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-07-01 11:38:25,043 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-07-01 11:38:25,043 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:38:25,044 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-07-01 11:38:25,044 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:38:25,044 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:38:25,044 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:38:25,045 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:38:25,045 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 11:38:25,046 INFO L794 eck$LassoCheckResult]: Stem: 97#ULTIMATE.startENTRY [59] ULTIMATE.startENTRY-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~z~0_10 10000) (<= v_ULTIMATE.start_main_~y~0_15 10000) (<= 0 (+ v_ULTIMATE.start_main_~x~0_12 10000)) (<= v_ULTIMATE.start_main_~x~0_12 10000)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_7|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_15, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_4|, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_4|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 98#L22-2 [48] L22-2-->L24-2: Formula: (and (<= 1 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_6 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~x~0] 99#L24-2 [40] L24-2-->L24-2: Formula: (and (= (+ v_ULTIMATE.start_main_~x~0_9 1) v_ULTIMATE.start_main_~x~0_8) (= (+ v_ULTIMATE.start_main_~z~0_7 1) v_ULTIMATE.start_main_~z~0_8) (< v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~z~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_2|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 100#L24-2 [2020-07-01 11:38:25,046 INFO L796 eck$LassoCheckResult]: Loop: 100#L24-2 [40] L24-2-->L24-2: Formula: (and (= (+ v_ULTIMATE.start_main_~x~0_9 1) v_ULTIMATE.start_main_~x~0_8) (= (+ v_ULTIMATE.start_main_~z~0_7 1) v_ULTIMATE.start_main_~z~0_8) (< v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~z~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_2|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 100#L24-2 [2020-07-01 11:38:25,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:25,046 INFO L82 PathProgramCache]: Analyzing trace with hash 88018, now seen corresponding path program 1 times [2020-07-01 11:38:25,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:38:25,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28686188] [2020-07-01 11:38:25,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:38:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:25,060 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:38:25,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:25,061 INFO L82 PathProgramCache]: Analyzing trace with hash 71, now seen corresponding path program 1 times [2020-07-01 11:38:25,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:38:25,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623255750] [2020-07-01 11:38:25,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:38:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:25,068 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:38:25,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:25,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2728598, now seen corresponding path program 2 times [2020-07-01 11:38:25,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:38:25,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767947086] [2020-07-01 11:38:25,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:38:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:25,085 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:38:25,102 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:38:25,102 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:38:25,102 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:38:25,102 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:38:25,102 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:38:25,102 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:25,103 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:38:25,103 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:38:25,103 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:38:25,103 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:38:25,103 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:38:25,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:25,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:25,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:25,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:25,153 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:38:25,153 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:25,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:38:25,158 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:38:25,163 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:38:25,163 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:25,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:38:25,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:38:25,199 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:38:25,199 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4=0} Honda state: {ULTIMATE.start_main_#t~post4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:25,231 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:38:25,232 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:25,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:38:25,268 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:38:25,526 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:38:25,529 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:38:25,529 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:38:25,530 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:38:25,530 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:38:25,530 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:38:25,530 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:25,530 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:38:25,530 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:38:25,530 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:38:25,530 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:38:25,531 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:38:25,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:25,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:25,545 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 11:38:25,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:25,591 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:38:25,591 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:25,594 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:38:25,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:38:25,596 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:38:25,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:38:25,597 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:38:25,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:38:25,598 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:38:25,598 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:38:25,600 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:25,634 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:38:25,636 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:38:25,636 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:38:25,636 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:38:25,636 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:38:25,636 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:38:25,637 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:38:25,637 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:38:25,639 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:25,674 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:38:25,676 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:38:25,676 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:38:25,676 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:38:25,676 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:38:25,676 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:38:25,679 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:38:25,679 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:38:25,682 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:38:25,687 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 11:38:25,688 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:25,691 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:38:25,691 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:38:25,691 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:38:25,691 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2020-07-01 11:38:25,723 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:38:25,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:38:25,743 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:38:25,744 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:38:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:38:25,750 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:38:25,751 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:38:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:38:25,751 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 11:38:25,752 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 1 loop predicates [2020-07-01 11:38:25,752 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-07-01 11:38:25,761 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 10 states and 15 transitions. Complement of second has 2 states. [2020-07-01 11:38:25,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-07-01 11:38:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 11:38:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 6 transitions. [2020-07-01 11:38:25,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2020-07-01 11:38:25,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:38:25,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2020-07-01 11:38:25,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:38:25,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:38:25,764 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:38:25,764 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 15 transitions. [2020-07-01 11:38:25,765 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 11:38:25,766 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 15 transitions. [2020-07-01 11:38:25,766 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 11:38:25,766 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 11:38:25,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2020-07-01 11:38:25,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:38:25,767 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-07-01 11:38:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2020-07-01 11:38:25,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-07-01 11:38:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-01 11:38:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2020-07-01 11:38:25,769 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-07-01 11:38:25,769 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-07-01 11:38:25,769 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:38:25,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2020-07-01 11:38:25,770 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:38:25,770 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:38:25,770 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:38:25,771 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:38:25,771 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:38:25,771 INFO L794 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY [59] ULTIMATE.startENTRY-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~z~0_10 10000) (<= v_ULTIMATE.start_main_~y~0_15 10000) (<= 0 (+ v_ULTIMATE.start_main_~x~0_12 10000)) (<= v_ULTIMATE.start_main_~x~0_12 10000)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_7|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_15, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_4|, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_4|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 143#L22-2 [48] L22-2-->L24-2: Formula: (and (<= 1 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_6 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~x~0] 144#L24-2 [40] L24-2-->L24-2: Formula: (and (= (+ v_ULTIMATE.start_main_~x~0_9 1) v_ULTIMATE.start_main_~x~0_8) (= (+ v_ULTIMATE.start_main_~z~0_7 1) v_ULTIMATE.start_main_~z~0_8) (< v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~z~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_2|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 145#L24-2 [2020-07-01 11:38:25,772 INFO L796 eck$LassoCheckResult]: Loop: 145#L24-2 [58] L24-2-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~y~0_14) (= (+ v_ULTIMATE.start_main_~y~0_14 v_ULTIMATE.start_main_~x~0_11) v_ULTIMATE.start_main_~y~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_14, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 147#L22-2 [48] L22-2-->L24-2: Formula: (and (<= 1 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_6 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~x~0] 148#L24-2 [40] L24-2-->L24-2: Formula: (and (= (+ v_ULTIMATE.start_main_~x~0_9 1) v_ULTIMATE.start_main_~x~0_8) (= (+ v_ULTIMATE.start_main_~z~0_7 1) v_ULTIMATE.start_main_~z~0_8) (< v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~z~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_2|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 145#L24-2 [2020-07-01 11:38:25,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:25,772 INFO L82 PathProgramCache]: Analyzing trace with hash 88018, now seen corresponding path program 3 times [2020-07-01 11:38:25,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:38:25,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546599645] [2020-07-01 11:38:25,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:38:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:25,783 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:38:25,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:25,784 INFO L82 PathProgramCache]: Analyzing trace with hash 87057, now seen corresponding path program 1 times [2020-07-01 11:38:25,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:38:25,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114142457] [2020-07-01 11:38:25,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:38:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:25,795 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:38:25,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:25,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1672765792, now seen corresponding path program 1 times [2020-07-01 11:38:25,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:38:25,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403582047] [2020-07-01 11:38:25,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:38:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:25,815 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:38:25,843 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:38:25,844 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:38:25,844 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:38:25,844 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:38:25,844 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:38:25,844 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:25,844 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:38:25,844 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:38:25,845 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:38:25,845 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:38:25,845 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:38:25,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:25,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:25,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:25,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:25,926 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:38:25,926 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/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 11:38:25,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:38:25,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:38:25,934 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:38:25,935 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4=0} Honda state: {ULTIMATE.start_main_#t~post4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 11:38:25,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:38:25,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:38:25,970 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:38:25,970 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3=0} Honda state: {ULTIMATE.start_main_#t~post3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:26,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:38:26,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:38:26,005 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:38:26,005 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:26,037 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:38:26,037 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:26,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:38:26,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:38:26,381 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:38:26,383 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:38:26,383 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:38:26,384 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:38:26,384 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:38:26,384 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:38:26,384 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:26,384 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:38:26,384 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:38:26,384 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:38:26,384 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:38:26,385 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:38:26,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:26,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:26,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:26,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:26,446 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:38:26,447 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:26,449 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:38:26,451 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:38:26,451 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:38:26,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:38:26,452 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:38:26,452 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:38:26,452 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:38:26,453 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:38:26,454 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 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 11:38:26,486 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:38:26,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:38:26,488 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:38:26,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:38:26,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:38:26,489 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:38:26,489 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:38:26,489 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:38:26,491 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 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 11:38:26,522 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:38:26,524 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:38:26,524 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:38:26,525 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:38:26,525 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:38:26,525 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:38:26,526 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:38:26,526 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:38:26,527 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 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 11:38:26,559 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:38:26,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:38:26,561 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:38:26,561 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:38:26,561 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:38:26,561 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:38:26,563 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:38:26,564 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:38:26,567 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:38:26,572 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 11:38:26,572 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/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 11:38:26,574 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:38:26,574 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:38:26,575 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:38:26,575 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2020-07-01 11:38:26,604 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:38:26,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:38:26,621 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:38:26,621 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:38:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:38:26,626 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:38:26,627 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:38:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:38:26,644 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:38:26,645 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 11:38:26,645 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-07-01 11:38:26,674 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 18 states and 33 transitions. Complement of second has 12 states. [2020-07-01 11:38:26,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 2 accepting loop states [2020-07-01 11:38:26,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:38:26,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-07-01 11:38:26,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 3 letters. Loop has 3 letters. [2020-07-01 11:38:26,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:38:26,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 6 letters. Loop has 3 letters. [2020-07-01 11:38:26,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:38:26,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 3 letters. Loop has 6 letters. [2020-07-01 11:38:26,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:38:26,677 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 33 transitions. [2020-07-01 11:38:26,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:38:26,681 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 33 transitions. [2020-07-01 11:38:26,681 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 11:38:26,682 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 11:38:26,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 33 transitions. [2020-07-01 11:38:26,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:38:26,682 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 33 transitions. [2020-07-01 11:38:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 33 transitions. [2020-07-01 11:38:26,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2020-07-01 11:38:26,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-01 11:38:26,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 24 transitions. [2020-07-01 11:38:26,685 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 24 transitions. [2020-07-01 11:38:26,685 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 24 transitions. [2020-07-01 11:38:26,685 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 11:38:26,685 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 24 transitions. [2020-07-01 11:38:26,686 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:38:26,686 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:38:26,686 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:38:26,687 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:38:26,687 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:38:26,687 INFO L794 eck$LassoCheckResult]: Stem: 221#ULTIMATE.startENTRY [59] ULTIMATE.startENTRY-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~z~0_10 10000) (<= v_ULTIMATE.start_main_~y~0_15 10000) (<= 0 (+ v_ULTIMATE.start_main_~x~0_12 10000)) (<= v_ULTIMATE.start_main_~x~0_12 10000)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_7|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_15, ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_4|, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_4|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 222#L22-2 [48] L22-2-->L24-2: Formula: (and (<= 1 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_6 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~x~0] 226#L24-2 [40] L24-2-->L24-2: Formula: (and (= (+ v_ULTIMATE.start_main_~x~0_9 1) v_ULTIMATE.start_main_~x~0_8) (= (+ v_ULTIMATE.start_main_~z~0_7 1) v_ULTIMATE.start_main_~z~0_8) (< v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~z~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_2|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 231#L24-2 [58] L24-2-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~y~0_14) (= (+ v_ULTIMATE.start_main_~y~0_14 v_ULTIMATE.start_main_~x~0_11) v_ULTIMATE.start_main_~y~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_14, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 224#L22-2 [2020-07-01 11:38:26,687 INFO L796 eck$LassoCheckResult]: Loop: 224#L22-2 [48] L22-2-->L24-2: Formula: (and (<= 1 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_6 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_#t~post3=|v_ULTIMATE.start_main_#t~post3_2|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post3, ULTIMATE.start_main_~x~0] 223#L24-2 [58] L24-2-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~y~0_14) (= (+ v_ULTIMATE.start_main_~y~0_14 v_ULTIMATE.start_main_~x~0_11) v_ULTIMATE.start_main_~y~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_14, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 224#L22-2 [2020-07-01 11:38:26,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:26,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2728616, now seen corresponding path program 2 times [2020-07-01 11:38:26,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:38:26,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533648322] [2020-07-01 11:38:26,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:38:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:26,700 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:38:26,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:26,701 INFO L82 PathProgramCache]: Analyzing trace with hash 2507, now seen corresponding path program 2 times [2020-07-01 11:38:26,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:38:26,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242387193] [2020-07-01 11:38:26,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:38:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:26,707 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:38:26,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:26,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1672765774, now seen corresponding path program 3 times [2020-07-01 11:38:26,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:38:26,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869096754] [2020-07-01 11:38:26,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:38:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:38:26,720 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:38:26,735 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:38:26,736 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:38:26,736 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:38:26,736 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:38:26,736 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:38:26,736 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:26,736 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:38:26,736 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:38:26,736 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 11:38:26,737 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:38:26,737 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:38:26,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:26,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:26,773 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:38:26,773 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:26,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:38:26,780 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:38:26,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:38:26,817 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:38:27,078 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:38:27,080 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:38:27,080 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:38:27,080 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:38:27,081 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:38:27,081 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:38:27,081 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:27,081 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:38:27,081 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:38:27,081 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 11:38:27,081 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:38:27,081 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:38:27,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:27,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:38:27,117 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:38:27,118 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:27,120 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:38:27,122 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:38:27,122 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:38:27,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:38:27,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:38:27,123 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:38:27,124 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:38:27,124 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:38:27,127 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:27,158 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:38:27,160 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:38:27,160 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:38:27,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:38:27,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:38:27,161 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:38:27,162 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:38:27,162 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:38:27,164 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-07-01 11:38:27,193 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:27,195 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:38:27,198 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:38:27,198 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:38:27,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:38:27,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:38:27,199 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-07-01 11:38:27,201 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-07-01 11:38:27,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:38:27,205 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:38:27,213 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-07-01 11:38:27,213 INFO L444 ModelExtractionUtils]: 4 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:38:27,217 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:38:27,217 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:38:27,217 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:38:27,217 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 11:38:27,247 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:38:27,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:38:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:38:27,268 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:38:27,268 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:38:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:38:27,273 WARN L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 11:38:27,273 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:38:27,276 INFO L477 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-01 11:38:27,277 INFO L477 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-01 11:38:27,279 INFO L477 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-01 11:38:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:38:27,455 INFO L98 LoopCannibalizer]: 12 predicates before loop cannibalization 12 predicates after loop cannibalization [2020-07-01 11:38:27,455 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 12 loop predicates [2020-07-01 11:38:27,455 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 13 states and 24 transitions. cyclomatic complexity: 15 Second operand 3 states. [2020-07-01 11:38:27,933 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 13 states and 24 transitions. cyclomatic complexity: 15. Second operand 3 states. Result 128 states and 219 transitions. Complement of second has 46 states. [2020-07-01 11:38:27,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2020-07-01 11:38:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:38:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 19 transitions. [2020-07-01 11:38:27,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 19 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 11:38:27,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:38:27,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 19 transitions. Stem has 6 letters. Loop has 2 letters. [2020-07-01 11:38:27,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:38:27,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 19 transitions. Stem has 4 letters. Loop has 4 letters. [2020-07-01 11:38:27,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:38:27,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 219 transitions. [2020-07-01 11:38:27,942 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:38:27,942 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 0 states and 0 transitions. [2020-07-01 11:38:27,943 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:38:27,943 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:38:27,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:38:27,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:38:27,943 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:38:27,943 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:38:27,943 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:38:27,943 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 11:38:27,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:38:27,944 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:38:27,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:38:27,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:38:27 BasicIcfg [2020-07-01 11:38:27,950 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:38:27,952 INFO L168 Benchmark]: Toolchain (without parser) took 5818.40 ms. Allocated memory was 514.9 MB in the beginning and 632.8 MB in the end (delta: 118.0 MB). Free memory was 438.9 MB in the beginning and 525.9 MB in the end (delta: -87.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 50.3 GB. [2020-07-01 11:38:27,952 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.6 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:38:27,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.85 ms. Allocated memory was 514.9 MB in the beginning and 564.7 MB in the end (delta: 49.8 MB). Free memory was 438.9 MB in the beginning and 532.7 MB in the end (delta: -93.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. [2020-07-01 11:38:27,954 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.43 ms. Allocated memory is still 564.7 MB. Free memory was 532.7 MB in the beginning and 531.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:38:27,954 INFO L168 Benchmark]: Boogie Preprocessor took 20.38 ms. Allocated memory is still 564.7 MB. Free memory was 531.1 MB in the beginning and 530.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:38:27,955 INFO L168 Benchmark]: RCFGBuilder took 263.11 ms. Allocated memory is still 564.7 MB. Free memory was 530.0 MB in the beginning and 516.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 50.3 GB. [2020-07-01 11:38:27,955 INFO L168 Benchmark]: BlockEncodingV2 took 76.88 ms. Allocated memory is still 564.7 MB. Free memory was 516.2 MB in the beginning and 510.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 50.3 GB. [2020-07-01 11:38:27,956 INFO L168 Benchmark]: TraceAbstraction took 155.59 ms. Allocated memory is still 564.7 MB. Free memory was 509.7 MB in the beginning and 501.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 50.3 GB. [2020-07-01 11:38:27,957 INFO L168 Benchmark]: BuchiAutomizer took 4963.37 ms. Allocated memory was 564.7 MB in the beginning and 632.8 MB in the end (delta: 68.2 MB). Free memory was 501.2 MB in the beginning and 525.9 MB in the end (delta: -24.6 MB). Peak memory consumption was 43.5 MB. Max. memory is 50.3 GB. [2020-07-01 11:38:27,960 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 3 locations, 4 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.6 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 297.85 ms. Allocated memory was 514.9 MB in the beginning and 564.7 MB in the end (delta: 49.8 MB). Free memory was 438.9 MB in the beginning and 532.7 MB in the end (delta: -93.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.43 ms. Allocated memory is still 564.7 MB. Free memory was 532.7 MB in the beginning and 531.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.38 ms. Allocated memory is still 564.7 MB. Free memory was 531.1 MB in the beginning and 530.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 263.11 ms. Allocated memory is still 564.7 MB. Free memory was 530.0 MB in the beginning and 516.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 76.88 ms. Allocated memory is still 564.7 MB. Free memory was 516.2 MB in the beginning and 510.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 50.3 GB. * TraceAbstraction took 155.59 ms. Allocated memory is still 564.7 MB. Free memory was 509.7 MB in the beginning and 501.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4963.37 ms. Allocated memory was 564.7 MB in the beginning and 632.8 MB in the end (delta: 68.2 MB). Free memory was 501.2 MB in the beginning and 525.9 MB in the end (delta: -24.6 MB). Peak memory consumption was 43.5 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: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 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=3occurred 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 0 deterministic, 4 nondeterministic). One nondeterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y) and consists of 10 locations. One nondeterministic module has affine ranking function -1 * y + z and consists of 2 locations. One nondeterministic module has affine ranking function z and consists of 5 locations. One nondeterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y) and consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.9s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 2.8s. Construction of modules took 0.1s. Büchi inclusion checks took 1.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 3. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 17 SDtfs, 38 SDslu, 1 SDs, 0 SdLazy, 91 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp91 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf93 smp100 dnf100 smp100 tf108 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 34ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 3 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:38:18.780 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp/BenchExec_run_FBC2uG/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:38:28.194 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check