/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 13:12:06,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 13:12:06,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 13:12:06,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 13:12:06,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 13:12:06,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 13:12:06,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 13:12:06,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 13:12:06,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 13:12:06,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 13:12:06,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 13:12:06,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 13:12:06,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 13:12:06,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 13:12:06,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 13:12:06,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 13:12:06,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 13:12:06,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 13:12:06,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 13:12:06,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 13:12:06,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 13:12:06,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 13:12:06,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 13:12:06,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 13:12:06,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 13:12:06,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 13:12:06,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 13:12:06,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 13:12:06,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 13:12:06,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 13:12:06,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 13:12:06,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 13:12:06,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 13:12:06,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 13:12:06,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 13:12:06,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 13:12:06,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 13:12:06,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 13:12:06,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 13:12:06,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 13:12:06,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 13:12:06,918 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 13:12:06,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 13:12:06,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 13:12:06,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 13:12:06,934 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 13:12:06,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 13:12:06,934 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:12:06,935 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 13:12:06,935 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 13:12:06,935 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 13:12:06,935 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 13:12:06,935 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 13:12:06,936 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 13:12:06,936 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 13:12:06,936 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 13:12:06,936 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:12:06,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 13:12:06,937 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 13:12:06,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 13:12:06,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 13:12:06,937 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 13:12:06,937 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 13:12:06,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 13:12:06,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 13:12:06,938 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 13:12:06,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 13:12:06,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 13:12:06,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 13:12:06,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 13:12:06,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 13:12:07,102 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 13:12:07,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 13:12:07,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 13:12:07,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 13:12:07,121 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 13:12:07,122 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 13:12:07,352 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_AfxnOR/tmp/c9a5c788ec994abaa9c1edae56888f34/FLAGa651d3e64 [2020-07-01 13:12:07,678 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 13:12:07,679 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 13:12:07,686 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_AfxnOR/tmp/c9a5c788ec994abaa9c1edae56888f34/FLAGa651d3e64 [2020-07-01 13:12:08,113 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_AfxnOR/tmp/c9a5c788ec994abaa9c1edae56888f34 [2020-07-01 13:12:08,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 13:12:08,125 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 13:12:08,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 13:12:08,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 13:12:08,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 13:12:08,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:12:08" (1/1) ... [2020-07-01 13:12:08,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408ab4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:12:08, skipping insertion in model container [2020-07-01 13:12:08,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:12:08" (1/1) ... [2020-07-01 13:12:08,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 13:12:08,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 13:12:08,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:12:08,376 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 13:12:08,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:12:08,405 INFO L208 MainTranslator]: Completed translation [2020-07-01 13:12:08,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:12:08 WrapperNode [2020-07-01 13:12:08,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 13:12:08,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 13:12:08,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 13:12:08,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 13:12:08,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:12:08" (1/1) ... [2020-07-01 13:12:08,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:12:08" (1/1) ... [2020-07-01 13:12:08,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 13:12:08,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 13:12:08,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 13:12:08,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 13:12:08,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:12:08" (1/1) ... [2020-07-01 13:12:08,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:12:08" (1/1) ... [2020-07-01 13:12:08,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:12:08" (1/1) ... [2020-07-01 13:12:08,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:12:08" (1/1) ... [2020-07-01 13:12:08,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:12:08" (1/1) ... [2020-07-01 13:12:08,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:12:08" (1/1) ... [2020-07-01 13:12:08,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:12:08" (1/1) ... [2020-07-01 13:12:08,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 13:12:08,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 13:12:08,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 13:12:08,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 13:12:08,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:12:08" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 13:12:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 13:12:08,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 13:12:08,673 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 13:12:08,674 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-01 13:12:08,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:12:08 BoogieIcfgContainer [2020-07-01 13:12:08,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 13:12:08,678 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 13:12:08,678 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 13:12:08,680 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 13:12:08,681 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:12:08" (1/1) ... [2020-07-01 13:12:08,693 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 10 edges [2020-07-01 13:12:08,695 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 13:12:08,695 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 13:12:08,696 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 13:12:08,696 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:12:08,698 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 13:12:08,699 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 13:12:08,699 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 13:12:08,712 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 13:12:08,719 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 13:12:08,724 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-07-01 13:12:08,726 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:12:08,740 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 13:12:08,741 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 13:12:08,743 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 13:12:08,743 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:12:08,743 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 13:12:08,744 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 13:12:08,744 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-07-01 13:12:08,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:12:08 BasicIcfg [2020-07-01 13:12:08,744 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 13:12:08,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 13:12:08,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 13:12:08,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 13:12:08,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 01:12:08" (1/4) ... [2020-07-01 13:12:08,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ff78e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:12:08, skipping insertion in model container [2020-07-01 13:12:08,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:12:08" (2/4) ... [2020-07-01 13:12:08,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ff78e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:12:08, skipping insertion in model container [2020-07-01 13:12:08,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:12:08" (3/4) ... [2020-07-01 13:12:08,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ff78e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:12:08, skipping insertion in model container [2020-07-01 13:12:08,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:12:08" (4/4) ... [2020-07-01 13:12:08,753 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:12:08,763 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 13:12:08,770 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 13:12:08,784 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 13:12:08,806 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 13:12:08,806 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 13:12:08,806 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:12:08,807 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:12:08,807 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:12:08,807 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 13:12:08,807 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:12:08,807 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 13:12:08,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 13:12:08,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 13:12:08,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 13:12:08,879 INFO L271 CegarLoopResult]: At program point L19-2(lines 19 22) the Hoare annotation is: true [2020-07-01 13:12:08,879 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 13:12:08,880 INFO L268 CegarLoopResult]: For program point L23-1(lines 13 28) no Hoare annotation was computed. [2020-07-01 13:12:08,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:12:08 BasicIcfg [2020-07-01 13:12:08,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 13:12:08,889 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 13:12:08,889 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 13:12:08,893 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 13:12:08,894 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:12:08,894 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 01:12:08" (1/5) ... [2020-07-01 13:12:08,895 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29644462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:12:08, skipping insertion in model container [2020-07-01 13:12:08,895 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:12:08,895 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:12:08" (2/5) ... [2020-07-01 13:12:08,896 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29644462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:12:08, skipping insertion in model container [2020-07-01 13:12:08,896 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:12:08,896 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:12:08" (3/5) ... [2020-07-01 13:12:08,896 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29644462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:12:08, skipping insertion in model container [2020-07-01 13:12:08,897 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:12:08,897 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:12:08" (4/5) ... [2020-07-01 13:12:08,897 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29644462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:12:08, skipping insertion in model container [2020-07-01 13:12:08,897 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:12:08,897 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:12:08" (5/5) ... [2020-07-01 13:12:08,899 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:12:08,928 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 13:12:08,928 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 13:12:08,928 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:12:08,929 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:12:08,929 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:12:08,929 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 13:12:08,929 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:12:08,929 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 13:12:08,932 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 13:12:08,949 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-07-01 13:12:08,950 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:12:08,950 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:12:08,955 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 13:12:08,955 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 13:12:08,955 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 13:12:08,955 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 13:12:08,956 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-07-01 13:12:08,956 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:12:08,956 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:12:08,956 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 13:12:08,956 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 13:12:08,961 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [30] ULTIMATE.startENTRY-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~m~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|) (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~x~0] 5#L19-2true [2020-07-01 13:12:08,961 INFO L796 eck$LassoCheckResult]: Loop: 5#L19-2true [37] L19-2-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_10 (+ v_ULTIMATE.start_main_~x~0_11 1)) (< v_ULTIMATE.start_main_~x~0_11 v_ULTIMATE.start_main_~n~0_7) (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 1))) InVars {ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~x~0] 5#L19-2true [2020-07-01 13:12:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:12:08,968 INFO L82 PathProgramCache]: Analyzing trace with hash 61, now seen corresponding path program 1 times [2020-07-01 13:12:08,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:12:08,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035546772] [2020-07-01 13:12:08,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:12:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:12:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:12:09,048 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:12:09,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:12:09,050 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2020-07-01 13:12:09,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:12:09,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206261601] [2020-07-01 13:12:09,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:12:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:12:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:12:09,066 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:12:09,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:12:09,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1928, now seen corresponding path program 1 times [2020-07-01 13:12:09,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:12:09,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823283316] [2020-07-01 13:12:09,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:12:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:12:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:12:09,082 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:12:09,128 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:12:09,129 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:12:09,129 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:12:09,129 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:12:09,130 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:12:09,130 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:12:09,130 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:12:09,130 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:12:09,130 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 13:12:09,130 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:12:09,131 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:12:09,150 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 13:12:09,166 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 13:12:09,171 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 13:12:09,176 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 13:12:09,291 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:12:09,292 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 13:12:09,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:12:09,297 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 13:12:09,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:12:09,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:12:09,547 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 13:12:09,550 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:12:09,550 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:12:09,550 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:12:09,550 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:12:09,551 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 13:12:09,551 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:12:09,551 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:12:09,551 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:12:09,551 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 13:12:09,551 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:12:09,551 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:12:09,553 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 13:12:09,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:12:09,570 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 13:12:09,574 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 13:12:09,637 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:12:09,643 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 13:12:09,648 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 13:12:09,651 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:12:09,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:12:09,652 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:12:09,652 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:12:09,652 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:12:09,655 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:12:09,655 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:12:09,659 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 13:12:09,667 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 13:12:09,667 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/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 13:12:09,671 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 13:12:09,671 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 13:12:09,672 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 13:12:09,673 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 13:12:09,706 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 13:12:09,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:12:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:12:09,748 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 13:12:09,749 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:12:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:12:09,761 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 13:12:09,772 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:12:09,773 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 13:12:09,785 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 13:12:09,790 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 13:12:09,792 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 2 states. [2020-07-01 13:12:09,824 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 2 states. Result 6 states and 10 transitions. Complement of second has 4 states. [2020-07-01 13:12:09,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 13:12:09,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 13:12:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-07-01 13:12:09,829 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 1 letters. [2020-07-01 13:12:09,830 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:12:09,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-01 13:12:09,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:12:09,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 13:12:09,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:12:09,838 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 10 transitions. [2020-07-01 13:12:09,839 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 13:12:09,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 5 states and 7 transitions. [2020-07-01 13:12:09,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-07-01 13:12:09,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-07-01 13:12:09,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 7 transitions. [2020-07-01 13:12:09,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 13:12:09,845 INFO L688 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-07-01 13:12:09,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 7 transitions. [2020-07-01 13:12:09,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 4. [2020-07-01 13:12:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 13:12:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-07-01 13:12:09,873 INFO L711 BuchiCegarLoop]: Abstraction has 4 states and 6 transitions. [2020-07-01 13:12:09,873 INFO L591 BuchiCegarLoop]: Abstraction has 4 states and 6 transitions. [2020-07-01 13:12:09,873 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 13:12:09,873 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 6 transitions. [2020-07-01 13:12:09,874 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 13:12:09,874 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:12:09,874 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:12:09,875 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:12:09,875 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 13:12:09,875 INFO L794 eck$LassoCheckResult]: Stem: 37#ULTIMATE.startENTRY [30] ULTIMATE.startENTRY-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~m~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|) (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~x~0] 38#L19-2 [39] L19-2-->L23-1: Formula: (>= v_ULTIMATE.start_main_~x~0_9 v_ULTIMATE.start_main_~n~0_6) InVars {ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[] 39#L23-1 [2020-07-01 13:12:09,875 INFO L796 eck$LassoCheckResult]: Loop: 39#L23-1 [34] L23-1-->L23-1: Formula: (and (< v_ULTIMATE.start_main_~x~0_8 v_ULTIMATE.start_main_~m~0_7) (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1)) (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_8 1))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~x~0] 39#L23-1 [2020-07-01 13:12:09,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:12:09,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1930, now seen corresponding path program 1 times [2020-07-01 13:12:09,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:12:09,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240270114] [2020-07-01 13:12:09,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:12:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:12:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:12:09,885 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:12:09,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:12:09,886 INFO L82 PathProgramCache]: Analyzing trace with hash 65, now seen corresponding path program 1 times [2020-07-01 13:12:09,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:12:09,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352173902] [2020-07-01 13:12:09,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:12:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:12:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:12:09,894 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:12:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:12:09,895 INFO L82 PathProgramCache]: Analyzing trace with hash 59864, now seen corresponding path program 1 times [2020-07-01 13:12:09,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:12:09,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781091006] [2020-07-01 13:12:09,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:12:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:12:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:12:09,908 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:12:09,932 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:12:09,932 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:12:09,932 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:12:09,932 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:12:09,933 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:12:09,933 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:12:09,933 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:12:09,933 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:12:09,933 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 13:12:09,933 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:12:09,933 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:12:09,935 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 13:12:09,940 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 13:12:09,952 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 13:12:09,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:12:10,034 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:12:10,034 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:12:10,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:12:10,046 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:12:10,051 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:12:10,051 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:12:10,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:12:10,084 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 13:12:10,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:12:10,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:12:10,305 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 13:12:10,307 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:12:10,307 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:12:10,308 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:12:10,308 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:12:10,308 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 13:12:10,308 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:12:10,308 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:12:10,309 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:12:10,309 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 13:12:10,309 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:12:10,309 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:12:10,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:12:10,318 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 13:12:10,326 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 13:12:10,330 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 13:12:10,398 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:12:10,399 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:12:10,406 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 13:12:10,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:12:10,409 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:12:10,409 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:12:10,409 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:12:10,414 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 13:12:10,414 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 13:12:10,420 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:12:10,458 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 13:12:10,460 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:12:10,460 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:12:10,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:12:10,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:12:10,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:12:10,463 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:12:10,463 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:12:10,466 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 13:12:10,474 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 13:12:10,474 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:12:10,478 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 13:12:10,479 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 13:12:10,479 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 13:12:10,479 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 13:12:10,512 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 13:12:10,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:12:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:12:10,540 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 13:12:10,541 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:12:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:12:10,547 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 13:12:10,548 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:12:10,548 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 13:12:10,548 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 13:12:10,549 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 13:12:10,549 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states and 6 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-07-01 13:12:10,559 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states and 6 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 5 states and 7 transitions. Complement of second has 2 states. [2020-07-01 13:12:10,560 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 13:12:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 13:12:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 6 transitions. [2020-07-01 13:12:10,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-01 13:12:10,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:12:10,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2020-07-01 13:12:10,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:12:10,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 13:12:10,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:12:10,563 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5 states and 7 transitions. [2020-07-01 13:12:10,564 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 13:12:10,564 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5 states to 0 states and 0 transitions. [2020-07-01 13:12:10,564 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 13:12:10,564 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 13:12:10,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 13:12:10,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 13:12:10,564 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:12:10,565 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:12:10,565 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:12:10,565 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 13:12:10,565 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 13:12:10,565 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 13:12:10,565 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 13:12:10,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:12:10 BasicIcfg [2020-07-01 13:12:10,571 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 13:12:10,574 INFO L168 Benchmark]: Toolchain (without parser) took 2447.63 ms. Allocated memory was 649.6 MB in the beginning and 672.7 MB in the end (delta: 23.1 MB). Free memory was 561.2 MB in the beginning and 464.2 MB in the end (delta: 97.0 MB). Peak memory consumption was 120.1 MB. Max. memory is 50.3 GB. [2020-07-01 13:12:10,574 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 13:12:10,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.10 ms. Allocated memory was 649.6 MB in the beginning and 672.7 MB in the end (delta: 23.1 MB). Free memory was 561.2 MB in the beginning and 636.5 MB in the end (delta: -75.3 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. [2020-07-01 13:12:10,576 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.76 ms. Allocated memory is still 672.7 MB. Free memory was 636.5 MB in the beginning and 635.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 13:12:10,577 INFO L168 Benchmark]: Boogie Preprocessor took 19.23 ms. Allocated memory is still 672.7 MB. Free memory was 635.4 MB in the beginning and 634.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 13:12:10,577 INFO L168 Benchmark]: RCFGBuilder took 218.16 ms. Allocated memory is still 672.7 MB. Free memory was 634.3 MB in the beginning and 619.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 50.3 GB. [2020-07-01 13:12:10,578 INFO L168 Benchmark]: BlockEncodingV2 took 66.75 ms. Allocated memory is still 672.7 MB. Free memory was 619.8 MB in the beginning and 614.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 13:12:10,578 INFO L168 Benchmark]: TraceAbstraction took 142.76 ms. Allocated memory is still 672.7 MB. Free memory was 614.4 MB in the beginning and 605.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. [2020-07-01 13:12:10,579 INFO L168 Benchmark]: BuchiAutomizer took 1682.15 ms. Allocated memory is still 672.7 MB. Free memory was 605.8 MB in the beginning and 464.2 MB in the end (delta: 141.6 MB). Peak memory consumption was 141.6 MB. Max. memory is 50.3 GB. [2020-07-01 13:12:10,583 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 10 edges - StatisticsResult: Encoded RCFG 3 locations, 4 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 280.10 ms. Allocated memory was 649.6 MB in the beginning and 672.7 MB in the end (delta: 23.1 MB). Free memory was 561.2 MB in the beginning and 636.5 MB in the end (delta: -75.3 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 32.76 ms. Allocated memory is still 672.7 MB. Free memory was 636.5 MB in the beginning and 635.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.23 ms. Allocated memory is still 672.7 MB. Free memory was 635.4 MB in the beginning and 634.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 218.16 ms. Allocated memory is still 672.7 MB. Free memory was 634.3 MB in the beginning and 619.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 66.75 ms. Allocated memory is still 672.7 MB. Free memory was 619.8 MB in the beginning and 614.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 142.76 ms. Allocated memory is still 672.7 MB. Free memory was 614.4 MB in the beginning and 605.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1682.15 ms. Allocated memory is still 672.7 MB. Free memory was 605.8 MB in the beginning and 464.2 MB in the end (delta: 141.6 MB). Peak memory consumption was 141.6 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function n + -1 * x and consists of 3 locations. One nondeterministic module has affine ranking function m + -1 * x and consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 4 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 6 SDtfs, 9 SDslu, 0 SDs, 0 SdLazy, 8 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax179 hnf100 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 13:12:04.641 ----------------------------------------------- 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_AfxnOR/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 13:12:11.219 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check