/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 13:03:51,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 13:03:51,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 13:03:51,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 13:03:51,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 13:03:51,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 13:03:51,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 13:03:51,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 13:03:52,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 13:03:52,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 13:03:52,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 13:03:52,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 13:03:52,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 13:03:52,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 13:03:52,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 13:03:52,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 13:03:52,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 13:03:52,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 13:03:52,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 13:03:52,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 13:03:52,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 13:03:52,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 13:03:52,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 13:03:52,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 13:03:52,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 13:03:52,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 13:03:52,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 13:03:52,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 13:03:52,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 13:03:52,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 13:03:52,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 13:03:52,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 13:03:52,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 13:03:52,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 13:03:52,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 13:03:52,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 13:03:52,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 13:03:52,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 13:03:52,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 13:03:52,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 13:03:52,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 13:03:52,027 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 13:03:52,041 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 13:03:52,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 13:03:52,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 13:03:52,042 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 13:03:52,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 13:03:52,043 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:03:52,043 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 13:03:52,043 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 13:03:52,043 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 13:03:52,043 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 13:03:52,044 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 13:03:52,044 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 13:03:52,044 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 13:03:52,044 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 13:03:52,044 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:03:52,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 13:03:52,045 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 13:03:52,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 13:03:52,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 13:03:52,045 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 13:03:52,045 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 13:03:52,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 13:03:52,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 13:03:52,046 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 13:03:52,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 13:03:52,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 13:03:52,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 13:03:52,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 13:03:52,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 13:03:52,210 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 13:03:52,224 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 13:03:52,228 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 13:03:52,229 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 13:03:52,230 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 13:03:52,230 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 13:03:52,320 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_8lt3A1/tmp/d0232b1061bf414b99f6187be7a7b7ca/FLAG554d7178f [2020-07-01 13:03:52,647 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 13:03:52,648 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 13:03:52,654 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_8lt3A1/tmp/d0232b1061bf414b99f6187be7a7b7ca/FLAG554d7178f [2020-07-01 13:03:53,065 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_8lt3A1/tmp/d0232b1061bf414b99f6187be7a7b7ca [2020-07-01 13:03:53,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 13:03:53,078 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 13:03:53,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 13:03:53,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 13:03:53,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 13:03:53,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:03:53" (1/1) ... [2020-07-01 13:03:53,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b9a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:53, skipping insertion in model container [2020-07-01 13:03:53,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:03:53" (1/1) ... [2020-07-01 13:03:53,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 13:03:53,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 13:03:53,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:03:53,327 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 13:03:53,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:03:53,356 INFO L208 MainTranslator]: Completed translation [2020-07-01 13:03:53,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:53 WrapperNode [2020-07-01 13:03:53,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 13:03:53,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 13:03:53,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 13:03:53,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 13:03:53,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:53" (1/1) ... [2020-07-01 13:03:53,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:53" (1/1) ... [2020-07-01 13:03:53,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 13:03:53,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 13:03:53,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 13:03:53,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 13:03:53,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:53" (1/1) ... [2020-07-01 13:03:53,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:53" (1/1) ... [2020-07-01 13:03:53,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:53" (1/1) ... [2020-07-01 13:03:53,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:53" (1/1) ... [2020-07-01 13:03:53,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:53" (1/1) ... [2020-07-01 13:03:53,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:53" (1/1) ... [2020-07-01 13:03:53,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:53" (1/1) ... [2020-07-01 13:03:53,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 13:03:53,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 13:03:53,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 13:03:53,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 13:03:53,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:53" (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 13:03:53,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 13:03:53,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 13:03:53,617 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 13:03:53,617 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 13:03:53,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:03:53 BoogieIcfgContainer [2020-07-01 13:03:53,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 13:03:53,621 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 13:03:53,621 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 13:03:53,623 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 13:03:53,624 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:03:53" (1/1) ... [2020-07-01 13:03:53,636 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 10 edges [2020-07-01 13:03:53,637 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 13:03:53,638 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 13:03:53,639 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 13:03:53,639 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:03:53,641 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 13:03:53,642 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 13:03:53,642 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 13:03:53,656 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 13:03:53,670 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 13:03:53,674 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 13:03:53,676 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:03:53,688 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 13:03:53,690 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 13:03:53,691 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 13:03:53,692 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:03:53,692 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 13:03:53,692 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 13:03:53,692 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 6 edges [2020-07-01 13:03:53,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:03:53 BasicIcfg [2020-07-01 13:03:53,693 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 13:03:53,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 13:03:53,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 13:03:53,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 13:03:53,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 01:03:53" (1/4) ... [2020-07-01 13:03:53,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a85ada0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:03:53, skipping insertion in model container [2020-07-01 13:03:53,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:53" (2/4) ... [2020-07-01 13:03:53,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a85ada0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:03:53, skipping insertion in model container [2020-07-01 13:03:53,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:03:53" (3/4) ... [2020-07-01 13:03:53,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a85ada0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:03:53, skipping insertion in model container [2020-07-01 13:03:53,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:03:53" (4/4) ... [2020-07-01 13:03:53,702 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:03:53,712 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 13:03:53,720 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 13:03:53,733 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 13:03:53,756 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 13:03:53,756 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 13:03:53,757 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:03:53,757 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:03:53,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:03:53,757 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 13:03:53,757 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:03:53,757 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 13:03:53,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-07-01 13:03:53,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 13:03:53,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-07-01 13:03:53,832 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 13:03:53,832 INFO L268 CegarLoopResult]: For program point L13(lines 13 15) no Hoare annotation was computed. [2020-07-01 13:03:53,832 INFO L268 CegarLoopResult]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2020-07-01 13:03:53,833 INFO L271 CegarLoopResult]: At program point L12-2(lines 12 18) the Hoare annotation is: true [2020-07-01 13:03:53,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:03:53 BasicIcfg [2020-07-01 13:03:53,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 13:03:53,842 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 13:03:53,843 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 13:03:53,846 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 13:03:53,847 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:03:53,847 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 01:03:53" (1/5) ... [2020-07-01 13:03:53,848 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1378e6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:03:53, skipping insertion in model container [2020-07-01 13:03:53,848 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:03:53,848 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:03:53" (2/5) ... [2020-07-01 13:03:53,849 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1378e6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:03:53, skipping insertion in model container [2020-07-01 13:03:53,849 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:03:53,849 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:03:53" (3/5) ... [2020-07-01 13:03:53,849 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1378e6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:03:53, skipping insertion in model container [2020-07-01 13:03:53,849 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:03:53,849 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:03:53" (4/5) ... [2020-07-01 13:03:53,850 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1378e6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:03:53, skipping insertion in model container [2020-07-01 13:03:53,850 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:03:53,850 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:03:53" (5/5) ... [2020-07-01 13:03:53,852 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:03:53,880 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 13:03:53,881 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 13:03:53,881 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:03:53,881 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:03:53,881 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:03:53,881 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 13:03:53,881 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:03:53,881 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 13:03:53,885 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 13:03:53,902 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 13:03:53,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:03:53,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:03:53,907 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 13:03:53,907 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 13:03:53,907 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 13:03:53,908 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 13:03:53,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 13:03:53,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:03:53,908 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:03:53,909 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 13:03:53,909 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 13:03:53,914 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [28] ULTIMATE.startENTRY-->L12-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~flag~0_1 1) (= v_ULTIMATE.start_main_~c~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~flag~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 3#L12-2true [2020-07-01 13:03:53,914 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true [37] L12-2-->L13: Formula: (< 0 v_ULTIMATE.start_main_~flag~0_7) InVars {ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_7} OutVars{ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_7} AuxVars[] AssignedVars[] 6#L13true [36] L13-->L13-2: Formula: (> v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_9) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[] 5#L13-2true [29] L13-2-->L12-2: Formula: (and (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~x~0_7 1))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 3#L12-2true [2020-07-01 13:03:53,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:53,921 INFO L82 PathProgramCache]: Analyzing trace with hash 59, now seen corresponding path program 1 times [2020-07-01 13:03:53,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:53,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233610380] [2020-07-01 13:03:53,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:03:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:03:54,006 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:03:54,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:54,007 INFO L82 PathProgramCache]: Analyzing trace with hash 66493, now seen corresponding path program 1 times [2020-07-01 13:03:54,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:54,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349666002] [2020-07-01 13:03:54,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:03:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:03:54,026 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:03:54,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:54,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1794371, now seen corresponding path program 1 times [2020-07-01 13:03:54,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:54,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628437656] [2020-07-01 13:03:54,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:03:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:03:54,046 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:03:54,095 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:03:54,096 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:03:54,096 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:03:54,096 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:03:54,096 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:03:54,096 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:03:54,096 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:03:54,097 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:03:54,097 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 13:03:54,097 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:03:54,097 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:03:54,117 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 13:03:54,128 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 13:03:54,133 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 13:03:54,139 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 13:03:54,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:03:54,250 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:03:54,251 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 13:03:54,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:03:54,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:03:54,268 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:03:54,268 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:03:54,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:03:54,303 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:03:54,307 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:03:54,307 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:03:54,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:03:54,340 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:03:54,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:03:54,377 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:03:54,393 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:03:54,393 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=-1}] Lambdas: [11, 1, 1] Nus: [0, 0] 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 13:03:54,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:03:54,427 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 13:03:54,464 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:03:54,464 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:03:54,635 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 13:03:54,638 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:03:54,654 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:03:54,654 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:03:54,654 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:03:54,654 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 13:03:54,654 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:03:54,655 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:03:54,655 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:03:54,655 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 13:03:54,655 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:03:54,655 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:03:54,657 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 13:03:54,662 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 13:03:54,666 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 13:03:54,675 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 13:03:54,683 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 13:03:54,767 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:03:54,773 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:03:54,778 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 13:03:54,781 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:03:54,782 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:03:54,782 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:03:54,782 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:03:54,788 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 13:03:54,788 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 13:03:54,795 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 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 13:03:54,830 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 13:03:54,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:03:54,833 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:03:54,833 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:03:54,833 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:03:54,837 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 13:03:54,838 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 13:03:54,843 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 13:03:54,877 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 13:03:54,879 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:03:54,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:03:54,880 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:03:54,880 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:03:54,880 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:03:54,881 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:03:54,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:03:54,884 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 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 13:03:54,919 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 13:03:54,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:03:54,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:03:54,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:03:54,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:03:54,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:03:54,923 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:03:54,923 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:03:54,926 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 13:03:54,931 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 13:03:54,931 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 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 13:03:54,941 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 13:03:54,942 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 13:03:54,942 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 13:03:54,943 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 13:03:54,976 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 13:03:55,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:03:55,018 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 13:03:55,020 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:03:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:03:55,030 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 13:03:55,031 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:03:55,059 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 13:03:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:03:55,090 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 13:03:55,090 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:03:55,119 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 13:03:55,124 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 13:03:55,126 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 4 states. [2020-07-01 13:03:55,217 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 4 states. Result 16 states and 26 transitions. Complement of second has 9 states. [2020-07-01 13:03:55,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 13:03:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 13:03:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2020-07-01 13:03:55,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 13:03:55,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:03:55,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 13:03:55,225 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:03:55,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 13:03:55,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:03:55,233 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 26 transitions. [2020-07-01 13:03:55,234 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 13:03:55,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 15 states and 25 transitions. [2020-07-01 13:03:55,242 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 13:03:55,242 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 13:03:55,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 25 transitions. [2020-07-01 13:03:55,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 13:03:55,243 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 25 transitions. [2020-07-01 13:03:55,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 25 transitions. [2020-07-01 13:03:55,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 10. [2020-07-01 13:03:55,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 13:03:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 19 transitions. [2020-07-01 13:03:55,275 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 19 transitions. [2020-07-01 13:03:55,275 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 19 transitions. [2020-07-01 13:03:55,276 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 13:03:55,276 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 19 transitions. [2020-07-01 13:03:55,277 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 13:03:55,277 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:03:55,277 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:03:55,278 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:03:55,278 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 13:03:55,278 INFO L794 eck$LassoCheckResult]: Stem: 78#ULTIMATE.startENTRY [28] ULTIMATE.startENTRY-->L12-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~flag~0_1 1) (= v_ULTIMATE.start_main_~c~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~flag~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 79#L12-2 [38] L12-2-->L13: Formula: (> 0 v_ULTIMATE.start_main_~flag~0_7) InVars {ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_7} OutVars{ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_7} AuxVars[] AssignedVars[] 75#L13 [2020-07-01 13:03:55,279 INFO L796 eck$LassoCheckResult]: Loop: 75#L13 [30] L13-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~flag~0_8 0) (<= v_ULTIMATE.start_main_~y~0_6 v_ULTIMATE.start_main_~x~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~flag~0] 80#L13-2 [29] L13-2-->L12-2: Formula: (and (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~x~0_7 1))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 74#L12-2 [37] L12-2-->L13: Formula: (< 0 v_ULTIMATE.start_main_~flag~0_7) InVars {ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_7} OutVars{ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_7} AuxVars[] AssignedVars[] 75#L13 [2020-07-01 13:03:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:55,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1867, now seen corresponding path program 1 times [2020-07-01 13:03:55,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:55,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969521396] [2020-07-01 13:03:55,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:03:55,317 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 13:03:55,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969521396] [2020-07-01 13:03:55,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 13:03:55,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-07-01 13:03:55,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941738694] [2020-07-01 13:03:55,322 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 13:03:55,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:55,322 INFO L82 PathProgramCache]: Analyzing trace with hash 59557, now seen corresponding path program 1 times [2020-07-01 13:03:55,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:55,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973456306] [2020-07-01 13:03:55,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:03:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 13:03:55,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973456306] [2020-07-01 13:03:55,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 13:03:55,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-07-01 13:03:55,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289273691] [2020-07-01 13:03:55,340 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 13:03:55,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 13:03:55,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 13:03:55,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 13:03:55,344 INFO L87 Difference]: Start difference. First operand 10 states and 19 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-07-01 13:03:55,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 13:03:55,363 INFO L93 Difference]: Finished difference Result 14 states and 23 transitions. [2020-07-01 13:03:55,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 13:03:55,366 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 23 transitions. [2020-07-01 13:03:55,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 13:03:55,368 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 23 transitions. [2020-07-01 13:03:55,368 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 13:03:55,369 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-07-01 13:03:55,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 23 transitions. [2020-07-01 13:03:55,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 13:03:55,370 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 23 transitions. [2020-07-01 13:03:55,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 23 transitions. [2020-07-01 13:03:55,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-07-01 13:03:55,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-01 13:03:55,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 22 transitions. [2020-07-01 13:03:55,372 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 22 transitions. [2020-07-01 13:03:55,372 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 22 transitions. [2020-07-01 13:03:55,372 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 13:03:55,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 22 transitions. [2020-07-01 13:03:55,373 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 13:03:55,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:03:55,373 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:03:55,373 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:03:55,374 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 13:03:55,374 INFO L794 eck$LassoCheckResult]: Stem: 110#ULTIMATE.startENTRY [28] ULTIMATE.startENTRY-->L12-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~flag~0_1 1) (= v_ULTIMATE.start_main_~c~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~flag~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 105#L12-2 [37] L12-2-->L13: Formula: (< 0 v_ULTIMATE.start_main_~flag~0_7) InVars {ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_7} OutVars{ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_7} AuxVars[] AssignedVars[] 106#L13 [2020-07-01 13:03:55,374 INFO L796 eck$LassoCheckResult]: Loop: 106#L13 [30] L13-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~flag~0_8 0) (<= v_ULTIMATE.start_main_~y~0_6 v_ULTIMATE.start_main_~x~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~flag~0] 111#L13-2 [29] L13-2-->L12-2: Formula: (and (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~x~0_7 1))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 112#L12-2 [37] L12-2-->L13: Formula: (< 0 v_ULTIMATE.start_main_~flag~0_7) InVars {ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_7} OutVars{ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_7} AuxVars[] AssignedVars[] 106#L13 [2020-07-01 13:03:55,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:55,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1866, now seen corresponding path program 1 times [2020-07-01 13:03:55,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:55,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061088933] [2020-07-01 13:03:55,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:03:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:03:55,383 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:03:55,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:55,383 INFO L82 PathProgramCache]: Analyzing trace with hash 59557, now seen corresponding path program 2 times [2020-07-01 13:03:55,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:55,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194546264] [2020-07-01 13:03:55,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:03:55,403 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 13:03:55,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194546264] [2020-07-01 13:03:55,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 13:03:55,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-07-01 13:03:55,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542887881] [2020-07-01 13:03:55,405 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 13:03:55,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 13:03:55,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 13:03:55,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 13:03:55,406 INFO L87 Difference]: Start difference. First operand 13 states and 22 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-07-01 13:03:55,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 13:03:55,420 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2020-07-01 13:03:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 13:03:55,422 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2020-07-01 13:03:55,423 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 13:03:55,423 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 19 transitions. [2020-07-01 13:03:55,423 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 13:03:55,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-07-01 13:03:55,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2020-07-01 13:03:55,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 13:03:55,424 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-07-01 13:03:55,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2020-07-01 13:03:55,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-07-01 13:03:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-01 13:03:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2020-07-01 13:03:55,426 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2020-07-01 13:03:55,426 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2020-07-01 13:03:55,426 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 13:03:55,427 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2020-07-01 13:03:55,427 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 13:03:55,427 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:03:55,427 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:03:55,428 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:03:55,428 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 13:03:55,428 INFO L794 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY [28] ULTIMATE.startENTRY-->L12-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~flag~0_1 1) (= v_ULTIMATE.start_main_~c~0_1 0)) 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_~flag~0=v_ULTIMATE.start_main_~flag~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~flag~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 143#L12-2 [37] L12-2-->L13: Formula: (< 0 v_ULTIMATE.start_main_~flag~0_7) InVars {ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_7} OutVars{ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_7} AuxVars[] AssignedVars[] 139#L13 [2020-07-01 13:03:55,428 INFO L796 eck$LassoCheckResult]: Loop: 139#L13 [30] L13-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~flag~0_8 0) (<= v_ULTIMATE.start_main_~y~0_6 v_ULTIMATE.start_main_~x~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~flag~0] 144#L13-2 [29] L13-2-->L12-2: Formula: (and (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~x~0_7 1))) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 138#L12-2 [38] L12-2-->L13: Formula: (> 0 v_ULTIMATE.start_main_~flag~0_7) InVars {ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_7} OutVars{ULTIMATE.start_main_~flag~0=v_ULTIMATE.start_main_~flag~0_7} AuxVars[] AssignedVars[] 139#L13 [2020-07-01 13:03:55,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:55,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1866, now seen corresponding path program 2 times [2020-07-01 13:03:55,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:55,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324055346] [2020-07-01 13:03:55,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:03:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:03:55,438 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:03:55,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:03:55,438 INFO L82 PathProgramCache]: Analyzing trace with hash 59558, now seen corresponding path program 1 times [2020-07-01 13:03:55,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:03:55,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155323158] [2020-07-01 13:03:55,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:03:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:03:55,465 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 13:03:55,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155323158] [2020-07-01 13:03:55,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 13:03:55,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-07-01 13:03:55,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056874588] [2020-07-01 13:03:55,467 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 13:03:55,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 13:03:55,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 13:03:55,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 13:03:55,467 INFO L87 Difference]: Start difference. First operand 13 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-07-01 13:03:55,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 13:03:55,478 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-07-01 13:03:55,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 13:03:55,481 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2020-07-01 13:03:55,481 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 13:03:55,481 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2020-07-01 13:03:55,482 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 13:03:55,482 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 13:03:55,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 13:03:55,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 13:03:55,482 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:03:55,482 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:03:55,482 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:03:55,482 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 13:03:55,482 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 13:03:55,483 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 13:03:55,483 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 13:03:55,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:03:55 BasicIcfg [2020-07-01 13:03:55,489 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 13:03:55,491 INFO L168 Benchmark]: Toolchain (without parser) took 2412.72 ms. Allocated memory was 649.6 MB in the beginning and 671.6 MB in the end (delta: 22.0 MB). Free memory was 556.2 MB in the beginning and 452.9 MB in the end (delta: 103.3 MB). Peak memory consumption was 125.3 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:55,492 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 578.9 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 13:03:55,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.15 ms. Allocated memory was 649.6 MB in the beginning and 671.6 MB in the end (delta: 22.0 MB). Free memory was 556.2 MB in the beginning and 635.0 MB in the end (delta: -78.9 MB). Peak memory consumption was 28.3 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:55,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.07 ms. Allocated memory is still 671.6 MB. Free memory was 635.0 MB in the beginning and 633.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:55,494 INFO L168 Benchmark]: Boogie Preprocessor took 19.28 ms. Allocated memory is still 671.6 MB. Free memory was 633.7 MB in the beginning and 632.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:55,494 INFO L168 Benchmark]: RCFGBuilder took 210.44 ms. Allocated memory is still 671.6 MB. Free memory was 632.3 MB in the beginning and 617.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:55,495 INFO L168 Benchmark]: BlockEncodingV2 took 71.92 ms. Allocated memory is still 671.6 MB. Free memory was 617.9 MB in the beginning and 612.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:55,495 INFO L168 Benchmark]: TraceAbstraction took 147.43 ms. Allocated memory is still 671.6 MB. Free memory was 611.2 MB in the beginning and 603.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:55,496 INFO L168 Benchmark]: BuchiAutomizer took 1646.29 ms. Allocated memory is still 671.6 MB. Free memory was 603.1 MB in the beginning and 452.9 MB in the end (delta: 150.1 MB). Peak memory consumption was 150.1 MB. Max. memory is 50.3 GB. [2020-07-01 13:03:55,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 10 edges - StatisticsResult: Encoded RCFG 4 locations, 6 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 578.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 278.15 ms. Allocated memory was 649.6 MB in the beginning and 671.6 MB in the end (delta: 22.0 MB). Free memory was 556.2 MB in the beginning and 635.0 MB in the end (delta: -78.9 MB). Peak memory consumption was 28.3 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.07 ms. Allocated memory is still 671.6 MB. Free memory was 635.0 MB in the beginning and 633.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.28 ms. Allocated memory is still 671.6 MB. Free memory was 633.7 MB in the beginning and 632.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * RCFGBuilder took 210.44 ms. Allocated memory is still 671.6 MB. Free memory was 632.3 MB in the beginning and 617.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 71.92 ms. Allocated memory is still 671.6 MB. Free memory was 617.9 MB in the beginning and 612.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 147.43 ms. Allocated memory is still 671.6 MB. Free memory was 611.2 MB in the beginning and 603.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1646.29 ms. Allocated memory is still 671.6 MB. Free memory was 603.1 MB in the beginning and 452.9 MB in the end (delta: 150.1 MB). Peak memory consumption was 150.1 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (3 trivial, 0 deterministic, 1 nondeterministic). One nondeterministic module has affine ranking function -1 * x + y and consists of 6 locations. 3 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 2. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 14 SDtfs, 20 SDslu, 14 SDs, 0 SdLazy, 50 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp33 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: 2 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 13:03:49.745 ----------------------------------------------- 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_8lt3A1/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 13:03:55.934 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check