/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 12:01:21,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:01:21,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:01:21,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:01:21,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:01:21,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:01:21,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:01:21,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:01:21,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:01:21,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:01:21,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:01:21,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:01:21,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:01:21,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:01:21,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:01:21,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:01:21,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:01:21,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:01:21,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:01:21,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:01:21,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:01:21,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:01:21,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:01:21,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:01:21,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:01:21,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:01:21,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:01:21,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:01:21,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:01:21,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:01:21,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:01:21,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:01:21,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:01:21,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:01:21,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:01:21,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:01:21,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:01:21,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:01:21,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:01:21,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:01:21,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:01:21,993 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 12:01:22,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:01:22,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:01:22,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:01:22,009 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:01:22,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:01:22,009 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:01:22,009 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:01:22,009 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:01:22,010 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:01:22,010 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:01:22,010 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:01:22,010 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:01:22,010 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:01:22,010 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:01:22,011 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:22,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:01:22,011 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:01:22,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:01:22,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:01:22,011 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:01:22,012 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:01:22,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:01:22,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:01:22,012 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:01:22,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:01:22,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:01:22,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:01:22,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:01:22,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:01:22,177 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:01:22,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:01:22,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:01:22,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:01:22,195 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:01:22,196 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:01:22,261 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_T_VnHn/tmp/887060503c2d40a49c35b34b33686617/FLAGe6a0ee573 [2020-07-01 12:01:22,590 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:01:22,591 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:01:22,597 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_T_VnHn/tmp/887060503c2d40a49c35b34b33686617/FLAGe6a0ee573 [2020-07-01 12:01:23,007 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_T_VnHn/tmp/887060503c2d40a49c35b34b33686617 [2020-07-01 12:01:23,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:01:23,020 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:01:23,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:01:23,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:01:23,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:01:23,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:01:23" (1/1) ... [2020-07-01 12:01:23,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b01e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:23, skipping insertion in model container [2020-07-01 12:01:23,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:01:23" (1/1) ... [2020-07-01 12:01:23,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:01:23,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:01:23,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:01:23,285 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:01:23,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:01:23,317 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:01:23,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:23 WrapperNode [2020-07-01 12:01:23,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:01:23,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:01:23,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:01:23,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:01:23,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:23" (1/1) ... [2020-07-01 12:01:23,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:23" (1/1) ... [2020-07-01 12:01:23,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:01:23,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:01:23,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:01:23,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:01:23,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:23" (1/1) ... [2020-07-01 12:01:23,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:23" (1/1) ... [2020-07-01 12:01:23,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:23" (1/1) ... [2020-07-01 12:01:23,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:23" (1/1) ... [2020-07-01 12:01:23,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:23" (1/1) ... [2020-07-01 12:01:23,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:23" (1/1) ... [2020-07-01 12:01:23,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:23" (1/1) ... [2020-07-01 12:01:23,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:01:23,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:01:23,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:01:23,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:01:23,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:23" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:01:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:01:23,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:01:23,603 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:01:23,604 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 12:01:23,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:01:23 BoogieIcfgContainer [2020-07-01 12:01:23,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:01:23,608 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:01:23,608 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:01:23,610 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:01:23,611 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:01:23" (1/1) ... [2020-07-01 12:01:23,623 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 12 edges [2020-07-01 12:01:23,625 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:01:23,626 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:01:23,626 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:01:23,626 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:01:23,628 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:01:23,629 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:01:23,629 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:01:23,644 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:01:23,659 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 12:01:23,663 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 12:01:23,665 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:01:23,678 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 12:01:23,680 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 12:01:23,681 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:01:23,682 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:01:23,682 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:01:23,682 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:01:23,683 INFO L313 BlockEncoder]: Encoded RCFG 5 locations, 8 edges [2020-07-01 12:01:23,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:01:23 BasicIcfg [2020-07-01 12:01:23,683 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:01:23,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:01:23,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:01:23,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:01:23,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:01:23" (1/4) ... [2020-07-01 12:01:23,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe76764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:01:23, skipping insertion in model container [2020-07-01 12:01:23,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:23" (2/4) ... [2020-07-01 12:01:23,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe76764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:01:23, skipping insertion in model container [2020-07-01 12:01:23,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:01:23" (3/4) ... [2020-07-01 12:01:23,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe76764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:01:23, skipping insertion in model container [2020-07-01 12:01:23,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:01:23" (4/4) ... [2020-07-01 12:01:23,692 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:01:23,702 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:01:23,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:01:23,723 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:01:23,746 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:01:23,746 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:01:23,746 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:01:23,746 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:01:23,746 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:01:23,746 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:01:23,747 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:01:23,747 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:01:23,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-07-01 12:01:23,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:01:23,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-07-01 12:01:23,821 INFO L268 CegarLoopResult]: For program point L15(lines 15 19) no Hoare annotation was computed. [2020-07-01 12:01:23,822 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:01:23,822 INFO L268 CegarLoopResult]: For program point L15-2(lines 12 20) no Hoare annotation was computed. [2020-07-01 12:01:23,822 INFO L268 CegarLoopResult]: For program point L12(lines 12 20) no Hoare annotation was computed. [2020-07-01 12:01:23,822 INFO L271 CegarLoopResult]: At program point L11-2(lines 11 22) the Hoare annotation is: true [2020-07-01 12:01:23,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:01:23 BasicIcfg [2020-07-01 12:01:23,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:01:23,831 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:01:23,831 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:01:23,835 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:01:23,835 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:01:23,836 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:01:23" (1/5) ... [2020-07-01 12:01:23,836 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c4255a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:01:23, skipping insertion in model container [2020-07-01 12:01:23,836 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:01:23,837 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:01:23" (2/5) ... [2020-07-01 12:01:23,837 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c4255a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:01:23, skipping insertion in model container [2020-07-01 12:01:23,837 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:01:23,837 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:01:23" (3/5) ... [2020-07-01 12:01:23,838 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c4255a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:01:23, skipping insertion in model container [2020-07-01 12:01:23,838 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:01:23,838 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:01:23" (4/5) ... [2020-07-01 12:01:23,838 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c4255a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:01:23, skipping insertion in model container [2020-07-01 12:01:23,838 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:01:23,839 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:01:23" (5/5) ... [2020-07-01 12:01:23,840 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:01:23,867 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:01:23,868 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:01:23,868 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:01:23,868 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:01:23,868 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:01:23,868 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:01:23,868 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:01:23,868 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:01:23,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-07-01 12:01:23,888 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 12:01:23,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:01:23,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:01:23,895 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:01:23,896 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:01:23,896 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:01:23,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-07-01 12:01:23,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 12:01:23,897 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:01:23,897 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:01:23,897 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:01:23,897 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:01:23,902 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [32] ULTIMATE.startENTRY-->L11-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~c~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 7#L11-2true [2020-07-01 12:01:23,903 INFO L796 eck$LassoCheckResult]: Loop: 7#L11-2true [41] L11-2-->L12: Formula: (< 0 (+ v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~y~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 5#L12true [33] L12-->L15-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_11 (+ v_ULTIMATE.start_main_~x~0_12 (- 1))) (< v_ULTIMATE.start_main_~y~0_11 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 6#L15-2true [36] L15-2-->L11-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 7#L11-2true [2020-07-01 12:01:23,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:23,909 INFO L82 PathProgramCache]: Analyzing trace with hash 63, now seen corresponding path program 1 times [2020-07-01 12:01:23,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:01:23,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445637226] [2020-07-01 12:01:23,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:01:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:23,989 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:01:23,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:23,990 INFO L82 PathProgramCache]: Analyzing trace with hash 70251, now seen corresponding path program 1 times [2020-07-01 12:01:23,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:01:23,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442102642] [2020-07-01 12:01:23,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:01:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:24,008 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:01:24,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:24,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1917293, now seen corresponding path program 1 times [2020-07-01 12:01:24,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:01:24,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681262824] [2020-07-01 12:01:24,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:01:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:24,026 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:01:24,077 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:01:24,078 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:01:24,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:01:24,079 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:01:24,079 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:01:24,079 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:24,079 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:01:24,079 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:01:24,080 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:01:24,080 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:01:24,080 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:01:24,099 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 12:01:24,110 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 12:01:24,115 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 12:01:24,121 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 12:01:24,252 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:01:24,253 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:24,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:01:24,260 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:01:24,271 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:01:24,271 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 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 12:01:24,306 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:01:24,306 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:01:24,311 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:01:24,311 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 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 12:01:24,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:01:24,344 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:24,380 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:01:24,380 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:01:24,396 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:01:24,396 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/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:24,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:01:24,429 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:24,465 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:01:24,465 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:01:24,607 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:01:24,609 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:01:24,609 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:01:24,610 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:01:24,610 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:01:24,610 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:01:24,610 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:24,610 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:01:24,610 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:01:24,610 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:01:24,611 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:01:24,611 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:01:24,613 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 12:01:24,617 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 12:01:24,621 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 12:01:24,626 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 12:01:24,701 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:01:24,707 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/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 12:01:24,711 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 12:01:24,714 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:01:24,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:01:24,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:01:24,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:01:24,721 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:01:24,721 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:01:24,727 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 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 12:01:24,759 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 12:01:24,761 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:01:24,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:01:24,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:01:24,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:01:24,766 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:01:24,766 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:01:24,771 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:24,804 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 12:01:24,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:01:24,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:01:24,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:01:24,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:01:24,807 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:01:24,808 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:01:24,808 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:01:24,811 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:24,843 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 12:01:24,845 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:01:24,846 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:01:24,846 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:01:24,846 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:01:24,846 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:01:24,848 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:01:24,848 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:01:24,851 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:01:24,862 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 12:01:24,863 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:24,873 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:01:24,873 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:01:24,874 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:01:24,875 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 12:01:24,908 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:01:24,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:01:24,948 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:01:24,949 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:01:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:01:24,961 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 12:01:24,962 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:01:25,015 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 12:01:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:01:25,065 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 12:01:25,066 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:01:25,072 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 12:01:25,077 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 12:01:25,079 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states. Second operand 4 states. [2020-07-01 12:01:25,232 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states.. Second operand 4 states. Result 24 states and 35 transitions. Complement of second has 11 states. [2020-07-01 12:01:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 4 non-accepting loop states 2 accepting loop states [2020-07-01 12:01:25,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 12:01:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 27 transitions. [2020-07-01 12:01:25,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 27 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 12:01:25,240 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:01:25,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 27 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 12:01:25,240 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:01:25,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 27 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 12:01:25,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:01:25,249 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 35 transitions. [2020-07-01 12:01:25,250 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-07-01 12:01:25,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 35 transitions. [2020-07-01 12:01:25,256 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-07-01 12:01:25,256 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-07-01 12:01:25,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2020-07-01 12:01:25,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:01:25,258 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2020-07-01 12:01:25,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2020-07-01 12:01:25,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 11. [2020-07-01 12:01:25,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-01 12:01:25,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 17 transitions. [2020-07-01 12:01:25,290 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2020-07-01 12:01:25,290 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2020-07-01 12:01:25,290 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 12:01:25,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 17 transitions. [2020-07-01 12:01:25,291 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 12:01:25,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:01:25,291 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:01:25,292 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:01:25,292 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 12:01:25,292 INFO L794 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY [32] ULTIMATE.startENTRY-->L11-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~c~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 96#L11-2 [41] L11-2-->L12: Formula: (< 0 (+ v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~y~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 97#L12 [2020-07-01 12:01:25,293 INFO L796 eck$LassoCheckResult]: Loop: 97#L12 [43] L12-->L15: Formula: (>= v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 90#L15 [45] L15-->L15-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_7 (+ v_ULTIMATE.start_main_~y~0_8 (- 1))) (> v_ULTIMATE.start_main_~x~0_8 v_ULTIMATE.start_main_~y~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 91#L15-2 [36] L15-2-->L11-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 99#L11-2 [41] L11-2-->L12: Formula: (< 0 (+ v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~y~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 97#L12 [2020-07-01 12:01:25,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:25,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1994, now seen corresponding path program 1 times [2020-07-01 12:01:25,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:01:25,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980151537] [2020-07-01 12:01:25,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:01:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:25,303 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:01:25,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:25,304 INFO L82 PathProgramCache]: Analyzing trace with hash 2248936, now seen corresponding path program 1 times [2020-07-01 12:01:25,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:01:25,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485378544] [2020-07-01 12:01:25,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:01:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:01:25,339 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 12:01:25,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485378544] [2020-07-01 12:01:25,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:01:25,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:01:25,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656103126] [2020-07-01 12:01:25,345 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 12:01:25,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:01:25,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:01:25,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:01:25,349 INFO L87 Difference]: Start difference. First operand 11 states and 17 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-07-01 12:01:25,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:01:25,376 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-07-01 12:01:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:01:25,379 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2020-07-01 12:01:25,380 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 12:01:25,381 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 21 transitions. [2020-07-01 12:01:25,381 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-07-01 12:01:25,381 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-07-01 12:01:25,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2020-07-01 12:01:25,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:01:25,381 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2020-07-01 12:01:25,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2020-07-01 12:01:25,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2020-07-01 12:01:25,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-01 12:01:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2020-07-01 12:01:25,383 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-07-01 12:01:25,384 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-07-01 12:01:25,384 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 12:01:25,384 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2020-07-01 12:01:25,385 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 12:01:25,385 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:01:25,385 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:01:25,385 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:01:25,385 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 12:01:25,386 INFO L794 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY [32] ULTIMATE.startENTRY-->L11-2: 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_~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_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~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_#res, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 129#L11-2 [41] L11-2-->L12: Formula: (< 0 (+ v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~y~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 130#L12 [2020-07-01 12:01:25,386 INFO L796 eck$LassoCheckResult]: Loop: 130#L12 [43] L12-->L15: Formula: (>= v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 123#L15 [46] L15-->L15-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_7 (+ v_ULTIMATE.start_main_~y~0_8 (- 1))) (< v_ULTIMATE.start_main_~x~0_8 v_ULTIMATE.start_main_~y~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 124#L15-2 [36] L15-2-->L11-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 132#L11-2 [41] L11-2-->L12: Formula: (< 0 (+ v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~y~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 130#L12 [2020-07-01 12:01:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:25,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1994, now seen corresponding path program 2 times [2020-07-01 12:01:25,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:01:25,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105288234] [2020-07-01 12:01:25,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:01:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:25,394 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:01:25,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:25,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2249897, now seen corresponding path program 1 times [2020-07-01 12:01:25,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:01:25,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588721943] [2020-07-01 12:01:25,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:01:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:25,412 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:01:25,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:25,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1842827250, now seen corresponding path program 1 times [2020-07-01 12:01:25,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:01:25,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607391131] [2020-07-01 12:01:25,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:01:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:01:25,427 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:01:25,468 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:01:25,468 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:01:25,468 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:01:25,468 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:01:25,468 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:01:25,468 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:25,469 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:01:25,469 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:01:25,469 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 12:01:25,469 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:01:25,469 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:01:25,471 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 12:01:25,475 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 12:01:25,479 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 12:01:25,484 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 12:01:25,560 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:01:25,560 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:25,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:01:25,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:01:25,571 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:01:25,571 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:25,605 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:01:25,606 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:01:25,611 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:01:25,611 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-01 12:01:25,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:01:25,646 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:25,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:01:25,683 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:01:25,699 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:01:25,699 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/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:25,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:01:25,734 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:01:25,770 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:01:25,770 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:01:25,954 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:01:25,957 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:01:25,957 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:01:25,957 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:01:25,957 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:01:25,957 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:01:25,957 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:25,957 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:01:25,958 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:01:25,958 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 12:01:25,958 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:01:25,958 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:01:25,960 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 12:01:25,964 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 12:01:25,967 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 12:01:25,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:01:26,044 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:01:26,045 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:26,049 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 12:01:26,051 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:01:26,051 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:01:26,051 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:01:26,051 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:01:26,054 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:01:26,054 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:01:26,059 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:26,092 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 12:01:26,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:01:26,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:01:26,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:01:26,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:01:26,097 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:01:26,098 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:01:26,103 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:26,138 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 12:01:26,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:01:26,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:01:26,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:01:26,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:01:26,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:01:26,142 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:01:26,142 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:01:26,144 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:26,177 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 12:01:26,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:01:26,179 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:01:26,179 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:01:26,179 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:01:26,179 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:01:26,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:01:26,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:01:26,184 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:01:26,188 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:01:26,189 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:01:26,194 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:01:26,194 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:01:26,195 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:01:26,195 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 12:01:26,225 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:01:26,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:01:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:01:26,267 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:01:26,267 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:01:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:01:26,273 WARN L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 12:01:26,274 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:01:26,292 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 12:01:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:01:26,322 WARN L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 12:01:26,322 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:01:26,349 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 12:01:26,349 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 12:01:26,350 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 14 states and 19 transitions. cyclomatic complexity: 8 Second operand 4 states. [2020-07-01 12:01:26,443 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 14 states and 19 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 73 states and 96 transitions. Complement of second has 26 states. [2020-07-01 12:01:26,443 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 12:01:26,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 12:01:26,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2020-07-01 12:01:26,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 12:01:26,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:01:26,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 6 letters. Loop has 4 letters. [2020-07-01 12:01:26,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:01:26,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 2 letters. Loop has 8 letters. [2020-07-01 12:01:26,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:01:26,448 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 96 transitions. [2020-07-01 12:01:26,451 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:01:26,451 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 0 states and 0 transitions. [2020-07-01 12:01:26,452 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:01:26,452 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:01:26,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:01:26,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:01:26,452 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:01:26,452 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:01:26,452 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:01:26,452 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 12:01:26,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 12:01:26,453 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:01:26,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 12:01:26,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:01:26 BasicIcfg [2020-07-01 12:01:26,459 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:01:26,461 INFO L168 Benchmark]: Toolchain (without parser) took 3440.47 ms. Allocated memory was 649.6 MB in the beginning and 761.3 MB in the end (delta: 111.7 MB). Free memory was 557.3 MB in the beginning and 680.4 MB in the end (delta: -123.1 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:01:26,461 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 649.6 MB. Free memory is still 577.8 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:01:26,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.63 ms. Allocated memory was 649.6 MB in the beginning and 696.3 MB in the end (delta: 46.7 MB). Free memory was 557.3 MB in the beginning and 659.1 MB in the end (delta: -101.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 50.3 GB. [2020-07-01 12:01:26,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.32 ms. Allocated memory is still 696.3 MB. Free memory was 659.1 MB in the beginning and 658.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:01:26,463 INFO L168 Benchmark]: Boogie Preprocessor took 19.79 ms. Allocated memory is still 696.3 MB. Free memory was 658.1 MB in the beginning and 657.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:01:26,464 INFO L168 Benchmark]: RCFGBuilder took 233.53 ms. Allocated memory is still 696.3 MB. Free memory was 655.9 MB in the beginning and 642.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 50.3 GB. [2020-07-01 12:01:26,464 INFO L168 Benchmark]: BlockEncodingV2 took 75.74 ms. Allocated memory is still 696.3 MB. Free memory was 642.4 MB in the beginning and 637.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:01:26,465 INFO L168 Benchmark]: TraceAbstraction took 146.14 ms. Allocated memory is still 696.3 MB. Free memory was 635.9 MB in the beginning and 627.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. [2020-07-01 12:01:26,465 INFO L168 Benchmark]: BuchiAutomizer took 2627.36 ms. Allocated memory was 696.3 MB in the beginning and 761.3 MB in the end (delta: 65.0 MB). Free memory was 627.3 MB in the beginning and 680.4 MB in the end (delta: -53.1 MB). Peak memory consumption was 11.9 MB. Max. memory is 50.3 GB. [2020-07-01 12:01:26,469 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 9 locations, 12 edges - StatisticsResult: Encoded RCFG 5 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 649.6 MB. Free memory is still 577.8 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 296.63 ms. Allocated memory was 649.6 MB in the beginning and 696.3 MB in the end (delta: 46.7 MB). Free memory was 557.3 MB in the beginning and 659.1 MB in the end (delta: -101.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.32 ms. Allocated memory is still 696.3 MB. Free memory was 659.1 MB in the beginning and 658.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.79 ms. Allocated memory is still 696.3 MB. Free memory was 658.1 MB in the beginning and 657.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 233.53 ms. Allocated memory is still 696.3 MB. Free memory was 655.9 MB in the beginning and 642.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 75.74 ms. Allocated memory is still 696.3 MB. Free memory was 642.4 MB in the beginning and 637.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 146.14 ms. Allocated memory is still 696.3 MB. Free memory was 635.9 MB in the beginning and 627.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2627.36 ms. Allocated memory was 696.3 MB in the beginning and 761.3 MB in the end (delta: 65.0 MB). Free memory was 627.3 MB in the beginning and 680.4 MB in the end (delta: -53.1 MB). Peak memory consumption was 11.9 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: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function x and consists of 7 locations. One nondeterministic module has affine ranking function y and consists of 6 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 34 SDslu, 18 SDs, 0 SdLazy, 83 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax160 hnf100 lsp46 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq139 hnf95 smp100 dnf100 smp100 tf110 neg100 sie118 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 12:01:19.748 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp/BenchExec_run_T_VnHn/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:01:26.702 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check