java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:41:37,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:41:37,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:41:37,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-13 21:41:37,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:41:37,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:41:37,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:41:37,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:41:37,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:41:37,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:41:37,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:41:37,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:41:37,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:41:37,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:41:37,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:41:37,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:41:37,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:41:37,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:41:37,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:41:37,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:41:37,708 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:41:37,724 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:41:37,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:41:37,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:41:37,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:41:37,726 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:41:37,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:41:37,727 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:41:37,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:41:37,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:41:37,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:41:37,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:41:37,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:41:37,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:41:37,728 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:41:37,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:41:37,728 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:41:37,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:41:37,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:41:37,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:41:37,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:41:37,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:41:37,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:41:37,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:41:37,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:41:37,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:41:37,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:41:37,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:41:37,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:41:37,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:41:38,021 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:41:38,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:41:38,039 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:41:38,040 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:41:38,041 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:41:38,042 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label59.c [2019-10-13 21:41:38,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f5092a60/3588173ee3b647b49566eb5847c30811/FLAG033de0a0c [2019-10-13 21:41:38,722 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:41:38,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label59.c [2019-10-13 21:41:38,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f5092a60/3588173ee3b647b49566eb5847c30811/FLAG033de0a0c [2019-10-13 21:41:38,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f5092a60/3588173ee3b647b49566eb5847c30811 [2019-10-13 21:41:38,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:41:38,969 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:41:38,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:41:38,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:41:38,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:41:38,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:41:38" (1/1) ... [2019-10-13 21:41:38,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@430ffa35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:38, skipping insertion in model container [2019-10-13 21:41:38,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:41:38" (1/1) ... [2019-10-13 21:41:38,992 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:41:39,050 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:41:39,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:41:39,460 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:41:39,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:41:39,706 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:41:39,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:39 WrapperNode [2019-10-13 21:41:39,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:41:39,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:41:39,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:41:39,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:41:39,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:39" (1/1) ... [2019-10-13 21:41:39,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:39" (1/1) ... [2019-10-13 21:41:39,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:39" (1/1) ... [2019-10-13 21:41:39,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:39" (1/1) ... [2019-10-13 21:41:39,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:39" (1/1) ... [2019-10-13 21:41:39,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:39" (1/1) ... [2019-10-13 21:41:39,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:39" (1/1) ... [2019-10-13 21:41:39,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:41:39,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:41:39,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:41:39,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:41:39,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:41:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:41:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:41:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:41:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:41:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:41:39,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:41:39,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:41:39,864 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:41:39,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:41:39,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:41:39,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:41:41,951 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:41:41,951 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:41:41,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:41:41 BoogieIcfgContainer [2019-10-13 21:41:41,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:41:41,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:41:41,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:41:41,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:41:41,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:41:38" (1/3) ... [2019-10-13 21:41:41,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2768aa62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:41:41, skipping insertion in model container [2019-10-13 21:41:41,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:39" (2/3) ... [2019-10-13 21:41:41,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2768aa62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:41:41, skipping insertion in model container [2019-10-13 21:41:41,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:41:41" (3/3) ... [2019-10-13 21:41:41,973 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label59.c [2019-10-13 21:41:41,991 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:41:42,000 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:41:42,011 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:41:42,042 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:41:42,042 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:41:42,042 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:41:42,042 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:41:42,043 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:41:42,043 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:41:42,043 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:41:42,043 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:41:42,064 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-13 21:41:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-13 21:41:42,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:42,075 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:42,077 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:42,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:42,082 INFO L82 PathProgramCache]: Analyzing trace with hash -219460263, now seen corresponding path program 1 times [2019-10-13 21:41:42,089 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:42,089 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930260761] [2019-10-13 21:41:42,089 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:42,089 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:42,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:42,496 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930260761] [2019-10-13 21:41:42,498 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:42,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:41:42,500 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773667806] [2019-10-13 21:41:42,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:42,511 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:42,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:42,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:42,535 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 3 states. [2019-10-13 21:41:43,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:43,082 INFO L93 Difference]: Finished difference Result 273 states and 508 transitions. [2019-10-13 21:41:43,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:43,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-10-13 21:41:43,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:43,108 INFO L225 Difference]: With dead ends: 273 [2019-10-13 21:41:43,108 INFO L226 Difference]: Without dead ends: 175 [2019-10-13 21:41:43,114 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-13 21:41:43,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2019-10-13 21:41:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-10-13 21:41:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 312 transitions. [2019-10-13 21:41:43,216 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 312 transitions. Word has length 86 [2019-10-13 21:41:43,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:43,217 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 312 transitions. [2019-10-13 21:41:43,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:43,218 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 312 transitions. [2019-10-13 21:41:43,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:41:43,228 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:43,228 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:43,229 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:43,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:43,230 INFO L82 PathProgramCache]: Analyzing trace with hash -701995042, now seen corresponding path program 1 times [2019-10-13 21:41:43,230 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:43,231 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367581517] [2019-10-13 21:41:43,231 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:43,231 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:43,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:43,468 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367581517] [2019-10-13 21:41:43,468 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:43,469 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:41:43,469 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618217831] [2019-10-13 21:41:43,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:43,471 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:43,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:43,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:43,472 INFO L87 Difference]: Start difference. First operand 175 states and 312 transitions. Second operand 3 states. [2019-10-13 21:41:43,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:43,918 INFO L93 Difference]: Finished difference Result 513 states and 937 transitions. [2019-10-13 21:41:43,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:43,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2019-10-13 21:41:43,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:43,926 INFO L225 Difference]: With dead ends: 513 [2019-10-13 21:41:43,926 INFO L226 Difference]: Without dead ends: 343 [2019-10-13 21:41:43,928 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:43,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2019-10-13 21:41:43,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 259. [2019-10-13 21:41:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-10-13 21:41:43,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 415 transitions. [2019-10-13 21:41:43,963 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 415 transitions. Word has length 94 [2019-10-13 21:41:43,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:43,964 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 415 transitions. [2019-10-13 21:41:43,964 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:43,964 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 415 transitions. [2019-10-13 21:41:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 21:41:43,969 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:43,969 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:43,969 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:43,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:43,970 INFO L82 PathProgramCache]: Analyzing trace with hash -2133153300, now seen corresponding path program 1 times [2019-10-13 21:41:43,970 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:43,970 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146010876] [2019-10-13 21:41:43,971 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:43,971 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:43,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:44,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146010876] [2019-10-13 21:41:44,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889157083] [2019-10-13 21:41:44,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:44,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:41:44,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:41:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:44,284 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:41:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:44,335 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:41:44,336 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2019-10-13 21:41:44,336 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021723055] [2019-10-13 21:41:44,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:41:44,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:44,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:41:44,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:41:44,338 INFO L87 Difference]: Start difference. First operand 259 states and 415 transitions. Second operand 4 states. [2019-10-13 21:41:45,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:45,231 INFO L93 Difference]: Finished difference Result 1017 states and 1697 transitions. [2019-10-13 21:41:45,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:41:45,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2019-10-13 21:41:45,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:45,237 INFO L225 Difference]: With dead ends: 1017 [2019-10-13 21:41:45,238 INFO L226 Difference]: Without dead ends: 679 [2019-10-13 21:41:45,241 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:41:45,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2019-10-13 21:41:45,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 595. [2019-10-13 21:41:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-10-13 21:41:45,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 929 transitions. [2019-10-13 21:41:45,293 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 929 transitions. Word has length 99 [2019-10-13 21:41:45,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:45,294 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 929 transitions. [2019-10-13 21:41:45,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:41:45,294 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 929 transitions. [2019-10-13 21:41:45,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 21:41:45,301 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:45,301 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:45,505 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:45,506 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:45,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:45,506 INFO L82 PathProgramCache]: Analyzing trace with hash -217629803, now seen corresponding path program 1 times [2019-10-13 21:41:45,506 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:45,506 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950324469] [2019-10-13 21:41:45,507 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:45,507 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:45,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:45,654 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950324469] [2019-10-13 21:41:45,654 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:45,654 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:41:45,654 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263775730] [2019-10-13 21:41:45,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:41:45,656 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:45,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:41:45,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:41:45,657 INFO L87 Difference]: Start difference. First operand 595 states and 929 transitions. Second operand 6 states. [2019-10-13 21:41:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:46,426 INFO L93 Difference]: Finished difference Result 1747 states and 2935 transitions. [2019-10-13 21:41:46,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:41:46,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2019-10-13 21:41:46,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:46,437 INFO L225 Difference]: With dead ends: 1747 [2019-10-13 21:41:46,438 INFO L226 Difference]: Without dead ends: 1157 [2019-10-13 21:41:46,440 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:41:46,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2019-10-13 21:41:46,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1129. [2019-10-13 21:41:46,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2019-10-13 21:41:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1758 transitions. [2019-10-13 21:41:46,536 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1758 transitions. Word has length 118 [2019-10-13 21:41:46,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:46,536 INFO L462 AbstractCegarLoop]: Abstraction has 1129 states and 1758 transitions. [2019-10-13 21:41:46,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:41:46,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1758 transitions. [2019-10-13 21:41:46,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 21:41:46,544 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:46,545 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:46,545 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:46,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:46,545 INFO L82 PathProgramCache]: Analyzing trace with hash -423602746, now seen corresponding path program 1 times [2019-10-13 21:41:46,546 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:46,546 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293074434] [2019-10-13 21:41:46,546 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:46,546 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:46,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:46,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293074434] [2019-10-13 21:41:46,738 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:46,738 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:41:46,738 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36872758] [2019-10-13 21:41:46,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:41:46,741 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:46,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:41:46,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:41:46,742 INFO L87 Difference]: Start difference. First operand 1129 states and 1758 transitions. Second operand 6 states. [2019-10-13 21:41:47,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:47,402 INFO L93 Difference]: Finished difference Result 2301 states and 3684 transitions. [2019-10-13 21:41:47,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:41:47,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2019-10-13 21:41:47,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:47,411 INFO L225 Difference]: With dead ends: 2301 [2019-10-13 21:41:47,411 INFO L226 Difference]: Without dead ends: 1177 [2019-10-13 21:41:47,415 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:41:47,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2019-10-13 21:41:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1153. [2019-10-13 21:41:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2019-10-13 21:41:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1719 transitions. [2019-10-13 21:41:47,462 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1719 transitions. Word has length 148 [2019-10-13 21:41:47,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:47,463 INFO L462 AbstractCegarLoop]: Abstraction has 1153 states and 1719 transitions. [2019-10-13 21:41:47,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:41:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1719 transitions. [2019-10-13 21:41:47,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 21:41:47,468 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:47,468 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:47,468 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:47,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:47,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1279191556, now seen corresponding path program 1 times [2019-10-13 21:41:47,469 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:47,469 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379146962] [2019-10-13 21:41:47,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:47,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:47,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:47,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379146962] [2019-10-13 21:41:47,681 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:47,681 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:41:47,681 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689931934] [2019-10-13 21:41:47,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:41:47,682 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:47,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:41:47,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:41:47,687 INFO L87 Difference]: Start difference. First operand 1153 states and 1719 transitions. Second operand 6 states. [2019-10-13 21:41:48,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:48,444 INFO L93 Difference]: Finished difference Result 2355 states and 3705 transitions. [2019-10-13 21:41:48,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:41:48,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2019-10-13 21:41:48,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:48,453 INFO L225 Difference]: With dead ends: 2355 [2019-10-13 21:41:48,453 INFO L226 Difference]: Without dead ends: 1115 [2019-10-13 21:41:48,457 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:41:48,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2019-10-13 21:41:48,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1071. [2019-10-13 21:41:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2019-10-13 21:41:48,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1494 transitions. [2019-10-13 21:41:48,508 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1494 transitions. Word has length 157 [2019-10-13 21:41:48,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:48,509 INFO L462 AbstractCegarLoop]: Abstraction has 1071 states and 1494 transitions. [2019-10-13 21:41:48,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:41:48,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1494 transitions. [2019-10-13 21:41:48,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 21:41:48,514 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:48,514 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:48,515 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:48,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:48,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1688231143, now seen corresponding path program 1 times [2019-10-13 21:41:48,515 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:48,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130443361] [2019-10-13 21:41:48,516 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:48,516 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:48,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:48,631 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:48,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130443361] [2019-10-13 21:41:48,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713842779] [2019-10-13 21:41:48,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:48,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 21:41:48,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:41:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:48,757 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:41:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:48,840 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [993665739] [2019-10-13 21:41:48,881 INFO L162 IcfgInterpreter]: Started Sifa with 90 locations of interest [2019-10-13 21:41:48,881 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:41:48,887 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:41:48,894 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:41:48,895 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:41:49,206 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 89 for LOIs [2019-10-13 21:41:49,783 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:49,785 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:41:49,791 INFO L168 Benchmark]: Toolchain (without parser) took 10821.75 ms. Allocated memory was 144.2 MB in the beginning and 395.8 MB in the end (delta: 251.7 MB). Free memory was 101.1 MB in the beginning and 217.6 MB in the end (delta: -116.4 MB). Peak memory consumption was 135.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:49,795 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:41:49,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.13 ms. Allocated memory was 144.2 MB in the beginning and 203.9 MB in the end (delta: 59.8 MB). Free memory was 100.7 MB in the beginning and 170.9 MB in the end (delta: -70.2 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:49,797 INFO L168 Benchmark]: Boogie Preprocessor took 101.16 ms. Allocated memory is still 203.9 MB. Free memory was 170.9 MB in the beginning and 166.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:49,798 INFO L168 Benchmark]: RCFGBuilder took 2144.56 ms. Allocated memory was 203.9 MB in the beginning and 253.2 MB in the end (delta: 49.3 MB). Free memory was 166.0 MB in the beginning and 199.3 MB in the end (delta: -33.3 MB). Peak memory consumption was 118.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:49,798 INFO L168 Benchmark]: TraceAbstraction took 7833.78 ms. Allocated memory was 253.2 MB in the beginning and 395.8 MB in the end (delta: 142.6 MB). Free memory was 199.3 MB in the beginning and 217.6 MB in the end (delta: -18.3 MB). Peak memory consumption was 124.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:49,803 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 734.13 ms. Allocated memory was 144.2 MB in the beginning and 203.9 MB in the end (delta: 59.8 MB). Free memory was 100.7 MB in the beginning and 170.9 MB in the end (delta: -70.2 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.16 ms. Allocated memory is still 203.9 MB. Free memory was 170.9 MB in the beginning and 166.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2144.56 ms. Allocated memory was 203.9 MB in the beginning and 253.2 MB in the end (delta: 49.3 MB). Free memory was 166.0 MB in the beginning and 199.3 MB in the end (delta: -33.3 MB). Peak memory consumption was 118.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7833.78 ms. Allocated memory was 253.2 MB in the beginning and 395.8 MB in the end (delta: 142.6 MB). Free memory was 199.3 MB in the beginning and 217.6 MB in the end (delta: -18.3 MB). Peak memory consumption was 124.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...