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/Problem01_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:56:13,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:56:13,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:56:13,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 00:56:13,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:56:13,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:56:13,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:56:13,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:56:13,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:56:13,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:56:13,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:56:13,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:56:13,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:56:13,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:56:13,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:56:13,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:56:13,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:56:13,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:56:13,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:56:13,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:56:13,475 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 [2019-10-07 00:56:13,497 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:56:13,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:56:13,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:56:13,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:56:13,499 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:56:13,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:56:13,500 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:56:13,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:56:13,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:56:13,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:56:13,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:56:13,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:56:13,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:56:13,501 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:56:13,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:56:13,502 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:56:13,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:56:13,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:56:13,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:56:13,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:56:13,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:56:13,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:56:13,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:56:13,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:56:13,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:56:13,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:56:13,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:56:13,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:56:13,504 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 [2019-10-07 00:56:13,773 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:56:13,790 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:56:13,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:56:13,796 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:56:13,796 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:56:13,797 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label29.c [2019-10-07 00:56:13,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6679f2ec6/90ab155829634bb5bd480a46ee375de4/FLAGe4bd6763e [2019-10-07 00:56:14,527 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:56:14,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label29.c [2019-10-07 00:56:14,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6679f2ec6/90ab155829634bb5bd480a46ee375de4/FLAGe4bd6763e [2019-10-07 00:56:14,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6679f2ec6/90ab155829634bb5bd480a46ee375de4 [2019-10-07 00:56:14,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:56:14,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:56:14,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:56:14,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:56:14,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:56:14,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:56:14" (1/1) ... [2019-10-07 00:56:14,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa87bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:14, skipping insertion in model container [2019-10-07 00:56:14,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:56:14" (1/1) ... [2019-10-07 00:56:14,758 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:56:14,817 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:56:15,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:56:15,341 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:56:15,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:56:15,478 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:56:15,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:15 WrapperNode [2019-10-07 00:56:15,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:56:15,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:56:15,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:56:15,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:56:15,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:15" (1/1) ... [2019-10-07 00:56:15,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:15" (1/1) ... [2019-10-07 00:56:15,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:15" (1/1) ... [2019-10-07 00:56:15,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:15" (1/1) ... [2019-10-07 00:56:15,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:15" (1/1) ... [2019-10-07 00:56:15,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:15" (1/1) ... [2019-10-07 00:56:15,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:15" (1/1) ... [2019-10-07 00:56:15,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:56:15,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:56:15,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:56:15,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:56:15,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:15" (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 [2019-10-07 00:56:15,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:56:15,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:56:15,663 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:56:15,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:56:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:56:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:56:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:56:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:56:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:56:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:56:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:56:17,548 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:56:17,548 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:56:17,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:56:17 BoogieIcfgContainer [2019-10-07 00:56:17,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:56:17,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:56:17,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:56:17,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:56:17,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:56:14" (1/3) ... [2019-10-07 00:56:17,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc7e1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:56:17, skipping insertion in model container [2019-10-07 00:56:17,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:15" (2/3) ... [2019-10-07 00:56:17,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc7e1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:56:17, skipping insertion in model container [2019-10-07 00:56:17,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:56:17" (3/3) ... [2019-10-07 00:56:17,569 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label29.c [2019-10-07 00:56:17,583 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:56:17,594 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:56:17,605 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:56:17,650 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:56:17,651 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:56:17,651 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:56:17,651 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:56:17,651 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:56:17,652 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:56:17,652 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:56:17,652 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:56:17,683 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-07 00:56:17,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-07 00:56:17,692 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:17,693 INFO L385 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] [2019-10-07 00:56:17,695 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:17,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:17,701 INFO L82 PathProgramCache]: Analyzing trace with hash 826818660, now seen corresponding path program 1 times [2019-10-07 00:56:17,710 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:17,711 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:17,711 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:17,711 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:17,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:18,153 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:18,154 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:56:18,155 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:56:18,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:56:18,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:56:18,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:56:18,177 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-07 00:56:18,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:18,697 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-07 00:56:18,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:56:18,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-07 00:56:18,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:18,721 INFO L225 Difference]: With dead ends: 246 [2019-10-07 00:56:18,721 INFO L226 Difference]: Without dead ends: 157 [2019-10-07 00:56:18,728 INFO L606 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 [2019-10-07 00:56:18,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-07 00:56:18,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-07 00:56:18,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-07 00:56:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions. [2019-10-07 00:56:18,828 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 77 [2019-10-07 00:56:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:18,830 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions. [2019-10-07 00:56:18,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:56:18,830 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions. [2019-10-07 00:56:18,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-07 00:56:18,838 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:18,839 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 00:56:18,839 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:18,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:18,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1195667973, now seen corresponding path program 1 times [2019-10-07 00:56:18,841 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:18,841 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:18,841 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:18,842 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:18,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:18,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:18,979 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:18,979 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:56:18,979 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:56:18,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:56:18,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:56:18,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:56:18,983 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand 6 states. [2019-10-07 00:56:19,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:19,601 INFO L93 Difference]: Finished difference Result 402 states and 725 transitions. [2019-10-07 00:56:19,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:56:19,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-07 00:56:19,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:19,611 INFO L225 Difference]: With dead ends: 402 [2019-10-07 00:56:19,611 INFO L226 Difference]: Without dead ends: 250 [2019-10-07 00:56:19,616 INFO L606 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 [2019-10-07 00:56:19,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-10-07 00:56:19,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 238. [2019-10-07 00:56:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-10-07 00:56:19,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 407 transitions. [2019-10-07 00:56:19,649 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 407 transitions. Word has length 87 [2019-10-07 00:56:19,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:19,650 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 407 transitions. [2019-10-07 00:56:19,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:56:19,650 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 407 transitions. [2019-10-07 00:56:19,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-07 00:56:19,653 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:19,653 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 00:56:19,653 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:19,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:19,654 INFO L82 PathProgramCache]: Analyzing trace with hash -2128689577, now seen corresponding path program 1 times [2019-10-07 00:56:19,654 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:19,654 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:19,655 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:19,655 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:19,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:19,823 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:19,824 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:56:19,825 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:56:19,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:56:19,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:56:19,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:56:19,827 INFO L87 Difference]: Start difference. First operand 238 states and 407 transitions. Second operand 3 states. [2019-10-07 00:56:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:20,196 INFO L93 Difference]: Finished difference Result 700 states and 1240 transitions. [2019-10-07 00:56:20,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:56:20,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-07 00:56:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:20,205 INFO L225 Difference]: With dead ends: 700 [2019-10-07 00:56:20,205 INFO L226 Difference]: Without dead ends: 467 [2019-10-07 00:56:20,207 INFO L606 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 [2019-10-07 00:56:20,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2019-10-07 00:56:20,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2019-10-07 00:56:20,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-07 00:56:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 779 transitions. [2019-10-07 00:56:20,250 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 779 transitions. Word has length 88 [2019-10-07 00:56:20,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:20,251 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 779 transitions. [2019-10-07 00:56:20,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:56:20,251 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 779 transitions. [2019-10-07 00:56:20,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-07 00:56:20,257 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:20,257 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 00:56:20,257 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:20,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:20,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1130432325, now seen corresponding path program 1 times [2019-10-07 00:56:20,258 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:20,258 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:20,258 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:20,258 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:20,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:20,388 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:20,388 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:56:20,388 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:56:20,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:56:20,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:56:20,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:56:20,391 INFO L87 Difference]: Start difference. First operand 467 states and 779 transitions. Second operand 6 states. [2019-10-07 00:56:21,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:21,027 INFO L93 Difference]: Finished difference Result 1289 states and 2330 transitions. [2019-10-07 00:56:21,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:56:21,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2019-10-07 00:56:21,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:21,038 INFO L225 Difference]: With dead ends: 1289 [2019-10-07 00:56:21,039 INFO L226 Difference]: Without dead ends: 827 [2019-10-07 00:56:21,043 INFO L606 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 [2019-10-07 00:56:21,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2019-10-07 00:56:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 799. [2019-10-07 00:56:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2019-10-07 00:56:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1252 transitions. [2019-10-07 00:56:21,119 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1252 transitions. Word has length 102 [2019-10-07 00:56:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:21,120 INFO L462 AbstractCegarLoop]: Abstraction has 799 states and 1252 transitions. [2019-10-07 00:56:21,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:56:21,120 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1252 transitions. [2019-10-07 00:56:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-07 00:56:21,129 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:21,130 INFO L385 BasicCegarLoop]: trace histogram [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, 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] [2019-10-07 00:56:21,130 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:21,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:21,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1834358454, now seen corresponding path program 1 times [2019-10-07 00:56:21,131 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:21,131 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:21,131 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:21,131 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:21,261 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:21,261 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:56:21,262 INFO L95 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 [2019-10-07 00:56:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:21,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 00:56:21,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:56:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 00:56:21,473 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:56:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 00:56:21,631 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 00:56:21,632 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 9 [2019-10-07 00:56:21,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 00:56:21,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 00:56:21,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-07 00:56:21,633 INFO L87 Difference]: Start difference. First operand 799 states and 1252 transitions. Second operand 4 states. [2019-10-07 00:56:22,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:22,100 INFO L93 Difference]: Finished difference Result 2292 states and 3670 transitions. [2019-10-07 00:56:22,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 00:56:22,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2019-10-07 00:56:22,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:22,112 INFO L225 Difference]: With dead ends: 2292 [2019-10-07 00:56:22,112 INFO L226 Difference]: Without dead ends: 1498 [2019-10-07 00:56:22,115 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-07 00:56:22,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2019-10-07 00:56:22,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1269. [2019-10-07 00:56:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2019-10-07 00:56:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1975 transitions. [2019-10-07 00:56:22,208 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1975 transitions. Word has length 111 [2019-10-07 00:56:22,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:22,209 INFO L462 AbstractCegarLoop]: Abstraction has 1269 states and 1975 transitions. [2019-10-07 00:56:22,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 00:56:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1975 transitions. [2019-10-07 00:56:22,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-07 00:56:22,215 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:22,215 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-10-07 00:56:22,423 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:56:22,424 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:22,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:22,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1929509416, now seen corresponding path program 1 times [2019-10-07 00:56:22,425 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:22,425 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:22,425 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:22,425 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:22,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:22,510 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:22,511 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:56:22,511 INFO L95 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 [2019-10-07 00:56:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:22,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:56:22,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:56:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 00:56:22,634 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:56:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 00:56:22,669 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 00:56:22,670 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-10-07 00:56:22,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:56:22,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:56:22,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 00:56:22,671 INFO L87 Difference]: Start difference. First operand 1269 states and 1975 transitions. Second operand 3 states. [2019-10-07 00:56:23,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:23,101 INFO L93 Difference]: Finished difference Result 3453 states and 5538 transitions. [2019-10-07 00:56:23,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:56:23,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2019-10-07 00:56:23,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:23,122 INFO L225 Difference]: With dead ends: 3453 [2019-10-07 00:56:23,123 INFO L226 Difference]: Without dead ends: 2189 [2019-10-07 00:56:23,129 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 00:56:23,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2019-10-07 00:56:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2189. [2019-10-07 00:56:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2189 states. [2019-10-07 00:56:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 3322 transitions. [2019-10-07 00:56:23,251 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 3322 transitions. Word has length 113 [2019-10-07 00:56:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:23,252 INFO L462 AbstractCegarLoop]: Abstraction has 2189 states and 3322 transitions. [2019-10-07 00:56:23,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:56:23,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 3322 transitions. [2019-10-07 00:56:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 00:56:23,266 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:23,267 INFO L385 BasicCegarLoop]: trace histogram [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, 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] [2019-10-07 00:56:23,471 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:56:23,471 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:23,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:23,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1060655324, now seen corresponding path program 1 times [2019-10-07 00:56:23,472 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:23,473 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:23,473 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:23,473 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:23,690 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:23,690 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:56:23,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:56:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:23,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:56:23,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:56:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 00:56:23,840 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:56:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 00:56:23,874 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 00:56:23,875 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2019-10-07 00:56:23,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 00:56:23,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 00:56:23,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-07 00:56:23,876 INFO L87 Difference]: Start difference. First operand 2189 states and 3322 transitions. Second operand 4 states. [2019-10-07 00:56:24,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:24,474 INFO L93 Difference]: Finished difference Result 5129 states and 7808 transitions. [2019-10-07 00:56:24,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 00:56:24,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-07 00:56:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:24,492 INFO L225 Difference]: With dead ends: 5129 [2019-10-07 00:56:24,492 INFO L226 Difference]: Without dead ends: 3020 [2019-10-07 00:56:24,499 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-07 00:56:24,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2019-10-07 00:56:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 2031. [2019-10-07 00:56:24,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2031 states. [2019-10-07 00:56:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2822 transitions. [2019-10-07 00:56:24,621 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2822 transitions. Word has length 119 [2019-10-07 00:56:24,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:24,621 INFO L462 AbstractCegarLoop]: Abstraction has 2031 states and 2822 transitions. [2019-10-07 00:56:24,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 00:56:24,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2822 transitions. [2019-10-07 00:56:24,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-07 00:56:24,629 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:24,629 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-07 00:56:24,834 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:56:24,834 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:24,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:24,834 INFO L82 PathProgramCache]: Analyzing trace with hash 705245009, now seen corresponding path program 1 times [2019-10-07 00:56:24,835 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:24,835 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:24,835 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:24,835 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:24,925 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 61 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-07 00:56:24,925 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:24,925 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:56:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:56:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:25,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:56:25,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:56:25,096 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 00:56:25,096 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:56:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 61 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-07 00:56:25,180 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:56:25,215 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-07 00:56:25,215 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:56:25,223 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:56:25,234 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:56:25,235 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:56:25,525 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 98 for LOIs [2019-10-07 00:56:26,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:56:26,044 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:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) 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:99) 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:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 00:56:26,051 INFO L168 Benchmark]: Toolchain (without parser) took 11307.59 ms. Allocated memory was 138.4 MB in the beginning and 395.8 MB in the end (delta: 257.4 MB). Free memory was 100.0 MB in the beginning and 87.3 MB in the end (delta: 12.8 MB). Peak memory consumption was 270.2 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:26,052 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 00:56:26,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.19 ms. Allocated memory was 138.4 MB in the beginning and 205.0 MB in the end (delta: 66.6 MB). Free memory was 99.8 MB in the beginning and 170.7 MB in the end (delta: -70.9 MB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:26,054 INFO L168 Benchmark]: Boogie Preprocessor took 110.81 ms. Allocated memory is still 205.0 MB. Free memory was 170.7 MB in the beginning and 165.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:26,055 INFO L168 Benchmark]: RCFGBuilder took 1962.63 ms. Allocated memory was 205.0 MB in the beginning and 250.6 MB in the end (delta: 45.6 MB). Free memory was 165.9 MB in the beginning and 217.1 MB in the end (delta: -51.1 MB). Peak memory consumption was 118.1 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:26,058 INFO L168 Benchmark]: TraceAbstraction took 8494.16 ms. Allocated memory was 250.6 MB in the beginning and 395.8 MB in the end (delta: 145.2 MB). Free memory was 217.1 MB in the beginning and 87.3 MB in the end (delta: 129.8 MB). Peak memory consumption was 275.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:26,067 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 735.19 ms. Allocated memory was 138.4 MB in the beginning and 205.0 MB in the end (delta: 66.6 MB). Free memory was 99.8 MB in the beginning and 170.7 MB in the end (delta: -70.9 MB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.81 ms. Allocated memory is still 205.0 MB. Free memory was 170.7 MB in the beginning and 165.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1962.63 ms. Allocated memory was 205.0 MB in the beginning and 250.6 MB in the end (delta: 45.6 MB). Free memory was 165.9 MB in the beginning and 217.1 MB in the end (delta: -51.1 MB). Peak memory consumption was 118.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8494.16 ms. Allocated memory was 250.6 MB in the beginning and 395.8 MB in the end (delta: 145.2 MB). Free memory was 217.1 MB in the beginning and 87.3 MB in the end (delta: 129.8 MB). Peak memory consumption was 275.0 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:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...