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/Problem15_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:30:55,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:30:55,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:30:55,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 03:30:55,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:30:55,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:30:55,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:30:55,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:30:55,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:30:55,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:30:55,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:30:55,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:30:55,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:30:55,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:30:55,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:30:55,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:30:55,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 03:30:55,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:30:55,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:30:55,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:30:55,787 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 03:30:55,806 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:30:55,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:30:55,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:30:55,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:30:55,808 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:30:55,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:30:55,809 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:30:55,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:30:55,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:30:55,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:30:55,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:30:55,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:30:55,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:30:55,811 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:30:55,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:30:55,812 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:30:55,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:30:55,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:30:55,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:30:55,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:30:55,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:30:55,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:30:55,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:30:55,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:30:55,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:30:55,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:30:55,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:30:55,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:30:55,814 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 03:30:56,109 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:30:56,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:30:56,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:30:56,128 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:30:56,128 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:30:56,129 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label54.c [2019-10-07 03:30:56,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/950f20b97/90b1f0534ffb46b6bfc0e0a4a0fa3129/FLAG65fd6c6a0 [2019-10-07 03:30:56,886 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:30:56,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label54.c [2019-10-07 03:30:56,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/950f20b97/90b1f0534ffb46b6bfc0e0a4a0fa3129/FLAG65fd6c6a0 [2019-10-07 03:30:57,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/950f20b97/90b1f0534ffb46b6bfc0e0a4a0fa3129 [2019-10-07 03:30:57,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:30:57,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:30:57,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:57,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:30:57,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:30:57,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:57" (1/1) ... [2019-10-07 03:30:57,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46892c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:57, skipping insertion in model container [2019-10-07 03:30:57,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:57" (1/1) ... [2019-10-07 03:30:57,086 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:30:57,187 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:30:58,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:58,363 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:30:58,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:58,681 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:30:58,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:58 WrapperNode [2019-10-07 03:30:58,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:58,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:30:58,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:30:58,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:30:58,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:58" (1/1) ... [2019-10-07 03:30:58,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:58" (1/1) ... [2019-10-07 03:30:58,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:58" (1/1) ... [2019-10-07 03:30:58,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:58" (1/1) ... [2019-10-07 03:30:58,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:58" (1/1) ... [2019-10-07 03:30:58,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:58" (1/1) ... [2019-10-07 03:30:58,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:58" (1/1) ... [2019-10-07 03:30:58,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:30:58,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:30:58,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:30:58,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:30:58,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:58" (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 03:30:58,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:30:58,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:30:58,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:30:58,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:30:58,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:30:58,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:30:58,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:30:58,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:30:58,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:30:58,977 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:30:58,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:30:58,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:30:58,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:31:09,862 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:31:09,862 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:31:09,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:31:09 BoogieIcfgContainer [2019-10-07 03:31:09,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:31:09,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:31:09,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:31:09,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:31:09,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:30:57" (1/3) ... [2019-10-07 03:31:09,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257e29f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:31:09, skipping insertion in model container [2019-10-07 03:31:09,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:58" (2/3) ... [2019-10-07 03:31:09,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257e29f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:31:09, skipping insertion in model container [2019-10-07 03:31:09,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:31:09" (3/3) ... [2019-10-07 03:31:09,872 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label54.c [2019-10-07 03:31:09,883 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:31:09,891 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:31:09,902 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:31:09,931 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:31:09,932 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:31:09,932 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:31:09,932 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:31:09,932 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:31:09,933 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:31:09,933 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:31:09,933 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:31:09,957 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-07 03:31:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:31:09,962 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:09,963 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:31:09,964 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:09,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:09,969 INFO L82 PathProgramCache]: Analyzing trace with hash 648049517, now seen corresponding path program 1 times [2019-10-07 03:31:09,975 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:09,976 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:09,976 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:09,976 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:09,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:10,212 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 03:31:10,212 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:10,213 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:31:10,213 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 03:31:10,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 03:31:10,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 03:31:10,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:31:10,237 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 3 states. [2019-10-07 03:31:13,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:13,589 INFO L93 Difference]: Finished difference Result 720 states and 1390 transitions. [2019-10-07 03:31:13,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 03:31:13,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 03:31:13,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:13,611 INFO L225 Difference]: With dead ends: 720 [2019-10-07 03:31:13,611 INFO L226 Difference]: Without dead ends: 473 [2019-10-07 03:31:13,619 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 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 03:31:13,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2019-10-07 03:31:13,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2019-10-07 03:31:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2019-10-07 03:31:13,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 883 transitions. [2019-10-07 03:31:13,703 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 883 transitions. Word has length 11 [2019-10-07 03:31:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:13,703 INFO L462 AbstractCegarLoop]: Abstraction has 473 states and 883 transitions. [2019-10-07 03:31:13,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 03:31:13,704 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 883 transitions. [2019-10-07 03:31:13,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-07 03:31:13,706 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:13,707 INFO L385 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] [2019-10-07 03:31:13,707 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:13,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:13,707 INFO L82 PathProgramCache]: Analyzing trace with hash -723212684, now seen corresponding path program 1 times [2019-10-07 03:31:13,708 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:13,708 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:13,708 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:13,708 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:31:13,884 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:13,885 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:31:13,885 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:31:13,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:31:13,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:31:13,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:31:13,887 INFO L87 Difference]: Start difference. First operand 473 states and 883 transitions. Second operand 4 states. [2019-10-07 03:31:20,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:20,814 INFO L93 Difference]: Finished difference Result 1865 states and 3543 transitions. [2019-10-07 03:31:20,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:31:20,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-10-07 03:31:20,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:20,829 INFO L225 Difference]: With dead ends: 1865 [2019-10-07 03:31:20,829 INFO L226 Difference]: Without dead ends: 1397 [2019-10-07 03:31:20,840 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:31:20,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2019-10-07 03:31:20,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1387. [2019-10-07 03:31:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1387 states. [2019-10-07 03:31:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 2326 transitions. [2019-10-07 03:31:20,935 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 2326 transitions. Word has length 32 [2019-10-07 03:31:20,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:20,938 INFO L462 AbstractCegarLoop]: Abstraction has 1387 states and 2326 transitions. [2019-10-07 03:31:20,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:31:20,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 2326 transitions. [2019-10-07 03:31:20,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-07 03:31:20,945 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:20,945 INFO L385 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] [2019-10-07 03:31:20,946 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:20,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:20,946 INFO L82 PathProgramCache]: Analyzing trace with hash -943048960, now seen corresponding path program 1 times [2019-10-07 03:31:20,947 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:20,947 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:20,948 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:20,949 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:31:21,174 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:21,174 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:31:21,175 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:31:21,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:31:21,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:31:21,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:31:21,177 INFO L87 Difference]: Start difference. First operand 1387 states and 2326 transitions. Second operand 6 states. [2019-10-07 03:31:21,295 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2019-10-07 03:31:25,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:25,292 INFO L93 Difference]: Finished difference Result 3742 states and 6527 transitions. [2019-10-07 03:31:25,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:31:25,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2019-10-07 03:31:25,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:25,313 INFO L225 Difference]: With dead ends: 3742 [2019-10-07 03:31:25,313 INFO L226 Difference]: Without dead ends: 2360 [2019-10-07 03:31:25,318 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:31:25,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2019-10-07 03:31:25,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 2306. [2019-10-07 03:31:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2306 states. [2019-10-07 03:31:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 3772 transitions. [2019-10-07 03:31:25,500 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 3772 transitions. Word has length 49 [2019-10-07 03:31:25,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:25,502 INFO L462 AbstractCegarLoop]: Abstraction has 2306 states and 3772 transitions. [2019-10-07 03:31:25,502 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:31:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 3772 transitions. [2019-10-07 03:31:25,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-07 03:31:25,511 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:25,512 INFO L385 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] [2019-10-07 03:31:25,512 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:25,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:25,513 INFO L82 PathProgramCache]: Analyzing trace with hash -892161448, now seen corresponding path program 1 times [2019-10-07 03:31:25,513 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:25,513 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:25,513 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:25,513 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:31:25,642 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:25,643 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:31:25,643 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 03:31:25,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:31:25,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:31:25,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-07 03:31:25,644 INFO L87 Difference]: Start difference. First operand 2306 states and 3772 transitions. Second operand 5 states. [2019-10-07 03:31:28,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:31:28,711 INFO L93 Difference]: Finished difference Result 5366 states and 9036 transitions. [2019-10-07 03:31:28,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 03:31:28,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2019-10-07 03:31:28,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:31:28,733 INFO L225 Difference]: With dead ends: 5366 [2019-10-07 03:31:28,733 INFO L226 Difference]: Without dead ends: 3065 [2019-10-07 03:31:28,739 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:31:28,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2019-10-07 03:31:28,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 3040. [2019-10-07 03:31:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3040 states. [2019-10-07 03:31:28,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 4738 transitions. [2019-10-07 03:31:28,826 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 4738 transitions. Word has length 53 [2019-10-07 03:31:28,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:31:28,826 INFO L462 AbstractCegarLoop]: Abstraction has 3040 states and 4738 transitions. [2019-10-07 03:31:28,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:31:28,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 4738 transitions. [2019-10-07 03:31:28,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-07 03:31:28,830 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:31:28,830 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-07 03:31:28,830 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:31:28,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:31:28,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1442952264, now seen corresponding path program 1 times [2019-10-07 03:31:28,831 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:31:28,831 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:28,831 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:28,832 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:31:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:31:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:28,926 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:31:28,927 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:31:28,927 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:31:28,927 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 03:31:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:31:29,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:31:29,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:31:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:31:29,115 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:31:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:31:29,200 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:31:29,262 INFO L162 IcfgInterpreter]: Started Sifa with 49 locations of interest [2019-10-07 03:31:29,262 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:31:29,269 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:31:29,277 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:31:29,278 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:31:29,542 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 56 for LOIs [2019-10-07 03:31:29,704 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 34 [2019-10-07 03:31:30,031 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6634 conjuctions. This might take some time... [2019-10-07 03:31:30,218 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 34 [2019-10-07 03:31:30,481 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6634 conjuctions. This might take some time... [2019-10-07 03:31:30,588 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 27 [2019-10-07 03:31:30,769 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 27 [2019-10-07 03:31:31,373 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:31:31,374 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 03:31:31,380 INFO L168 Benchmark]: Toolchain (without parser) took 34318.78 ms. Allocated memory was 144.2 MB in the beginning and 555.7 MB in the end (delta: 411.6 MB). Free memory was 95.6 MB in the beginning and 487.0 MB in the end (delta: -391.4 MB). Peak memory consumption was 352.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:31,382 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 03:31:31,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1616.17 ms. Allocated memory was 144.2 MB in the beginning and 233.3 MB in the end (delta: 89.1 MB). Free memory was 95.2 MB in the beginning and 161.4 MB in the end (delta: -66.2 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:31,384 INFO L168 Benchmark]: Boogie Preprocessor took 211.55 ms. Allocated memory is still 233.3 MB. Free memory was 161.4 MB in the beginning and 149.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:31,388 INFO L168 Benchmark]: RCFGBuilder took 10968.94 ms. Allocated memory was 233.3 MB in the beginning and 337.6 MB in the end (delta: 104.3 MB). Free memory was 149.2 MB in the beginning and 274.7 MB in the end (delta: -125.5 MB). Peak memory consumption was 169.9 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:31,389 INFO L168 Benchmark]: TraceAbstraction took 21512.47 ms. Allocated memory was 337.6 MB in the beginning and 555.7 MB in the end (delta: 218.1 MB). Free memory was 274.7 MB in the beginning and 487.0 MB in the end (delta: -212.3 MB). Peak memory consumption was 337.7 MB. Max. memory is 7.1 GB. [2019-10-07 03:31:31,398 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1616.17 ms. Allocated memory was 144.2 MB in the beginning and 233.3 MB in the end (delta: 89.1 MB). Free memory was 95.2 MB in the beginning and 161.4 MB in the end (delta: -66.2 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 211.55 ms. Allocated memory is still 233.3 MB. Free memory was 161.4 MB in the beginning and 149.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10968.94 ms. Allocated memory was 233.3 MB in the beginning and 337.6 MB in the end (delta: 104.3 MB). Free memory was 149.2 MB in the beginning and 274.7 MB in the end (delta: -125.5 MB). Peak memory consumption was 169.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21512.47 ms. Allocated memory was 337.6 MB in the beginning and 555.7 MB in the end (delta: 218.1 MB). Free memory was 274.7 MB in the beginning and 487.0 MB in the end (delta: -212.3 MB). Peak memory consumption was 337.7 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...