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/Problem12_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 02:44:15,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 02:44:15,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 02:44:15,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 02:44:15,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 02:44:15,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 02:44:15,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 02:44:15,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 02:44:15,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 02:44:15,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 02:44:15,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 02:44:15,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 02:44:15,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 02:44:15,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 02:44:15,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 02:44:15,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 02:44:15,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 02:44:15,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 02:44:15,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 02:44:15,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 02:44:15,657 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 02:44:15,695 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 02:44:15,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 02:44:15,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 02:44:15,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 02:44:15,698 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 02:44:15,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 02:44:15,701 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 02:44:15,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 02:44:15,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 02:44:15,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 02:44:15,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 02:44:15,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 02:44:15,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 02:44:15,703 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 02:44:15,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 02:44:15,703 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 02:44:15,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 02:44:15,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 02:44:15,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 02:44:15,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 02:44:15,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 02:44:15,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 02:44:15,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 02:44:15,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 02:44:15,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 02:44:15,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 02:44:15,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 02:44:15,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 02:44:15,710 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 02:44:16,058 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 02:44:16,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 02:44:16,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 02:44:16,077 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 02:44:16,077 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 02:44:16,078 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label33.c [2019-10-07 02:44:16,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/122020b6b/8615aecd4b4e439b96daa88e74f8ef64/FLAG5b074df27 [2019-10-07 02:44:16,918 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 02:44:16,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label33.c [2019-10-07 02:44:16,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/122020b6b/8615aecd4b4e439b96daa88e74f8ef64/FLAG5b074df27 [2019-10-07 02:44:17,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/122020b6b/8615aecd4b4e439b96daa88e74f8ef64 [2019-10-07 02:44:17,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 02:44:17,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 02:44:17,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 02:44:17,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 02:44:17,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 02:44:17,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:44:17" (1/1) ... [2019-10-07 02:44:17,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f82b407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:17, skipping insertion in model container [2019-10-07 02:44:17,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:44:17" (1/1) ... [2019-10-07 02:44:17,051 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 02:44:17,197 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 02:44:18,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 02:44:18,616 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 02:44:19,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 02:44:19,287 INFO L192 MainTranslator]: Completed translation [2019-10-07 02:44:19,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:19 WrapperNode [2019-10-07 02:44:19,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 02:44:19,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 02:44:19,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 02:44:19,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 02:44:19,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:19" (1/1) ... [2019-10-07 02:44:19,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:19" (1/1) ... [2019-10-07 02:44:19,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:19" (1/1) ... [2019-10-07 02:44:19,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:19" (1/1) ... [2019-10-07 02:44:19,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:19" (1/1) ... [2019-10-07 02:44:19,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:19" (1/1) ... [2019-10-07 02:44:19,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:19" (1/1) ... [2019-10-07 02:44:19,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 02:44:19,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 02:44:19,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 02:44:19,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 02:44:19,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:19" (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 02:44:19,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 02:44:19,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 02:44:19,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 02:44:19,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 02:44:19,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 02:44:19,669 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-07 02:44:19,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 02:44:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 02:44:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 02:44:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 02:44:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-07 02:44:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 02:44:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 02:44:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 02:44:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 02:44:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 02:44:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 02:44:26,047 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 02:44:26,048 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 02:44:26,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:44:26 BoogieIcfgContainer [2019-10-07 02:44:26,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 02:44:26,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 02:44:26,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 02:44:26,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 02:44:26,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:44:17" (1/3) ... [2019-10-07 02:44:26,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f647246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:44:26, skipping insertion in model container [2019-10-07 02:44:26,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:44:19" (2/3) ... [2019-10-07 02:44:26,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f647246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:44:26, skipping insertion in model container [2019-10-07 02:44:26,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:44:26" (3/3) ... [2019-10-07 02:44:26,070 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label33.c [2019-10-07 02:44:26,081 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 02:44:26,093 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 02:44:26,104 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 02:44:26,137 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 02:44:26,137 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 02:44:26,138 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 02:44:26,138 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 02:44:26,138 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 02:44:26,138 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 02:44:26,138 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 02:44:26,138 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 02:44:26,172 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states. [2019-10-07 02:44:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 02:44:26,178 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:44:26,179 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:44:26,181 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:44:26,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:44:26,187 INFO L82 PathProgramCache]: Analyzing trace with hash -874907570, now seen corresponding path program 1 times [2019-10-07 02:44:26,197 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:44:26,198 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:44:26,198 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:44:26,198 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:44:26,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:44:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:44:26,470 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 02:44:26,472 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:44:26,473 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:44:26,473 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 02:44:26,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 02:44:26,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 02:44:26,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 02:44:26,502 INFO L87 Difference]: Start difference. First operand 694 states. Second operand 4 states. [2019-10-07 02:44:34,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:44:34,642 INFO L93 Difference]: Finished difference Result 2753 states and 5428 transitions. [2019-10-07 02:44:34,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 02:44:34,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-07 02:44:34,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:44:34,686 INFO L225 Difference]: With dead ends: 2753 [2019-10-07 02:44:34,687 INFO L226 Difference]: Without dead ends: 2052 [2019-10-07 02:44:34,706 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 02:44:34,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2019-10-07 02:44:34,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 2039. [2019-10-07 02:44:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2019-10-07 02:44:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 3482 transitions. [2019-10-07 02:44:34,943 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 3482 transitions. Word has length 11 [2019-10-07 02:44:34,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:44:34,944 INFO L462 AbstractCegarLoop]: Abstraction has 2039 states and 3482 transitions. [2019-10-07 02:44:34,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 02:44:34,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 3482 transitions. [2019-10-07 02:44:34,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-07 02:44:34,949 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:44:34,950 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:44:34,951 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:44:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:44:34,952 INFO L82 PathProgramCache]: Analyzing trace with hash 631913090, now seen corresponding path program 1 times [2019-10-07 02:44:34,953 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:44:34,953 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:44:34,953 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:44:34,954 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:44:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:44:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:44:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:44:35,130 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:44:35,130 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:44:35,131 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 02:44:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:44:35,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 02:44:35,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:44:35,394 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 02:44:35,395 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:44:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:44:35,516 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 02:44:35,517 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2019-10-07 02:44:35,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:44:35,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:44:35,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-07 02:44:35,520 INFO L87 Difference]: Start difference. First operand 2039 states and 3482 transitions. Second operand 5 states. [2019-10-07 02:44:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:44:43,018 INFO L93 Difference]: Finished difference Result 6165 states and 10639 transitions. [2019-10-07 02:44:43,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 02:44:43,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-10-07 02:44:43,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:44:43,050 INFO L225 Difference]: With dead ends: 6165 [2019-10-07 02:44:43,051 INFO L226 Difference]: Without dead ends: 4131 [2019-10-07 02:44:43,058 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-10-07 02:44:43,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2019-10-07 02:44:43,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 4090. [2019-10-07 02:44:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4090 states. [2019-10-07 02:44:43,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 6343 transitions. [2019-10-07 02:44:43,205 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 6343 transitions. Word has length 43 [2019-10-07 02:44:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:44:43,207 INFO L462 AbstractCegarLoop]: Abstraction has 4090 states and 6343 transitions. [2019-10-07 02:44:43,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:44:43,207 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 6343 transitions. [2019-10-07 02:44:43,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-07 02:44:43,219 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:44:43,219 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-07 02:44:43,423 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:44:43,423 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:44:43,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:44:43,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1751250257, now seen corresponding path program 1 times [2019-10-07 02:44:43,424 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:44:43,424 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:44:43,424 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:44:43,425 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:44:43,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:44:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:44:43,677 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:44:43,677 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:44:43,677 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:44:43,677 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 02:44:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:44:43,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 02:44:43,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:44:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 02:44:43,833 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:44:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:44:43,962 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 02:44:43,962 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2019-10-07 02:44:43,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:44:43,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:44:43,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 02:44:43,965 INFO L87 Difference]: Start difference. First operand 4090 states and 6343 transitions. Second operand 5 states. [2019-10-07 02:44:51,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:44:51,253 INFO L93 Difference]: Finished difference Result 12397 states and 19929 transitions. [2019-10-07 02:44:51,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 02:44:51,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2019-10-07 02:44:51,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:44:51,302 INFO L225 Difference]: With dead ends: 12397 [2019-10-07 02:44:51,302 INFO L226 Difference]: Without dead ends: 8312 [2019-10-07 02:44:51,313 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 138 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-07 02:44:51,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8312 states. [2019-10-07 02:44:51,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8312 to 8077. [2019-10-07 02:44:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8077 states. [2019-10-07 02:44:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8077 states to 8077 states and 12664 transitions. [2019-10-07 02:44:51,550 INFO L78 Accepts]: Start accepts. Automaton has 8077 states and 12664 transitions. Word has length 72 [2019-10-07 02:44:51,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:44:51,550 INFO L462 AbstractCegarLoop]: Abstraction has 8077 states and 12664 transitions. [2019-10-07 02:44:51,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:44:51,551 INFO L276 IsEmpty]: Start isEmpty. Operand 8077 states and 12664 transitions. [2019-10-07 02:44:51,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-07 02:44:51,553 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:44:51,553 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 02:44:51,758 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:44:51,758 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:44:51,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:44:51,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1780491271, now seen corresponding path program 1 times [2019-10-07 02:44:51,759 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:44:51,759 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:44:51,759 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:44:51,759 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:44:51,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:44:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:44:51,992 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:44:51,993 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:44:51,993 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:44:51,993 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 02:44:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:44:52,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 02:44:52,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:44:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 02:44:52,156 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:44:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:44:52,230 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 02:44:52,231 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2019-10-07 02:44:52,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:44:52,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:44:52,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-07 02:44:52,232 INFO L87 Difference]: Start difference. First operand 8077 states and 12664 transitions. Second operand 5 states. [2019-10-07 02:44:58,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:44:58,717 INFO L93 Difference]: Finished difference Result 24369 states and 40341 transitions. [2019-10-07 02:44:58,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 02:44:58,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2019-10-07 02:44:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:44:58,819 INFO L225 Difference]: With dead ends: 24369 [2019-10-07 02:44:58,819 INFO L226 Difference]: Without dead ends: 16297 [2019-10-07 02:44:58,843 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-07 02:44:58,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16297 states. [2019-10-07 02:44:59,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16297 to 15677. [2019-10-07 02:44:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15677 states. [2019-10-07 02:44:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15677 states to 15677 states and 23472 transitions. [2019-10-07 02:44:59,381 INFO L78 Accepts]: Start accepts. Automaton has 15677 states and 23472 transitions. Word has length 84 [2019-10-07 02:44:59,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:44:59,384 INFO L462 AbstractCegarLoop]: Abstraction has 15677 states and 23472 transitions. [2019-10-07 02:44:59,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:44:59,384 INFO L276 IsEmpty]: Start isEmpty. Operand 15677 states and 23472 transitions. [2019-10-07 02:44:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-07 02:44:59,388 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:44:59,388 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-07 02:44:59,601 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:44:59,601 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:44:59,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:44:59,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1245389896, now seen corresponding path program 1 times [2019-10-07 02:44:59,602 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:44:59,602 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:44:59,602 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:44:59,602 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:44:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:44:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:44:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 02:44:59,813 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:44:59,813 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:44:59,813 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 02:44:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:44:59,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 02:44:59,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:44:59,979 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 02:44:59,980 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:45:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 02:45:00,062 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 02:45:00,093 INFO L162 IcfgInterpreter]: Started Sifa with 61 locations of interest [2019-10-07 02:45:00,093 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 02:45:00,099 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 02:45:00,107 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 02:45:00,108 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 02:45:00,281 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 61 for LOIs [2019-10-07 02:45:00,473 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 43 [2019-10-07 02:45:00,828 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 43 [2019-10-07 02:45:01,897 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 18 [2019-10-07 02:45:01,951 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 18 [2019-10-07 02:45:02,236 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:45:02,237 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 02:45:02,244 INFO L168 Benchmark]: Toolchain (without parser) took 45210.81 ms. Allocated memory was 135.8 MB in the beginning and 899.2 MB in the end (delta: 763.4 MB). Free memory was 88.0 MB in the beginning and 684.6 MB in the end (delta: -596.6 MB). Peak memory consumption was 166.8 MB. Max. memory is 7.1 GB. [2019-10-07 02:45:02,245 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 135.8 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 02:45:02,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2254.68 ms. Allocated memory was 135.8 MB in the beginning and 262.1 MB in the end (delta: 126.4 MB). Free memory was 87.8 MB in the beginning and 184.0 MB in the end (delta: -96.1 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. [2019-10-07 02:45:02,247 INFO L168 Benchmark]: Boogie Preprocessor took 304.22 ms. Allocated memory is still 262.1 MB. Free memory was 184.0 MB in the beginning and 156.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2019-10-07 02:45:02,248 INFO L168 Benchmark]: RCFGBuilder took 6461.08 ms. Allocated memory was 262.1 MB in the beginning and 424.1 MB in the end (delta: 162.0 MB). Free memory was 156.7 MB in the beginning and 116.4 MB in the end (delta: 40.2 MB). Peak memory consumption was 214.7 MB. Max. memory is 7.1 GB. [2019-10-07 02:45:02,249 INFO L168 Benchmark]: TraceAbstraction took 36182.06 ms. Allocated memory was 424.1 MB in the beginning and 899.2 MB in the end (delta: 475.0 MB). Free memory was 116.4 MB in the beginning and 684.6 MB in the end (delta: -568.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 02:45:02,254 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 135.8 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2254.68 ms. Allocated memory was 135.8 MB in the beginning and 262.1 MB in the end (delta: 126.4 MB). Free memory was 87.8 MB in the beginning and 184.0 MB in the end (delta: -96.1 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 304.22 ms. Allocated memory is still 262.1 MB. Free memory was 184.0 MB in the beginning and 156.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6461.08 ms. Allocated memory was 262.1 MB in the beginning and 424.1 MB in the end (delta: 162.0 MB). Free memory was 156.7 MB in the beginning and 116.4 MB in the end (delta: 40.2 MB). Peak memory consumption was 214.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36182.06 ms. Allocated memory was 424.1 MB in the beginning and 899.2 MB in the end (delta: 475.0 MB). Free memory was 116.4 MB in the beginning and 684.6 MB in the end (delta: -568.2 MB). There was no memory consumed. 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...