java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:41:29,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:41:29,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:41:29,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-13 21:41:29,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:41:29,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:41:29,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:41:29,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:41:29,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:41:29,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:41:29,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:41:29,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:41:29,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:41:29,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:41:29,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:41:29,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:41:29,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:41:29,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:41:29,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:41:29,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:41:29,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:41:29,630 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:41:29,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:41:29,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:41:29,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:41:29,634 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:41:29,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:41:29,635 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:41:29,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:41:29,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:41:29,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:41:29,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:41:29,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:41:29,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:41:29,636 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:41:29,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:41:29,637 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:41:29,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:41:29,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:41:29,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:41:29,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:41:29,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:41:29,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:41:29,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:41:29,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:41:29,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:41:29,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:41:29,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:41:29,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:41:29,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:41:29,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:41:29,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:41:29,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:41:29,936 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:41:29,936 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:41:29,937 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2019-10-13 21:41:29,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6813b74d7/87351e13b0474a18be64700dec306f3d/FLAG4f2070a23 [2019-10-13 21:41:30,542 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:41:30,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2019-10-13 21:41:30,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6813b74d7/87351e13b0474a18be64700dec306f3d/FLAG4f2070a23 [2019-10-13 21:41:30,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6813b74d7/87351e13b0474a18be64700dec306f3d [2019-10-13 21:41:30,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:41:30,864 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:41:30,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:41:30,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:41:30,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:41:30,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:41:30" (1/1) ... [2019-10-13 21:41:30,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b193a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:30, skipping insertion in model container [2019-10-13 21:41:30,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:41:30" (1/1) ... [2019-10-13 21:41:30,881 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:41:30,944 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:41:31,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:41:31,468 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:41:31,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:41:31,612 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:41:31,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:31 WrapperNode [2019-10-13 21:41:31,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:41:31,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:41:31,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:41:31,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:41:31,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:31" (1/1) ... [2019-10-13 21:41:31,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:31" (1/1) ... [2019-10-13 21:41:31,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:31" (1/1) ... [2019-10-13 21:41:31,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:31" (1/1) ... [2019-10-13 21:41:31,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:31" (1/1) ... [2019-10-13 21:41:31,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:31" (1/1) ... [2019-10-13 21:41:31,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:31" (1/1) ... [2019-10-13 21:41:31,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:41:31,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:41:31,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:41:31,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:41:31,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:41:31,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:41:31,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:41:31,793 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:41:31,793 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:41:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:41:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:41:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:41:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:41:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:41:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:41:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:41:33,802 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:41:33,803 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:41:33,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:41:33 BoogieIcfgContainer [2019-10-13 21:41:33,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:41:33,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:41:33,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:41:33,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:41:33,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:41:30" (1/3) ... [2019-10-13 21:41:33,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cc6e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:41:33, skipping insertion in model container [2019-10-13 21:41:33,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:31" (2/3) ... [2019-10-13 21:41:33,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cc6e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:41:33, skipping insertion in model container [2019-10-13 21:41:33,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:41:33" (3/3) ... [2019-10-13 21:41:33,823 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label52.c [2019-10-13 21:41:33,834 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:41:33,844 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:41:33,856 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:41:33,882 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:41:33,883 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:41:33,883 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:41:33,883 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:41:33,883 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:41:33,884 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:41:33,884 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:41:33,884 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:41:33,906 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-13 21:41:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-13 21:41:33,916 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:33,918 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:33,920 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:33,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:33,926 INFO L82 PathProgramCache]: Analyzing trace with hash -219364553, now seen corresponding path program 1 times [2019-10-13 21:41:33,936 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:33,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107845303] [2019-10-13 21:41:33,937 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:33,937 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:33,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:34,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107845303] [2019-10-13 21:41:34,528 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:34,529 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:41:34,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778614344] [2019-10-13 21:41:34,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:41:34,536 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:34,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:41:34,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:41:34,559 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 4 states. [2019-10-13 21:41:35,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:35,433 INFO L93 Difference]: Finished difference Result 361 states and 678 transitions. [2019-10-13 21:41:35,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:41:35,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2019-10-13 21:41:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:35,453 INFO L225 Difference]: With dead ends: 361 [2019-10-13 21:41:35,454 INFO L226 Difference]: Without dead ends: 259 [2019-10-13 21:41:35,458 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:41:35,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2019-10-13 21:41:35,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2019-10-13 21:41:35,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-10-13 21:41:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 475 transitions. [2019-10-13 21:41:35,536 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 475 transitions. Word has length 86 [2019-10-13 21:41:35,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:35,537 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 475 transitions. [2019-10-13 21:41:35,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:41:35,538 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 475 transitions. [2019-10-13 21:41:35,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 21:41:35,545 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:35,546 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:35,546 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:35,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:35,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1220270232, now seen corresponding path program 1 times [2019-10-13 21:41:35,547 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:35,547 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040499640] [2019-10-13 21:41:35,548 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:35,548 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:35,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:35,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040499640] [2019-10-13 21:41:35,675 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:35,675 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:41:35,675 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017727595] [2019-10-13 21:41:35,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:41:35,678 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:35,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:41:35,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:41:35,678 INFO L87 Difference]: Start difference. First operand 259 states and 475 transitions. Second operand 6 states. [2019-10-13 21:41:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:36,447 INFO L93 Difference]: Finished difference Result 701 states and 1310 transitions. [2019-10-13 21:41:36,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:41:36,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2019-10-13 21:41:36,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:36,453 INFO L225 Difference]: With dead ends: 701 [2019-10-13 21:41:36,454 INFO L226 Difference]: Without dead ends: 447 [2019-10-13 21:41:36,457 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:41:36,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2019-10-13 21:41:36,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2019-10-13 21:41:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2019-10-13 21:41:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 786 transitions. [2019-10-13 21:41:36,505 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 786 transitions. Word has length 104 [2019-10-13 21:41:36,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:36,506 INFO L462 AbstractCegarLoop]: Abstraction has 441 states and 786 transitions. [2019-10-13 21:41:36,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:41:36,506 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 786 transitions. [2019-10-13 21:41:36,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 21:41:36,513 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:36,513 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:36,513 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:36,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:36,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1842865376, now seen corresponding path program 1 times [2019-10-13 21:41:36,514 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:36,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844025993] [2019-10-13 21:41:36,515 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:36,515 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:36,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:36,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844025993] [2019-10-13 21:41:36,646 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:36,646 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:41:36,646 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168571943] [2019-10-13 21:41:36,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:36,649 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:36,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:36,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:36,655 INFO L87 Difference]: Start difference. First operand 441 states and 786 transitions. Second operand 3 states. [2019-10-13 21:41:37,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:37,148 INFO L93 Difference]: Finished difference Result 1133 states and 2051 transitions. [2019-10-13 21:41:37,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:37,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2019-10-13 21:41:37,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:37,159 INFO L225 Difference]: With dead ends: 1133 [2019-10-13 21:41:37,160 INFO L226 Difference]: Without dead ends: 697 [2019-10-13 21:41:37,164 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-10-13 21:41:37,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2019-10-13 21:41:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2019-10-13 21:41:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1206 transitions. [2019-10-13 21:41:37,215 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1206 transitions. Word has length 105 [2019-10-13 21:41:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:37,215 INFO L462 AbstractCegarLoop]: Abstraction has 697 states and 1206 transitions. [2019-10-13 21:41:37,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:37,216 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1206 transitions. [2019-10-13 21:41:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:41:37,236 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:37,236 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:37,236 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:37,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:37,237 INFO L82 PathProgramCache]: Analyzing trace with hash 880772869, now seen corresponding path program 1 times [2019-10-13 21:41:37,239 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:37,240 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339005648] [2019-10-13 21:41:37,240 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:37,240 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:37,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:37,445 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:37,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339005648] [2019-10-13 21:41:37,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002608394] [2019-10-13 21:41:37,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:37,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:41:37,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:41:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:37,708 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:41:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:37,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [16965687] [2019-10-13 21:41:37,856 INFO L162 IcfgInterpreter]: Started Sifa with 90 locations of interest [2019-10-13 21:41:37,856 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:41:37,863 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:41:37,872 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:41:37,872 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:41:38,201 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 89 for LOIs [2019-10-13 21:41:38,856 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:38,857 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:41:38,864 INFO L168 Benchmark]: Toolchain (without parser) took 7998.77 ms. Allocated memory was 136.8 MB in the beginning and 340.8 MB in the end (delta: 203.9 MB). Free memory was 99.2 MB in the beginning and 239.4 MB in the end (delta: -140.2 MB). Peak memory consumption was 63.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:38,865 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 136.8 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-13 21:41:38,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 748.28 ms. Allocated memory was 136.8 MB in the beginning and 203.9 MB in the end (delta: 67.1 MB). Free memory was 99.0 MB in the beginning and 170.7 MB in the end (delta: -71.7 MB). Peak memory consumption was 33.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:38,867 INFO L168 Benchmark]: Boogie Preprocessor took 117.75 ms. Allocated memory is still 203.9 MB. Free memory was 170.7 MB in the beginning and 165.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:38,868 INFO L168 Benchmark]: RCFGBuilder took 2072.87 ms. Allocated memory was 203.9 MB in the beginning and 254.8 MB in the end (delta: 50.9 MB). Free memory was 165.7 MB in the beginning and 211.5 MB in the end (delta: -45.9 MB). Peak memory consumption was 118.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:38,869 INFO L168 Benchmark]: TraceAbstraction took 5055.00 ms. Allocated memory was 254.8 MB in the beginning and 340.8 MB in the end (delta: 86.0 MB). Free memory was 211.5 MB in the beginning and 239.4 MB in the end (delta: -27.9 MB). Peak memory consumption was 58.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:38,873 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 136.8 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 748.28 ms. Allocated memory was 136.8 MB in the beginning and 203.9 MB in the end (delta: 67.1 MB). Free memory was 99.0 MB in the beginning and 170.7 MB in the end (delta: -71.7 MB). Peak memory consumption was 33.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.75 ms. Allocated memory is still 203.9 MB. Free memory was 170.7 MB in the beginning and 165.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2072.87 ms. Allocated memory was 203.9 MB in the beginning and 254.8 MB in the end (delta: 50.9 MB). Free memory was 165.7 MB in the beginning and 211.5 MB in the end (delta: -45.9 MB). Peak memory consumption was 118.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5055.00 ms. Allocated memory was 254.8 MB in the beginning and 340.8 MB in the end (delta: 86.0 MB). Free memory was 211.5 MB in the beginning and 239.4 MB in the end (delta: -27.9 MB). Peak memory consumption was 58.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...