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/Problem03_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:41:58,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:41:58,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:41:58,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:41:58,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:41:58,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:41:58,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:41:58,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:41:58,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:41:58,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:41:58,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:41:58,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:41:58,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:41:58,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:41:58,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:41:58,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:41:58,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:41:58,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:41:58,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:41:58,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:41:58,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:41:58,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:41:58,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:41:58,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:41:58,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:41:58,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:41:58,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:41:58,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:41:58,937 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 21:41:58,951 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:41:58,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:41:58,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:41:58,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:41:58,952 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:41:58,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:41:58,953 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:41:58,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:41:58,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:41:58,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:41:58,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:41:58,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:41:58,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:41:58,954 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:41:58,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:41:58,955 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:41:58,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:41:58,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:41:58,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:41:58,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:41:58,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:41:58,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:41:58,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:41:58,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:41:58,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:41:58,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:41:58,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:41:58,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:41:58,957 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 21:41:59,223 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:41:59,238 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:41:59,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:41:59,245 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:41:59,245 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:41:59,246 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label45.c [2019-10-13 21:41:59,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c02ba6816/44ed64632ee64af3a58e3b83ba6f1ef1/FLAGf4f0541fb [2019-10-13 21:41:59,993 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:41:59,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label45.c [2019-10-13 21:42:00,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c02ba6816/44ed64632ee64af3a58e3b83ba6f1ef1/FLAGf4f0541fb [2019-10-13 21:42:00,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c02ba6816/44ed64632ee64af3a58e3b83ba6f1ef1 [2019-10-13 21:42:00,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:42:00,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:42:00,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:42:00,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:42:00,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:42:00,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:42:00" (1/1) ... [2019-10-13 21:42:00,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c329617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:00, skipping insertion in model container [2019-10-13 21:42:00,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:42:00" (1/1) ... [2019-10-13 21:42:00,178 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:42:00,260 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:42:00,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:42:01,128 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:42:01,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:42:01,423 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:42:01,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:01 WrapperNode [2019-10-13 21:42:01,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:42:01,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:42:01,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:42:01,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:42:01,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:01" (1/1) ... [2019-10-13 21:42:01,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:01" (1/1) ... [2019-10-13 21:42:01,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:01" (1/1) ... [2019-10-13 21:42:01,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:01" (1/1) ... [2019-10-13 21:42:01,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:01" (1/1) ... [2019-10-13 21:42:01,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:01" (1/1) ... [2019-10-13 21:42:01,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:01" (1/1) ... [2019-10-13 21:42:01,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:42:01,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:42:01,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:42:01,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:42:01,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:01" (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 21:42:01,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:42:01,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:42:01,656 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:42:01,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:42:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:42:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:42:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:42:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:42:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:42:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:42:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:42:04,655 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:42:04,656 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:42:04,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:42:04 BoogieIcfgContainer [2019-10-13 21:42:04,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:42:04,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:42:04,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:42:04,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:42:04,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:42:00" (1/3) ... [2019-10-13 21:42:04,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4a6bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:42:04, skipping insertion in model container [2019-10-13 21:42:04,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:01" (2/3) ... [2019-10-13 21:42:04,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4a6bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:42:04, skipping insertion in model container [2019-10-13 21:42:04,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:42:04" (3/3) ... [2019-10-13 21:42:04,666 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label45.c [2019-10-13 21:42:04,677 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:42:04,685 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:42:04,698 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:42:04,726 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:42:04,726 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:42:04,727 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:42:04,727 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:42:04,727 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:42:04,727 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:42:04,727 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:42:04,727 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:42:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-13 21:42:04,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 21:42:04,766 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:42:04,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:42:04,769 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:42:04,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:42:04,775 INFO L82 PathProgramCache]: Analyzing trace with hash 135743160, now seen corresponding path program 1 times [2019-10-13 21:42:04,784 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:42:04,784 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567909493] [2019-10-13 21:42:04,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:04,785 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:04,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:42:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:42:05,613 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 21:42:05,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567909493] [2019-10-13 21:42:05,615 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:42:05,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:42:05,616 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994084071] [2019-10-13 21:42:05,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:42:05,623 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:42:05,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:42:05,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:42:05,640 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 4 states. [2019-10-13 21:42:07,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:42:07,219 INFO L93 Difference]: Finished difference Result 613 states and 1182 transitions. [2019-10-13 21:42:07,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:42:07,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-13 21:42:07,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:42:07,241 INFO L225 Difference]: With dead ends: 613 [2019-10-13 21:42:07,242 INFO L226 Difference]: Without dead ends: 448 [2019-10-13 21:42:07,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:42:07,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-10-13 21:42:07,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 301. [2019-10-13 21:42:07,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-13 21:42:07,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 575 transitions. [2019-10-13 21:42:07,319 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 575 transitions. Word has length 149 [2019-10-13 21:42:07,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:42:07,320 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 575 transitions. [2019-10-13 21:42:07,320 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:42:07,320 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 575 transitions. [2019-10-13 21:42:07,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:42:07,325 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:42:07,325 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:42:07,326 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:42:07,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:42:07,326 INFO L82 PathProgramCache]: Analyzing trace with hash -660775332, now seen corresponding path program 1 times [2019-10-13 21:42:07,326 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:42:07,326 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171160724] [2019-10-13 21:42:07,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:07,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:07,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:42:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:42:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:42:07,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171160724] [2019-10-13 21:42:07,529 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:42:07,529 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:42:07,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519370734] [2019-10-13 21:42:07,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:42:07,535 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:42:07,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:42:07,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:42:07,536 INFO L87 Difference]: Start difference. First operand 301 states and 575 transitions. Second operand 7 states. [2019-10-13 21:42:09,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:42:09,015 INFO L93 Difference]: Finished difference Result 945 states and 1893 transitions. [2019-10-13 21:42:09,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:42:09,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2019-10-13 21:42:09,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:42:09,025 INFO L225 Difference]: With dead ends: 945 [2019-10-13 21:42:09,025 INFO L226 Difference]: Without dead ends: 649 [2019-10-13 21:42:09,028 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:42:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2019-10-13 21:42:09,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 603. [2019-10-13 21:42:09,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-13 21:42:09,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1146 transitions. [2019-10-13 21:42:09,105 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1146 transitions. Word has length 165 [2019-10-13 21:42:09,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:42:09,105 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 1146 transitions. [2019-10-13 21:42:09,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:42:09,106 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1146 transitions. [2019-10-13 21:42:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-13 21:42:09,110 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:42:09,110 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:42:09,111 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:42:09,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:42:09,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1768900429, now seen corresponding path program 1 times [2019-10-13 21:42:09,111 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:42:09,111 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561477052] [2019-10-13 21:42:09,112 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:09,112 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:09,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:42:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:42:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:42:09,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561477052] [2019-10-13 21:42:09,244 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:42:09,244 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:42:09,244 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837380251] [2019-10-13 21:42:09,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:42:09,245 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:42:09,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:42:09,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:42:09,246 INFO L87 Difference]: Start difference. First operand 603 states and 1146 transitions. Second operand 6 states. [2019-10-13 21:42:10,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:42:10,476 INFO L93 Difference]: Finished difference Result 1849 states and 3645 transitions. [2019-10-13 21:42:10,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:42:10,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2019-10-13 21:42:10,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:42:10,487 INFO L225 Difference]: With dead ends: 1849 [2019-10-13 21:42:10,487 INFO L226 Difference]: Without dead ends: 1251 [2019-10-13 21:42:10,490 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 21:42:10,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2019-10-13 21:42:10,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1225. [2019-10-13 21:42:10,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2019-10-13 21:42:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2061 transitions. [2019-10-13 21:42:10,564 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2061 transitions. Word has length 172 [2019-10-13 21:42:10,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:42:10,564 INFO L462 AbstractCegarLoop]: Abstraction has 1225 states and 2061 transitions. [2019-10-13 21:42:10,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:42:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2061 transitions. [2019-10-13 21:42:10,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 21:42:10,574 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:42:10,575 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:42:10,575 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:42:10,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:42:10,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1875469752, now seen corresponding path program 1 times [2019-10-13 21:42:10,576 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:42:10,576 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062118184] [2019-10-13 21:42:10,577 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:10,577 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:10,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:42:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:42:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:42:10,848 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062118184] [2019-10-13 21:42:10,848 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858606648] [2019-10-13 21:42:10,848 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 21:42:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:42:11,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 1005 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:42:11,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:42:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:42:11,375 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:42:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:42:11,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2097660876] [2019-10-13 21:42:11,528 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-13 21:42:11,528 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:42:11,536 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:42:11,547 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:42:11,548 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:42:12,453 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 206 for LOIs [2019-10-13 21:42:12,730 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-13 21:42:13,011 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-13 21:42:13,377 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 21:42:13,993 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:42:13,994 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: ε 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: ε 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.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 21:42:14,002 INFO L168 Benchmark]: Toolchain (without parser) took 13839.26 ms. Allocated memory was 144.7 MB in the beginning and 563.6 MB in the end (delta: 418.9 MB). Free memory was 97.1 MB in the beginning and 329.0 MB in the end (delta: -231.9 MB). Peak memory consumption was 187.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:14,003 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 21:42:14,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1263.38 ms. Allocated memory was 144.7 MB in the beginning and 231.2 MB in the end (delta: 86.5 MB). Free memory was 97.1 MB in the beginning and 180.2 MB in the end (delta: -83.1 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:14,004 INFO L168 Benchmark]: Boogie Preprocessor took 179.29 ms. Allocated memory is still 231.2 MB. Free memory was 180.2 MB in the beginning and 168.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:14,005 INFO L168 Benchmark]: RCFGBuilder took 3053.78 ms. Allocated memory was 231.2 MB in the beginning and 346.6 MB in the end (delta: 115.3 MB). Free memory was 168.5 MB in the beginning and 265.8 MB in the end (delta: -97.4 MB). Peak memory consumption was 126.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:14,007 INFO L168 Benchmark]: TraceAbstraction took 9338.63 ms. Allocated memory was 346.6 MB in the beginning and 563.6 MB in the end (delta: 217.1 MB). Free memory was 265.8 MB in the beginning and 329.0 MB in the end (delta: -63.2 MB). Peak memory consumption was 153.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:14,011 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1263.38 ms. Allocated memory was 144.7 MB in the beginning and 231.2 MB in the end (delta: 86.5 MB). Free memory was 97.1 MB in the beginning and 180.2 MB in the end (delta: -83.1 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 179.29 ms. Allocated memory is still 231.2 MB. Free memory was 180.2 MB in the beginning and 168.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3053.78 ms. Allocated memory was 231.2 MB in the beginning and 346.6 MB in the end (delta: 115.3 MB). Free memory was 168.5 MB in the beginning and 265.8 MB in the end (delta: -97.4 MB). Peak memory consumption was 126.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9338.63 ms. Allocated memory was 346.6 MB in the beginning and 563.6 MB in the end (delta: 217.1 MB). Free memory was 265.8 MB in the beginning and 329.0 MB in the end (delta: -63.2 MB). Peak memory consumption was 153.8 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: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: 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...