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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:57:25,726 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-07 00:57:25,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:57:25,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:57:25,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:57:25,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 00:57:25,824 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:57:25,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:57:25,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:57:25,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:57:25,827 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:57:25,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:57:25,827 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:57:25,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:57:25,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:57:25,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:57:25,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:57:25,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:57:25,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:57:25,830 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:57:25,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:57:25,830 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:57:25,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:57:25,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:57:25,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:57:25,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:57:25,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:57:25,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:57:25,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:57:25,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:57:25,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:57:25,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:57:25,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:57:25,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:57:25,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 00:57:26,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:57:26,151 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:57:26,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:57:26,156 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:57:26,157 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:57:26,157 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label08.c [2019-10-07 00:57:26,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c4012575/fa4544c0d1ca4905b3cbeea8cbc9ffff/FLAG0b2c59b65 [2019-10-07 00:57:26,840 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:57:26,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label08.c [2019-10-07 00:57:26,861 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c4012575/fa4544c0d1ca4905b3cbeea8cbc9ffff/FLAG0b2c59b65 [2019-10-07 00:57:27,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c4012575/fa4544c0d1ca4905b3cbeea8cbc9ffff [2019-10-07 00:57:27,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:57:27,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:57:27,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:57:27,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:57:27,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:57:27,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:57:27" (1/1) ... [2019-10-07 00:57:27,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a8f9260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:57:27, skipping insertion in model container [2019-10-07 00:57:27,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:57:27" (1/1) ... [2019-10-07 00:57:27,077 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:57:27,129 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:57:27,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:57:27,662 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:57:27,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:57:27,781 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:57:27,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:57:27 WrapperNode [2019-10-07 00:57:27,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:57:27,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:57:27,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:57:27,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:57:27,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:57:27" (1/1) ... [2019-10-07 00:57:27,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:57:27" (1/1) ... [2019-10-07 00:57:27,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:57:27" (1/1) ... [2019-10-07 00:57:27,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:57:27" (1/1) ... [2019-10-07 00:57:27,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:57:27" (1/1) ... [2019-10-07 00:57:27,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:57:27" (1/1) ... [2019-10-07 00:57:27,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:57:27" (1/1) ... [2019-10-07 00:57:27,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:57:27,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:57:27,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:57:27,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:57:27,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:57:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:57:27,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:57:27,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:57:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:57:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:57:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:57:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:57:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:57:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:57:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:57:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:57:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:57:30,048 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:57:30,049 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:57:30,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:57:30 BoogieIcfgContainer [2019-10-07 00:57:30,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:57:30,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:57:30,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:57:30,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:57:30,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:57:27" (1/3) ... [2019-10-07 00:57:30,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e45f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:57:30, skipping insertion in model container [2019-10-07 00:57:30,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:57:27" (2/3) ... [2019-10-07 00:57:30,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e45f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:57:30, skipping insertion in model container [2019-10-07 00:57:30,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:57:30" (3/3) ... [2019-10-07 00:57:30,069 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label08.c [2019-10-07 00:57:30,083 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:57:30,095 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:57:30,107 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:57:30,146 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:57:30,147 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:57:30,147 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:57:30,147 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:57:30,148 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:57:30,148 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:57:30,149 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:57:30,149 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:57:30,170 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-07 00:57:30,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-07 00:57:30,180 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:57:30,182 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:57:30,184 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:57:30,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:57:30,190 INFO L82 PathProgramCache]: Analyzing trace with hash -219359945, now seen corresponding path program 1 times [2019-10-07 00:57:30,200 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:57:30,200 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:57:30,200 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:57:30,201 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:57:30,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:57:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:57:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:57:30,640 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:57:30,640 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:57:30,641 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:57:30,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:57:30,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:57:30,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:57:30,670 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 3 states. [2019-10-07 00:57:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:57:31,306 INFO L93 Difference]: Finished difference Result 273 states and 508 transitions. [2019-10-07 00:57:31,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:57:31,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-10-07 00:57:31,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:57:31,324 INFO L225 Difference]: With dead ends: 273 [2019-10-07 00:57:31,324 INFO L226 Difference]: Without dead ends: 175 [2019-10-07 00:57:31,333 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:57:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-07 00:57:31,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2019-10-07 00:57:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-10-07 00:57:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 312 transitions. [2019-10-07 00:57:31,408 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 312 transitions. Word has length 86 [2019-10-07 00:57:31,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:57:31,443 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 312 transitions. [2019-10-07 00:57:31,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:57:31,443 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 312 transitions. [2019-10-07 00:57:31,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-07 00:57:31,448 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:57:31,449 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:57:31,449 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:57:31,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:57:31,450 INFO L82 PathProgramCache]: Analyzing trace with hash -701894724, now seen corresponding path program 1 times [2019-10-07 00:57:31,450 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:57:31,450 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:57:31,450 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:57:31,451 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:57:31,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:57:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:57:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 00:57:31,686 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:57:31,686 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:57:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:57:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:57:31,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:57:31,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:57:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:57:31,883 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:57:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:57:31,933 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 00:57:31,933 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2019-10-07 00:57:31,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:57:31,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:57:31,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-07 00:57:31,937 INFO L87 Difference]: Start difference. First operand 175 states and 312 transitions. Second operand 3 states. [2019-10-07 00:57:32,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:57:32,431 INFO L93 Difference]: Finished difference Result 345 states and 626 transitions. [2019-10-07 00:57:32,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:57:32,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2019-10-07 00:57:32,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:57:32,437 INFO L225 Difference]: With dead ends: 345 [2019-10-07 00:57:32,438 INFO L226 Difference]: Without dead ends: 343 [2019-10-07 00:57:32,439 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-07 00:57:32,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2019-10-07 00:57:32,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 259. [2019-10-07 00:57:32,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-10-07 00:57:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 475 transitions. [2019-10-07 00:57:32,463 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 475 transitions. Word has length 94 [2019-10-07 00:57:32,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:57:32,464 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 475 transitions. [2019-10-07 00:57:32,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:57:32,464 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 475 transitions. [2019-10-07 00:57:32,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-07 00:57:32,470 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:57:32,470 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 00:57:32,674 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:57:32,675 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:57:32,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:57:32,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1307298401, now seen corresponding path program 1 times [2019-10-07 00:57:32,677 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:57:32,677 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:57:32,677 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:57:32,678 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:57:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:57:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:57:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:57:32,824 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:57:32,825 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:57:32,825 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:57:32,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:57:32,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:57:32,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:57:32,827 INFO L87 Difference]: Start difference. First operand 259 states and 475 transitions. Second operand 6 states. [2019-10-07 00:57:33,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:57:33,513 INFO L93 Difference]: Finished difference Result 797 states and 1529 transitions. [2019-10-07 00:57:33,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:57:33,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-10-07 00:57:33,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:57:33,520 INFO L225 Difference]: With dead ends: 797 [2019-10-07 00:57:33,520 INFO L226 Difference]: Without dead ends: 543 [2019-10-07 00:57:33,523 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 00:57:33,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2019-10-07 00:57:33,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 527. [2019-10-07 00:57:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2019-10-07 00:57:33,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 944 transitions. [2019-10-07 00:57:33,570 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 944 transitions. Word has length 108 [2019-10-07 00:57:33,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:57:33,570 INFO L462 AbstractCegarLoop]: Abstraction has 527 states and 944 transitions. [2019-10-07 00:57:33,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:57:33,570 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 944 transitions. [2019-10-07 00:57:33,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-07 00:57:33,577 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:57:33,577 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 00:57:33,577 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:57:33,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:57:33,578 INFO L82 PathProgramCache]: Analyzing trace with hash -852387033, now seen corresponding path program 1 times [2019-10-07 00:57:33,578 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:57:33,578 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:57:33,579 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:57:33,579 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:57:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:57:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:57:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:57:33,715 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:57:33,716 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:57:33,716 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:57:33,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:57:33,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:57:33,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:57:33,718 INFO L87 Difference]: Start difference. First operand 527 states and 944 transitions. Second operand 3 states. [2019-10-07 00:57:34,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:57:34,121 INFO L93 Difference]: Finished difference Result 1049 states and 1898 transitions. [2019-10-07 00:57:34,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:57:34,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2019-10-07 00:57:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:57:34,126 INFO L225 Difference]: With dead ends: 1049 [2019-10-07 00:57:34,126 INFO L226 Difference]: Without dead ends: 527 [2019-10-07 00:57:34,129 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:57:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2019-10-07 00:57:34,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 441. [2019-10-07 00:57:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2019-10-07 00:57:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 721 transitions. [2019-10-07 00:57:34,152 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 721 transitions. Word has length 112 [2019-10-07 00:57:34,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:57:34,153 INFO L462 AbstractCegarLoop]: Abstraction has 441 states and 721 transitions. [2019-10-07 00:57:34,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:57:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 721 transitions. [2019-10-07 00:57:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-07 00:57:34,156 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:57:34,156 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:57:34,157 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:57:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:57:34,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1860595300, now seen corresponding path program 1 times [2019-10-07 00:57:34,158 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:57:34,158 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:57:34,158 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:57:34,158 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:57:34,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:57:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:57:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:57:34,226 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:57:34,226 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:57:34,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:57:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:57:34,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:57:34,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:57:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:57:34,357 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:57:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:57:34,489 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:57:34,526 INFO L162 IcfgInterpreter]: Started Sifa with 90 locations of interest [2019-10-07 00:57:34,526 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:57:34,533 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:57:34,542 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:57:34,543 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:57:34,897 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 87 for LOIs [2019-10-07 00:57:35,449 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:57:35,450 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 00:57:35,458 INFO L168 Benchmark]: Toolchain (without parser) took 8396.26 ms. Allocated memory was 145.8 MB in the beginning and 333.4 MB in the end (delta: 187.7 MB). Free memory was 101.0 MB in the beginning and 158.0 MB in the end (delta: -57.0 MB). Peak memory consumption was 130.7 MB. Max. memory is 7.1 GB. [2019-10-07 00:57:35,459 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 00:57:35,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.59 ms. Allocated memory was 145.8 MB in the beginning and 205.0 MB in the end (delta: 59.2 MB). Free memory was 100.8 MB in the beginning and 171.9 MB in the end (delta: -71.1 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2019-10-07 00:57:35,460 INFO L168 Benchmark]: Boogie Preprocessor took 114.96 ms. Allocated memory is still 205.0 MB. Free memory was 171.9 MB in the beginning and 167.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2019-10-07 00:57:35,461 INFO L168 Benchmark]: RCFGBuilder took 2154.12 ms. Allocated memory was 205.0 MB in the beginning and 250.6 MB in the end (delta: 45.6 MB). Free memory was 167.1 MB in the beginning and 202.9 MB in the end (delta: -35.9 MB). Peak memory consumption was 118.7 MB. Max. memory is 7.1 GB. [2019-10-07 00:57:35,462 INFO L168 Benchmark]: TraceAbstraction took 5400.48 ms. Allocated memory was 250.6 MB in the beginning and 333.4 MB in the end (delta: 82.8 MB). Free memory was 202.9 MB in the beginning and 158.0 MB in the end (delta: 44.9 MB). Peak memory consumption was 127.8 MB. Max. memory is 7.1 GB. [2019-10-07 00:57:35,467 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 721.59 ms. Allocated memory was 145.8 MB in the beginning and 205.0 MB in the end (delta: 59.2 MB). Free memory was 100.8 MB in the beginning and 171.9 MB in the end (delta: -71.1 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.96 ms. Allocated memory is still 205.0 MB. Free memory was 171.9 MB in the beginning and 167.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2154.12 ms. Allocated memory was 205.0 MB in the beginning and 250.6 MB in the end (delta: 45.6 MB). Free memory was 167.1 MB in the beginning and 202.9 MB in the end (delta: -35.9 MB). Peak memory consumption was 118.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5400.48 ms. Allocated memory was 250.6 MB in the beginning and 333.4 MB in the end (delta: 82.8 MB). Free memory was 202.9 MB in the beginning and 158.0 MB in the end (delta: 44.9 MB). Peak memory consumption was 127.8 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: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...