java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 02:45:00,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 02:45:00,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 02:45:00,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 02:45:00,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 02:45:00,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 02:45:00,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 02:45:00,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 02:45:00,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 02:45:00,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 02:45:00,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 02:45:00,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 02:45:00,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 02:45:00,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 02:45:00,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 02:45:00,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 02:45:00,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 02:45:00,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 02:45:00,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 02:45:00,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 02:45:00,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 02:45:00,897 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 02:45:00,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 02:45:00,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 02:45:00,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 02:45:00,900 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 02:45:00,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 02:45:00,900 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 02:45:00,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 02:45:00,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 02:45:00,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 02:45:00,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 02:45:00,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 02:45:00,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 02:45:00,903 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 02:45:00,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 02:45:00,904 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 02:45:00,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 02:45:00,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 02:45:00,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 02:45:00,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 02:45:00,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 02:45:00,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 02:45:00,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 02:45:00,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 02:45:00,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 02:45:00,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 02:45:00,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 02:45:00,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 02:45:00,906 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 02:45:01,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 02:45:01,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 02:45:01,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 02:45:01,257 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 02:45:01,257 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 02:45:01,258 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label59.c [2019-10-07 02:45:01,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ebd5b61/df3140ee320f4de0902816795d872084/FLAG79a7e5694 [2019-10-07 02:45:02,189 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 02:45:02,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label59.c [2019-10-07 02:45:02,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ebd5b61/df3140ee320f4de0902816795d872084/FLAG79a7e5694 [2019-10-07 02:45:02,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ebd5b61/df3140ee320f4de0902816795d872084 [2019-10-07 02:45:02,719 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 02:45:02,721 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 02:45:02,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 02:45:02,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 02:45:02,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 02:45:02,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:45:02" (1/1) ... [2019-10-07 02:45:02,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47dc5e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:45:02, skipping insertion in model container [2019-10-07 02:45:02,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:45:02" (1/1) ... [2019-10-07 02:45:02,738 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 02:45:02,884 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 02:45:04,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 02:45:04,362 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 02:45:05,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 02:45:05,055 INFO L192 MainTranslator]: Completed translation [2019-10-07 02:45:05,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:45:05 WrapperNode [2019-10-07 02:45:05,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 02:45:05,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 02:45:05,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 02:45:05,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 02:45:05,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:45:05" (1/1) ... [2019-10-07 02:45:05,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:45:05" (1/1) ... [2019-10-07 02:45:05,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:45:05" (1/1) ... [2019-10-07 02:45:05,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:45:05" (1/1) ... [2019-10-07 02:45:05,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:45:05" (1/1) ... [2019-10-07 02:45:05,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:45:05" (1/1) ... [2019-10-07 02:45:05,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:45:05" (1/1) ... [2019-10-07 02:45:05,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 02:45:05,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 02:45:05,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 02:45:05,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 02:45:05,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:45:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 02:45:05,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 02:45:05,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 02:45:05,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 02:45:05,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 02:45:05,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 02:45:05,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-07 02:45:05,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 02:45:05,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 02:45:05,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 02:45:05,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 02:45:05,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-07 02:45:05,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 02:45:05,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 02:45:05,422 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 02:45:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 02:45:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 02:45:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 02:45:12,227 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 02:45:12,228 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 02:45:12,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:45:12 BoogieIcfgContainer [2019-10-07 02:45:12,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 02:45:12,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 02:45:12,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 02:45:12,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 02:45:12,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:45:02" (1/3) ... [2019-10-07 02:45:12,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450fe8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:45:12, skipping insertion in model container [2019-10-07 02:45:12,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:45:05" (2/3) ... [2019-10-07 02:45:12,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450fe8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:45:12, skipping insertion in model container [2019-10-07 02:45:12,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:45:12" (3/3) ... [2019-10-07 02:45:12,248 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label59.c [2019-10-07 02:45:12,263 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 02:45:12,273 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 02:45:12,285 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 02:45:12,319 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 02:45:12,320 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 02:45:12,320 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 02:45:12,320 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 02:45:12,320 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 02:45:12,320 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 02:45:12,320 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 02:45:12,320 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 02:45:12,353 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states. [2019-10-07 02:45:12,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 02:45:12,359 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:45:12,360 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:45:12,362 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:45:12,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:45:12,368 INFO L82 PathProgramCache]: Analyzing trace with hash -874908850, now seen corresponding path program 1 times [2019-10-07 02:45:12,378 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:45:12,378 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:12,378 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:12,378 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:12,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:45:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:45:12,684 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:12,684 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:45:12,685 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 02:45:12,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 02:45:12,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 02:45:12,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 02:45:12,707 INFO L87 Difference]: Start difference. First operand 694 states. Second operand 3 states. [2019-10-07 02:45:17,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:45:17,643 INFO L93 Difference]: Finished difference Result 2068 states and 4065 transitions. [2019-10-07 02:45:17,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 02:45:17,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 02:45:17,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:45:17,678 INFO L225 Difference]: With dead ends: 2068 [2019-10-07 02:45:17,678 INFO L226 Difference]: Without dead ends: 1371 [2019-10-07 02:45:17,688 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 02:45:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2019-10-07 02:45:17,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1367. [2019-10-07 02:45:17,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1367 states. [2019-10-07 02:45:17,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 2628 transitions. [2019-10-07 02:45:17,825 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 2628 transitions. Word has length 11 [2019-10-07 02:45:17,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:45:17,826 INFO L462 AbstractCegarLoop]: Abstraction has 1367 states and 2628 transitions. [2019-10-07 02:45:17,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 02:45:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 2628 transitions. [2019-10-07 02:45:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-07 02:45:17,829 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:45:17,830 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:45:17,830 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:45:17,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:45:17,831 INFO L82 PathProgramCache]: Analyzing trace with hash 133475068, now seen corresponding path program 1 times [2019-10-07 02:45:17,831 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:45:17,832 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:17,832 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:17,832 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:45:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:17,948 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 02:45:17,948 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:17,949 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:45:17,949 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 02:45:17,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:45:17,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:45:17,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-07 02:45:17,951 INFO L87 Difference]: Start difference. First operand 1367 states and 2628 transitions. Second operand 5 states. [2019-10-07 02:45:24,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:45:24,201 INFO L93 Difference]: Finished difference Result 4145 states and 7983 transitions. [2019-10-07 02:45:24,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 02:45:24,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-10-07 02:45:24,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:45:24,222 INFO L225 Difference]: With dead ends: 4145 [2019-10-07 02:45:24,222 INFO L226 Difference]: Without dead ends: 2783 [2019-10-07 02:45:24,226 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 02:45:24,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2019-10-07 02:45:24,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2754. [2019-10-07 02:45:24,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2754 states. [2019-10-07 02:45:24,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 4674 transitions. [2019-10-07 02:45:24,348 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 4674 transitions. Word has length 21 [2019-10-07 02:45:24,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:45:24,349 INFO L462 AbstractCegarLoop]: Abstraction has 2754 states and 4674 transitions. [2019-10-07 02:45:24,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:45:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 4674 transitions. [2019-10-07 02:45:24,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-07 02:45:24,354 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:45:24,354 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] [2019-10-07 02:45:24,355 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:45:24,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:45:24,356 INFO L82 PathProgramCache]: Analyzing trace with hash -411106032, now seen corresponding path program 1 times [2019-10-07 02:45:24,357 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:45:24,357 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:24,358 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:24,358 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:24,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:45:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:45:24,519 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:24,519 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:45:24,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:45:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:24,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 02:45:24,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:45:24,654 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 02:45:24,654 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:45:24,690 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 02:45:24,690 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 02:45:24,691 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2019-10-07 02:45:24,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 02:45:24,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 02:45:24,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-07 02:45:24,692 INFO L87 Difference]: Start difference. First operand 2754 states and 4674 transitions. Second operand 4 states. [2019-10-07 02:45:31,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:45:31,755 INFO L93 Difference]: Finished difference Result 10993 states and 19157 transitions. [2019-10-07 02:45:31,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 02:45:31,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-07 02:45:31,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:45:31,805 INFO L225 Difference]: With dead ends: 10993 [2019-10-07 02:45:31,805 INFO L226 Difference]: Without dead ends: 8244 [2019-10-07 02:45:31,813 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-07 02:45:31,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8244 states. [2019-10-07 02:45:32,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8244 to 7921. [2019-10-07 02:45:32,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7921 states. [2019-10-07 02:45:32,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 12067 transitions. [2019-10-07 02:45:32,082 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 12067 transitions. Word has length 27 [2019-10-07 02:45:32,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:45:32,083 INFO L462 AbstractCegarLoop]: Abstraction has 7921 states and 12067 transitions. [2019-10-07 02:45:32,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 02:45:32,083 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 12067 transitions. [2019-10-07 02:45:32,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-07 02:45:32,088 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:45:32,089 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] [2019-10-07 02:45:32,292 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:45:32,293 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:45:32,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:45:32,293 INFO L82 PathProgramCache]: Analyzing trace with hash 529687159, now seen corresponding path program 1 times [2019-10-07 02:45:32,293 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:45:32,294 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:32,294 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:32,294 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:32,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:45:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:32,442 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 02:45:32,442 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:32,443 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:45:32,443 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 02:45:32,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 02:45:32,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 02:45:32,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 02:45:32,445 INFO L87 Difference]: Start difference. First operand 7921 states and 12067 transitions. Second operand 6 states. [2019-10-07 02:45:38,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:45:38,292 INFO L93 Difference]: Finished difference Result 16843 states and 26727 transitions. [2019-10-07 02:45:38,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:45:38,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2019-10-07 02:45:38,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:45:38,341 INFO L225 Difference]: With dead ends: 16843 [2019-10-07 02:45:38,341 INFO L226 Difference]: Without dead ends: 8927 [2019-10-07 02:45:38,361 INFO L606 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 [2019-10-07 02:45:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8927 states. [2019-10-07 02:45:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8927 to 7629. [2019-10-07 02:45:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7629 states. [2019-10-07 02:45:38,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7629 states to 7629 states and 11183 transitions. [2019-10-07 02:45:38,601 INFO L78 Accepts]: Start accepts. Automaton has 7629 states and 11183 transitions. Word has length 36 [2019-10-07 02:45:38,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:45:38,602 INFO L462 AbstractCegarLoop]: Abstraction has 7629 states and 11183 transitions. [2019-10-07 02:45:38,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 02:45:38,603 INFO L276 IsEmpty]: Start isEmpty. Operand 7629 states and 11183 transitions. [2019-10-07 02:45:38,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-07 02:45:38,614 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:45:38,615 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-07 02:45:38,615 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:45:38,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:45:38,616 INFO L82 PathProgramCache]: Analyzing trace with hash -859607307, now seen corresponding path program 1 times [2019-10-07 02:45:38,616 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:45:38,616 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:38,617 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:38,617 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:45:38,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:45:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:45:38,754 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:45:38,755 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:45:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:45:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:45:38,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 02:45:38,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:45:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:45:38,957 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:45:39,027 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:45:39,028 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 02:45:39,066 INFO L162 IcfgInterpreter]: Started Sifa with 32 locations of interest [2019-10-07 02:45:39,066 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 02:45:39,073 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 02:45:39,085 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 02:45:39,086 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 02:45:39,297 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 57 for LOIs [2019-10-07 02:45:39,436 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 38 [2019-10-07 02:45:39,666 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 38 [2019-10-07 02:45:39,844 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 23 [2019-10-07 02:45:39,903 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 23 [2019-10-07 02:45:40,179 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:45:40,181 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 02:45:40,188 INFO L168 Benchmark]: Toolchain (without parser) took 37466.13 ms. Allocated memory was 137.9 MB in the beginning and 701.0 MB in the end (delta: 563.1 MB). Free memory was 88.2 MB in the beginning and 310.3 MB in the end (delta: -222.1 MB). Peak memory consumption was 341.0 MB. Max. memory is 7.1 GB. [2019-10-07 02:45:40,189 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 02:45:40,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2335.30 ms. Allocated memory was 137.9 MB in the beginning and 255.3 MB in the end (delta: 117.4 MB). Free memory was 88.0 MB in the beginning and 172.7 MB in the end (delta: -84.8 MB). Peak memory consumption was 117.5 MB. Max. memory is 7.1 GB. [2019-10-07 02:45:40,191 INFO L168 Benchmark]: Boogie Preprocessor took 295.94 ms. Allocated memory is still 255.3 MB. Free memory was 172.7 MB in the beginning and 146.0 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2019-10-07 02:45:40,192 INFO L168 Benchmark]: RCFGBuilder took 6878.34 ms. Allocated memory was 255.3 MB in the beginning and 406.8 MB in the end (delta: 151.5 MB). Free memory was 146.0 MB in the beginning and 288.3 MB in the end (delta: -142.3 MB). Peak memory consumption was 251.7 MB. Max. memory is 7.1 GB. [2019-10-07 02:45:40,193 INFO L168 Benchmark]: TraceAbstraction took 27949.44 ms. Allocated memory was 406.8 MB in the beginning and 701.0 MB in the end (delta: 294.1 MB). Free memory was 288.3 MB in the beginning and 310.3 MB in the end (delta: -22.0 MB). Peak memory consumption was 272.2 MB. Max. memory is 7.1 GB. [2019-10-07 02:45:40,208 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 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2335.30 ms. Allocated memory was 137.9 MB in the beginning and 255.3 MB in the end (delta: 117.4 MB). Free memory was 88.0 MB in the beginning and 172.7 MB in the end (delta: -84.8 MB). Peak memory consumption was 117.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 295.94 ms. Allocated memory is still 255.3 MB. Free memory was 172.7 MB in the beginning and 146.0 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6878.34 ms. Allocated memory was 255.3 MB in the beginning and 406.8 MB in the end (delta: 151.5 MB). Free memory was 146.0 MB in the beginning and 288.3 MB in the end (delta: -142.3 MB). Peak memory consumption was 251.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27949.44 ms. Allocated memory was 406.8 MB in the beginning and 701.0 MB in the end (delta: 294.1 MB). Free memory was 288.3 MB in the beginning and 310.3 MB in the end (delta: -22.0 MB). Peak memory consumption was 272.2 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...