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/product-lines/elevator_spec13_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:59:08,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:59:08,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:59:08,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:59:08,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:59:08,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:59:08,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:59:08,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:59:08,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:59:08,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:59:08,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:59:08,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:59:08,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:59:08,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:59:08,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:59:08,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:59:08,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:59:08,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:59:08,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:59:08,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:59:08,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:59:08,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:59:08,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:59:08,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:59:08,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:59:08,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:59:08,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:59:08,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:59:08,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:59:08,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:59:08,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:59:08,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:59:08,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:59:08,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:59:08,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:59:08,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:59:08,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:59:08,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:59:08,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:59:08,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:59:08,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:59:08,509 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 13:59:08,544 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:59:08,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:59:08,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:59:08,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:59:08,548 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:59:08,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:59:08,549 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:59:08,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:59:08,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:59:08,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:59:08,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:59:08,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:59:08,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:59:08,550 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:59:08,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:59:08,550 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:59:08,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:59:08,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:59:08,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:59:08,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:59:08,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:59:08,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:59:08,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:59:08,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:59:08,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:59:08,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:59:08,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:59:08,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:59:08,554 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 13:59:08,840 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:59:08,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:59:08,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:59:08,858 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:59:08,858 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:59:08,859 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c [2019-10-07 13:59:08,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a5186d0f/b933ce921ac5419f83369e2004e0e46b/FLAG4b6eb8a3a [2019-10-07 13:59:09,564 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:59:09,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c [2019-10-07 13:59:09,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a5186d0f/b933ce921ac5419f83369e2004e0e46b/FLAG4b6eb8a3a [2019-10-07 13:59:09,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a5186d0f/b933ce921ac5419f83369e2004e0e46b [2019-10-07 13:59:09,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:59:09,787 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:59:09,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:59:09,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:59:09,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:59:09,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:59:09" (1/1) ... [2019-10-07 13:59:09,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d4771d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:59:09, skipping insertion in model container [2019-10-07 13:59:09,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:59:09" (1/1) ... [2019-10-07 13:59:09,804 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:59:09,890 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:59:10,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:59:10,651 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:59:10,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:59:10,891 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:59:10,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:59:10 WrapperNode [2019-10-07 13:59:10,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:59:10,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:59:10,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:59:10,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:59:10,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:59:10" (1/1) ... [2019-10-07 13:59:10,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:59:10" (1/1) ... [2019-10-07 13:59:10,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:59:10" (1/1) ... [2019-10-07 13:59:10,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:59:10" (1/1) ... [2019-10-07 13:59:11,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:59:10" (1/1) ... [2019-10-07 13:59:11,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:59:10" (1/1) ... [2019-10-07 13:59:11,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:59:10" (1/1) ... [2019-10-07 13:59:11,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:59:11,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:59:11,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:59:11,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:59:11,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:59:10" (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 13:59:11,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:59:11,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:59:11,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 13:59:11,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 13:59:11,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 13:59:11,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 13:59:11,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 13:59:11,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 13:59:11,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 13:59:11,205 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 13:59:11,206 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 13:59:11,206 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 13:59:11,206 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 13:59:11,206 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 13:59:11,206 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 13:59:11,206 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 13:59:11,207 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 13:59:11,207 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 13:59:11,207 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 13:59:11,207 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 13:59:11,207 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 13:59:11,208 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 13:59:11,208 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 13:59:11,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 13:59:11,208 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 13:59:11,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:59:11,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-07 13:59:11,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-07 13:59:11,209 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 13:59:11,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 13:59:11,209 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 13:59:11,209 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 13:59:11,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 13:59:11,210 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 13:59:11,210 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 13:59:11,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 13:59:11,210 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 13:59:11,210 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 13:59:11,211 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 13:59:11,211 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 13:59:11,211 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 13:59:11,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 13:59:11,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 13:59:11,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 13:59:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 13:59:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 13:59:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 13:59:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-07 13:59:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-07 13:59:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 13:59:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-07 13:59:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-07 13:59:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 13:59:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-07 13:59:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-07 13:59:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-07 13:59:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-07 13:59:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 13:59:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 13:59:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 13:59:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 13:59:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 13:59:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 13:59:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 13:59:11,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 13:59:11,215 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 13:59:11,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 13:59:11,215 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-07 13:59:11,215 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-07 13:59:11,215 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-07 13:59:11,215 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-07 13:59:11,216 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 13:59:11,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 13:59:11,216 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 13:59:11,216 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-07 13:59:11,216 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-07 13:59:11,216 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-07 13:59:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-07 13:59:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 13:59:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 13:59:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 13:59:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-07 13:59:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-07 13:59:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 13:59:11,218 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-07 13:59:11,218 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-07 13:59:11,218 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 13:59:11,218 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 13:59:11,218 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 13:59:11,218 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 13:59:11,219 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 13:59:11,219 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 13:59:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:59:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:59:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 13:59:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:59:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:59:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 13:59:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:59:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:59:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:59:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:59:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 13:59:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:59:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 13:59:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 13:59:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:59:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 13:59:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 13:59:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 13:59:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 13:59:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 13:59:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 13:59:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 13:59:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 13:59:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 13:59:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 13:59:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 13:59:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 13:59:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 13:59:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 13:59:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 13:59:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 13:59:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 13:59:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 13:59:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 13:59:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 13:59:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 13:59:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 13:59:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 13:59:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 13:59:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 13:59:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 13:59:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 13:59:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 13:59:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 13:59:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 13:59:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 13:59:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 13:59:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:59:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 13:59:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 13:59:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-07 13:59:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 13:59:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-07 13:59:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 13:59:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 13:59:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 13:59:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 13:59:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 13:59:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 13:59:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 13:59:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 13:59:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 13:59:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 13:59:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 13:59:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 13:59:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 13:59:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 13:59:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 13:59:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 13:59:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 13:59:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 13:59:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 13:59:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 13:59:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-07 13:59:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-07 13:59:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-07 13:59:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-07 13:59:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-07 13:59:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-07 13:59:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-07 13:59:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-07 13:59:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 13:59:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 13:59:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 13:59:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 13:59:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-07 13:59:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-07 13:59:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-07 13:59:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-07 13:59:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 13:59:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 13:59:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-07 13:59:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-07 13:59:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-07 13:59:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-07 13:59:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 13:59:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 13:59:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 13:59:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-07 13:59:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-07 13:59:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-07 13:59:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-07 13:59:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 13:59:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 13:59:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:59:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 13:59:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:59:16,437 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:59:16,437 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 13:59:16,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:59:16 BoogieIcfgContainer [2019-10-07 13:59:16,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:59:16,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:59:16,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:59:16,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:59:16,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:59:09" (1/3) ... [2019-10-07 13:59:16,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce14fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:59:16, skipping insertion in model container [2019-10-07 13:59:16,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:59:10" (2/3) ... [2019-10-07 13:59:16,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce14fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:59:16, skipping insertion in model container [2019-10-07 13:59:16,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:59:16" (3/3) ... [2019-10-07 13:59:16,447 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_productSimulator.cil.c [2019-10-07 13:59:16,457 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:59:16,468 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:59:16,480 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:59:16,514 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:59:16,514 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:59:16,514 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:59:16,514 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:59:16,515 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:59:16,515 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:59:16,515 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:59:16,515 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:59:16,551 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states. [2019-10-07 13:59:16,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-07 13:59:16,573 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:16,574 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:16,577 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:16,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:16,583 INFO L82 PathProgramCache]: Analyzing trace with hash 718339452, now seen corresponding path program 1 times [2019-10-07 13:59:16,592 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:16,592 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:16,593 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:16,593 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-07 13:59:17,284 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:17,285 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:59:17,285 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 13:59:17,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 13:59:17,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 13:59:17,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:59:17,310 INFO L87 Difference]: Start difference. First operand 726 states. Second operand 6 states. [2019-10-07 13:59:17,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:17,561 INFO L93 Difference]: Finished difference Result 1190 states and 1756 transitions. [2019-10-07 13:59:17,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:59:17,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2019-10-07 13:59:17,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:17,609 INFO L225 Difference]: With dead ends: 1190 [2019-10-07 13:59:17,609 INFO L226 Difference]: Without dead ends: 598 [2019-10-07 13:59:17,626 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:59:17,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-10-07 13:59:17,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-10-07 13:59:17,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-10-07 13:59:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 866 transitions. [2019-10-07 13:59:17,778 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 866 transitions. Word has length 121 [2019-10-07 13:59:17,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:17,786 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 866 transitions. [2019-10-07 13:59:17,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 13:59:17,787 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 866 transitions. [2019-10-07 13:59:17,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-07 13:59:17,801 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:17,801 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:17,802 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:17,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:17,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1365224182, now seen corresponding path program 1 times [2019-10-07 13:59:17,804 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:17,804 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:17,804 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:17,804 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:17,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-07 13:59:18,116 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:18,117 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:59:18,117 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 13:59:18,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:59:18,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:59:18,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:59:18,122 INFO L87 Difference]: Start difference. First operand 598 states and 866 transitions. Second operand 4 states. [2019-10-07 13:59:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:18,964 INFO L93 Difference]: Finished difference Result 1166 states and 1713 transitions. [2019-10-07 13:59:18,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:59:18,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-07 13:59:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:18,970 INFO L225 Difference]: With dead ends: 1166 [2019-10-07 13:59:18,970 INFO L226 Difference]: Without dead ends: 596 [2019-10-07 13:59:18,974 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:59:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2019-10-07 13:59:19,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2019-10-07 13:59:19,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2019-10-07 13:59:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 858 transitions. [2019-10-07 13:59:19,014 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 858 transitions. Word has length 122 [2019-10-07 13:59:19,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:19,016 INFO L462 AbstractCegarLoop]: Abstraction has 596 states and 858 transitions. [2019-10-07 13:59:19,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:59:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 858 transitions. [2019-10-07 13:59:19,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-07 13:59:19,026 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:19,026 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:19,026 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:19,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:19,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1199005239, now seen corresponding path program 1 times [2019-10-07 13:59:19,027 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:19,027 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:19,028 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:19,028 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-07 13:59:19,397 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:19,397 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:59:19,397 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:59:19,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:59:19,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:59:19,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:59:19,399 INFO L87 Difference]: Start difference. First operand 596 states and 858 transitions. Second operand 3 states. [2019-10-07 13:59:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:19,511 INFO L93 Difference]: Finished difference Result 1681 states and 2461 transitions. [2019-10-07 13:59:19,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:59:19,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2019-10-07 13:59:19,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:19,527 INFO L225 Difference]: With dead ends: 1681 [2019-10-07 13:59:19,527 INFO L226 Difference]: Without dead ends: 1141 [2019-10-07 13:59:19,531 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 13:59:19,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2019-10-07 13:59:19,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1137. [2019-10-07 13:59:19,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1137 states. [2019-10-07 13:59:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1656 transitions. [2019-10-07 13:59:19,627 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1656 transitions. Word has length 123 [2019-10-07 13:59:19,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:19,628 INFO L462 AbstractCegarLoop]: Abstraction has 1137 states and 1656 transitions. [2019-10-07 13:59:19,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:59:19,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1656 transitions. [2019-10-07 13:59:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-07 13:59:19,634 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:19,635 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:19,635 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:19,636 INFO L82 PathProgramCache]: Analyzing trace with hash 186326343, now seen corresponding path program 1 times [2019-10-07 13:59:19,636 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:19,636 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:19,636 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:19,636 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-07 13:59:19,891 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:19,891 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:19,892 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 13:59:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:20,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 3243 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-07 13:59:20,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-07 13:59:20,823 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:20,914 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:59:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-07 13:59:21,058 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:59:21,058 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [4] total 11 [2019-10-07 13:59:21,059 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 13:59:21,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 13:59:21,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-07 13:59:21,060 INFO L87 Difference]: Start difference. First operand 1137 states and 1656 transitions. Second operand 9 states. [2019-10-07 13:59:29,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:29,785 INFO L93 Difference]: Finished difference Result 5712 states and 8722 transitions. [2019-10-07 13:59:29,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 13:59:29,790 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2019-10-07 13:59:29,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:29,823 INFO L225 Difference]: With dead ends: 5712 [2019-10-07 13:59:29,824 INFO L226 Difference]: Without dead ends: 4660 [2019-10-07 13:59:29,830 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-10-07 13:59:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4660 states. [2019-10-07 13:59:30,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4660 to 4553. [2019-10-07 13:59:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4553 states. [2019-10-07 13:59:30,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 7004 transitions. [2019-10-07 13:59:30,067 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 7004 transitions. Word has length 124 [2019-10-07 13:59:30,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:30,068 INFO L462 AbstractCegarLoop]: Abstraction has 4553 states and 7004 transitions. [2019-10-07 13:59:30,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 13:59:30,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 7004 transitions. [2019-10-07 13:59:30,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-07 13:59:30,078 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:30,078 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:30,287 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:30,287 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:30,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:30,288 INFO L82 PathProgramCache]: Analyzing trace with hash 381916500, now seen corresponding path program 1 times [2019-10-07 13:59:30,289 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:30,291 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:30,291 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:30,292 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:30,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-07 13:59:30,580 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:30,580 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:59:30,580 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:59:30,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:59:30,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:59:30,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:59:30,588 INFO L87 Difference]: Start difference. First operand 4553 states and 7004 transitions. Second operand 7 states. [2019-10-07 13:59:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:35,907 INFO L93 Difference]: Finished difference Result 13815 states and 21540 transitions. [2019-10-07 13:59:35,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 13:59:35,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2019-10-07 13:59:35,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:35,982 INFO L225 Difference]: With dead ends: 13815 [2019-10-07 13:59:35,983 INFO L226 Difference]: Without dead ends: 9348 [2019-10-07 13:59:36,013 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:59:36,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9348 states. [2019-10-07 13:59:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9348 to 9071. [2019-10-07 13:59:36,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9071 states. [2019-10-07 13:59:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9071 states to 9071 states and 14050 transitions. [2019-10-07 13:59:36,599 INFO L78 Accepts]: Start accepts. Automaton has 9071 states and 14050 transitions. Word has length 173 [2019-10-07 13:59:36,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:36,602 INFO L462 AbstractCegarLoop]: Abstraction has 9071 states and 14050 transitions. [2019-10-07 13:59:36,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:59:36,602 INFO L276 IsEmpty]: Start isEmpty. Operand 9071 states and 14050 transitions. [2019-10-07 13:59:36,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-07 13:59:36,616 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:36,616 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:36,617 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:36,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1647600245, now seen corresponding path program 1 times [2019-10-07 13:59:36,618 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:36,618 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:36,618 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:36,618 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-07 13:59:36,986 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:36,986 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:36,987 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 13:59:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:37,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 3423 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:59:37,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-07 13:59:37,747 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-07 13:59:38,002 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:38,002 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-10-07 13:59:38,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:59:38,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:59:38,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:59:38,003 INFO L87 Difference]: Start difference. First operand 9071 states and 14050 transitions. Second operand 4 states. [2019-10-07 13:59:38,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:38,395 INFO L93 Difference]: Finished difference Result 18154 states and 28454 transitions. [2019-10-07 13:59:38,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:59:38,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-07 13:59:38,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:38,472 INFO L225 Difference]: With dead ends: 18154 [2019-10-07 13:59:38,473 INFO L226 Difference]: Without dead ends: 9167 [2019-10-07 13:59:38,528 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:59:38,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9167 states. [2019-10-07 13:59:39,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9167 to 9167. [2019-10-07 13:59:39,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9167 states. [2019-10-07 13:59:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9167 states to 9167 states and 14146 transitions. [2019-10-07 13:59:39,811 INFO L78 Accepts]: Start accepts. Automaton has 9167 states and 14146 transitions. Word has length 177 [2019-10-07 13:59:39,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:39,814 INFO L462 AbstractCegarLoop]: Abstraction has 9167 states and 14146 transitions. [2019-10-07 13:59:39,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:59:39,815 INFO L276 IsEmpty]: Start isEmpty. Operand 9167 states and 14146 transitions. [2019-10-07 13:59:39,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-07 13:59:39,825 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:39,825 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:40,035 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:40,035 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:40,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:40,036 INFO L82 PathProgramCache]: Analyzing trace with hash -19205950, now seen corresponding path program 1 times [2019-10-07 13:59:40,037 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:40,037 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:40,037 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:40,037 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:40,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-07 13:59:40,287 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:40,287 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:41,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 3428 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:59:41,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:41,097 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-07 13:59:41,097 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-07 13:59:41,298 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:59:41,298 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-07 13:59:41,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:59:41,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:59:41,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:59:41,300 INFO L87 Difference]: Start difference. First operand 9167 states and 14146 transitions. Second operand 5 states. [2019-10-07 13:59:41,457 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2019-10-07 13:59:41,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:41,876 INFO L93 Difference]: Finished difference Result 18298 states and 28534 transitions. [2019-10-07 13:59:41,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:59:41,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2019-10-07 13:59:41,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:41,946 INFO L225 Difference]: With dead ends: 18298 [2019-10-07 13:59:41,947 INFO L226 Difference]: Without dead ends: 9151 [2019-10-07 13:59:41,985 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:59:41,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9151 states. [2019-10-07 13:59:42,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9151 to 9151. [2019-10-07 13:59:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9151 states. [2019-10-07 13:59:42,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9151 states to 9151 states and 14082 transitions. [2019-10-07 13:59:42,439 INFO L78 Accepts]: Start accepts. Automaton has 9151 states and 14082 transitions. Word has length 179 [2019-10-07 13:59:42,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:42,445 INFO L462 AbstractCegarLoop]: Abstraction has 9151 states and 14082 transitions. [2019-10-07 13:59:42,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:59:42,446 INFO L276 IsEmpty]: Start isEmpty. Operand 9151 states and 14082 transitions. [2019-10-07 13:59:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-07 13:59:42,464 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:42,465 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:42,673 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:42,674 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:42,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash 49998038, now seen corresponding path program 1 times [2019-10-07 13:59:42,675 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:42,675 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:42,675 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:42,675 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-07 13:59:42,874 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:42,875 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:59:42,875 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:59:42,876 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:59:42,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:59:42,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:59:42,876 INFO L87 Difference]: Start difference. First operand 9151 states and 14082 transitions. Second operand 3 states. [2019-10-07 13:59:43,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:43,496 INFO L93 Difference]: Finished difference Result 11416 states and 17536 transitions. [2019-10-07 13:59:43,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:59:43,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2019-10-07 13:59:43,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:43,532 INFO L225 Difference]: With dead ends: 11416 [2019-10-07 13:59:43,532 INFO L226 Difference]: Without dead ends: 6947 [2019-10-07 13:59:43,551 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 13:59:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6947 states. [2019-10-07 13:59:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6947 to 6943. [2019-10-07 13:59:43,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6943 states. [2019-10-07 13:59:44,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 10598 transitions. [2019-10-07 13:59:44,007 INFO L78 Accepts]: Start accepts. Automaton has 6943 states and 10598 transitions. Word has length 181 [2019-10-07 13:59:44,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:44,008 INFO L462 AbstractCegarLoop]: Abstraction has 6943 states and 10598 transitions. [2019-10-07 13:59:44,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:59:44,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6943 states and 10598 transitions. [2019-10-07 13:59:44,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-07 13:59:44,026 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:44,026 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:44,027 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:44,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:44,027 INFO L82 PathProgramCache]: Analyzing trace with hash -97757722, now seen corresponding path program 1 times [2019-10-07 13:59:44,028 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:44,028 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:44,028 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:44,028 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:44,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-07 13:59:44,292 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:44,292 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:44,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:44,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 3432 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:59:44,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:45,000 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-07 13:59:45,000 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 13:59:45,273 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:45,273 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-10-07 13:59:45,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:59:45,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:59:45,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:59:45,274 INFO L87 Difference]: Start difference. First operand 6943 states and 10598 transitions. Second operand 5 states. [2019-10-07 13:59:47,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:47,086 INFO L93 Difference]: Finished difference Result 17074 states and 26758 transitions. [2019-10-07 13:59:47,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:59:47,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2019-10-07 13:59:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:47,144 INFO L225 Difference]: With dead ends: 17074 [2019-10-07 13:59:47,144 INFO L226 Difference]: Without dead ends: 10215 [2019-10-07 13:59:47,174 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 352 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:59:47,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10215 states. [2019-10-07 13:59:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10215 to 10109. [2019-10-07 13:59:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10109 states. [2019-10-07 13:59:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10109 states to 10109 states and 15378 transitions. [2019-10-07 13:59:47,697 INFO L78 Accepts]: Start accepts. Automaton has 10109 states and 15378 transitions. Word has length 180 [2019-10-07 13:59:47,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:47,700 INFO L462 AbstractCegarLoop]: Abstraction has 10109 states and 15378 transitions. [2019-10-07 13:59:47,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:59:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 10109 states and 15378 transitions. [2019-10-07 13:59:47,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-07 13:59:47,709 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:47,710 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:47,919 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:47,919 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:47,919 INFO L82 PathProgramCache]: Analyzing trace with hash 810194010, now seen corresponding path program 1 times [2019-10-07 13:59:47,920 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:47,920 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:47,920 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:47,920 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:47,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-07 13:59:48,158 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:48,158 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:48,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:49,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 3433 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-07 13:59:49,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-07 13:59:49,358 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-07 13:59:49,718 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:49,718 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2019-10-07 13:59:49,718 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:59:49,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:59:49,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-07 13:59:49,719 INFO L87 Difference]: Start difference. First operand 10109 states and 15378 transitions. Second operand 7 states. [2019-10-07 13:59:51,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:51,713 INFO L93 Difference]: Finished difference Result 21739 states and 33517 transitions. [2019-10-07 13:59:51,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 13:59:51,714 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2019-10-07 13:59:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:51,795 INFO L225 Difference]: With dead ends: 21739 [2019-10-07 13:59:51,795 INFO L226 Difference]: Without dead ends: 11714 [2019-10-07 13:59:51,837 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 351 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-10-07 13:59:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11714 states. [2019-10-07 13:59:53,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11714 to 11605. [2019-10-07 13:59:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11605 states. [2019-10-07 13:59:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11605 states to 11605 states and 17783 transitions. [2019-10-07 13:59:53,315 INFO L78 Accepts]: Start accepts. Automaton has 11605 states and 17783 transitions. Word has length 181 [2019-10-07 13:59:53,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:53,315 INFO L462 AbstractCegarLoop]: Abstraction has 11605 states and 17783 transitions. [2019-10-07 13:59:53,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:59:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 11605 states and 17783 transitions. [2019-10-07 13:59:53,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-07 13:59:53,325 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:53,326 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:53,540 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:53,541 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:53,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:53,541 INFO L82 PathProgramCache]: Analyzing trace with hash 2065341733, now seen corresponding path program 1 times [2019-10-07 13:59:53,541 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:53,541 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:53,542 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:53,542 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 13:59:53,735 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:53,735 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:53,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:54,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 3435 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:59:54,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 13:59:54,446 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 13:59:54,668 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:59:54,668 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 8 [2019-10-07 13:59:54,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:59:54,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:59:54,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:59:54,670 INFO L87 Difference]: Start difference. First operand 11605 states and 17783 transitions. Second operand 5 states. [2019-10-07 13:59:55,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:55,007 INFO L93 Difference]: Finished difference Result 23294 states and 36347 transitions. [2019-10-07 13:59:55,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:59:55,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2019-10-07 13:59:55,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:55,073 INFO L225 Difference]: With dead ends: 23294 [2019-10-07 13:59:55,074 INFO L226 Difference]: Without dead ends: 11797 [2019-10-07 13:59:55,111 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 357 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:59:55,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11797 states. [2019-10-07 13:59:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11797 to 11677. [2019-10-07 13:59:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11677 states. [2019-10-07 13:59:55,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11677 states to 11677 states and 17855 transitions. [2019-10-07 13:59:55,853 INFO L78 Accepts]: Start accepts. Automaton has 11677 states and 17855 transitions. Word has length 181 [2019-10-07 13:59:55,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:55,854 INFO L462 AbstractCegarLoop]: Abstraction has 11677 states and 17855 transitions. [2019-10-07 13:59:55,854 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:59:55,854 INFO L276 IsEmpty]: Start isEmpty. Operand 11677 states and 17855 transitions. [2019-10-07 13:59:55,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-07 13:59:55,864 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:55,864 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:56,074 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:56,075 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:56,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:56,076 INFO L82 PathProgramCache]: Analyzing trace with hash 582070102, now seen corresponding path program 1 times [2019-10-07 13:59:56,076 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:56,076 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:56,077 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:56,077 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 13:59:56,314 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:56,314 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:56,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:57,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 3439 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:59:57,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 13:59:57,052 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:57,241 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 13:59:57,241 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:57,242 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2019-10-07 13:59:57,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:59:57,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:59:57,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:59:57,243 INFO L87 Difference]: Start difference. First operand 11677 states and 17855 transitions. Second operand 4 states. [2019-10-07 13:59:57,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:57,840 INFO L93 Difference]: Finished difference Result 23694 states and 36991 transitions. [2019-10-07 13:59:57,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:59:57,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 183 [2019-10-07 13:59:57,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:57,904 INFO L225 Difference]: With dead ends: 23694 [2019-10-07 13:59:57,904 INFO L226 Difference]: Without dead ends: 12127 [2019-10-07 13:59:57,944 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 368 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:59:57,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12127 states. [2019-10-07 13:59:58,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12127 to 12019. [2019-10-07 13:59:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12019 states. [2019-10-07 13:59:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12019 states to 12019 states and 18413 transitions. [2019-10-07 13:59:58,725 INFO L78 Accepts]: Start accepts. Automaton has 12019 states and 18413 transitions. Word has length 183 [2019-10-07 13:59:58,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:58,726 INFO L462 AbstractCegarLoop]: Abstraction has 12019 states and 18413 transitions. [2019-10-07 13:59:58,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:59:58,726 INFO L276 IsEmpty]: Start isEmpty. Operand 12019 states and 18413 transitions. [2019-10-07 13:59:58,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-07 13:59:58,736 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:58,736 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:58,944 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:58,944 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:58,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:58,945 INFO L82 PathProgramCache]: Analyzing trace with hash 277570902, now seen corresponding path program 1 times [2019-10-07 13:59:58,946 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:58,946 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:58,946 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:58,946 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 13:59:59,135 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:59,135 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:59,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 3440 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 13:59:59,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-07 13:59:59,899 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:00:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 14:00:00,126 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:00:00,126 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2019-10-07 14:00:00,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:00:00,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:00:00,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-07 14:00:00,127 INFO L87 Difference]: Start difference. First operand 12019 states and 18413 transitions. Second operand 4 states. [2019-10-07 14:00:00,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:00:00,483 INFO L93 Difference]: Finished difference Result 24144 states and 37657 transitions. [2019-10-07 14:00:00,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:00:00,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 185 [2019-10-07 14:00:00,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:00:00,542 INFO L225 Difference]: With dead ends: 24144 [2019-10-07 14:00:00,542 INFO L226 Difference]: Without dead ends: 12235 [2019-10-07 14:00:00,582 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-07 14:00:00,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12235 states. [2019-10-07 14:00:01,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12235 to 12055. [2019-10-07 14:00:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12055 states. [2019-10-07 14:00:01,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12055 states to 12055 states and 18389 transitions. [2019-10-07 14:00:01,354 INFO L78 Accepts]: Start accepts. Automaton has 12055 states and 18389 transitions. Word has length 185 [2019-10-07 14:00:01,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:00:01,355 INFO L462 AbstractCegarLoop]: Abstraction has 12055 states and 18389 transitions. [2019-10-07 14:00:01,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:00:01,355 INFO L276 IsEmpty]: Start isEmpty. Operand 12055 states and 18389 transitions. [2019-10-07 14:00:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-07 14:00:01,366 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:00:01,367 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:00:01,576 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:01,576 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:00:01,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:00:01,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1752091284, now seen corresponding path program 1 times [2019-10-07 14:00:01,577 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:00:01,577 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:00:01,577 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:00:01,577 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:00:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:00:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:00:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 14:00:01,779 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:00:01,779 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:00:01,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:00:02,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 3441 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 14:00:02,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:00:02,520 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-07 14:00:02,520 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:00:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 14:00:02,769 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:00:02,769 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 11 [2019-10-07 14:00:02,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:00:02,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:00:02,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:00:02,770 INFO L87 Difference]: Start difference. First operand 12055 states and 18389 transitions. Second operand 5 states. [2019-10-07 14:00:04,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:00:04,750 INFO L93 Difference]: Finished difference Result 28044 states and 44944 transitions. [2019-10-07 14:00:04,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:00:04,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2019-10-07 14:00:04,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:00:04,811 INFO L225 Difference]: With dead ends: 28044 [2019-10-07 14:00:04,812 INFO L226 Difference]: Without dead ends: 19526 [2019-10-07 14:00:04,837 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 368 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:00:04,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19526 states. [2019-10-07 14:00:05,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19526 to 18863. [2019-10-07 14:00:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18863 states. [2019-10-07 14:00:05,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18863 states to 18863 states and 29492 transitions. [2019-10-07 14:00:05,703 INFO L78 Accepts]: Start accepts. Automaton has 18863 states and 29492 transitions. Word has length 185 [2019-10-07 14:00:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:00:05,703 INFO L462 AbstractCegarLoop]: Abstraction has 18863 states and 29492 transitions. [2019-10-07 14:00:05,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:00:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 18863 states and 29492 transitions. [2019-10-07 14:00:05,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-07 14:00:05,712 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:00:05,712 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:00:05,920 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:05,921 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:00:05,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:00:05,922 INFO L82 PathProgramCache]: Analyzing trace with hash 58560768, now seen corresponding path program 1 times [2019-10-07 14:00:05,922 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:00:05,923 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:00:05,923 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:00:05,923 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:00:05,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:00:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:00:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-07 14:00:06,086 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:00:06,086 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:00:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:00:06,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 3441 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 14:00:06,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:00:06,873 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 14:00:06,873 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:00:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 14:00:07,111 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:00:07,112 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 7 [2019-10-07 14:00:07,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:00:07,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:00:07,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:00:07,119 INFO L87 Difference]: Start difference. First operand 18863 states and 29492 transitions. Second operand 4 states. [2019-10-07 14:00:08,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:00:08,028 INFO L93 Difference]: Finished difference Result 38216 states and 61922 transitions. [2019-10-07 14:00:08,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:00:08,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 188 [2019-10-07 14:00:08,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:00:08,099 INFO L225 Difference]: With dead ends: 38216 [2019-10-07 14:00:08,099 INFO L226 Difference]: Without dead ends: 19463 [2019-10-07 14:00:08,144 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 372 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:00:08,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19463 states. [2019-10-07 14:00:08,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19463 to 19145. [2019-10-07 14:00:08,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19145 states. [2019-10-07 14:00:08,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19145 states to 19145 states and 29918 transitions. [2019-10-07 14:00:08,906 INFO L78 Accepts]: Start accepts. Automaton has 19145 states and 29918 transitions. Word has length 188 [2019-10-07 14:00:08,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:00:08,906 INFO L462 AbstractCegarLoop]: Abstraction has 19145 states and 29918 transitions. [2019-10-07 14:00:08,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:00:08,907 INFO L276 IsEmpty]: Start isEmpty. Operand 19145 states and 29918 transitions. [2019-10-07 14:00:08,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-07 14:00:08,913 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:00:08,913 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:09,114 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:09,115 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:00:09,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:00:09,116 INFO L82 PathProgramCache]: Analyzing trace with hash -911491543, now seen corresponding path program 1 times [2019-10-07 14:00:09,116 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:00:09,116 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:00:09,117 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:00:09,117 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:00:09,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:00:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:00:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-07 14:00:09,280 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:00:09,280 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:00:09,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:00:10,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 3453 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 14:00:10,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:00:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-07 14:00:10,121 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:00:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 14:00:10,376 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:00:10,377 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-10-07 14:00:10,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:00:10,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:00:10,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:00:10,378 INFO L87 Difference]: Start difference. First operand 19145 states and 29918 transitions. Second operand 5 states. [2019-10-07 14:00:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:00:12,572 INFO L93 Difference]: Finished difference Result 42789 states and 70166 transitions. [2019-10-07 14:00:12,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:00:12,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2019-10-07 14:00:12,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:00:12,707 INFO L225 Difference]: With dead ends: 42789 [2019-10-07 14:00:12,707 INFO L226 Difference]: Without dead ends: 27514 [2019-10-07 14:00:12,758 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 386 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:00:12,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27514 states. [2019-10-07 14:00:13,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27514 to 27210. [2019-10-07 14:00:13,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27210 states. [2019-10-07 14:00:15,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27210 states to 27210 states and 44016 transitions. [2019-10-07 14:00:15,630 INFO L78 Accepts]: Start accepts. Automaton has 27210 states and 44016 transitions. Word has length 194 [2019-10-07 14:00:15,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:00:15,631 INFO L462 AbstractCegarLoop]: Abstraction has 27210 states and 44016 transitions. [2019-10-07 14:00:15,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:00:15,631 INFO L276 IsEmpty]: Start isEmpty. Operand 27210 states and 44016 transitions. [2019-10-07 14:00:15,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-07 14:00:15,638 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:00:15,638 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:15,839 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:15,839 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:00:15,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:00:15,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1129270314, now seen corresponding path program 1 times [2019-10-07 14:00:15,841 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:00:15,841 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:00:15,841 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:00:15,842 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:00:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:00:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:00:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-07 14:00:16,022 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:00:16,022 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:00:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:00:16,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 3454 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 14:00:16,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:00:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-07 14:00:16,882 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:00:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 14:00:17,144 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:00:17,144 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 11 [2019-10-07 14:00:17,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:00:17,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:00:17,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:00:17,146 INFO L87 Difference]: Start difference. First operand 27210 states and 44016 transitions. Second operand 5 states. [2019-10-07 14:00:19,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:00:19,411 INFO L93 Difference]: Finished difference Result 58968 states and 99469 transitions. [2019-10-07 14:00:19,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:00:19,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2019-10-07 14:00:19,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:00:19,570 INFO L225 Difference]: With dead ends: 58968 [2019-10-07 14:00:19,570 INFO L226 Difference]: Without dead ends: 35639 [2019-10-07 14:00:19,649 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 388 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:00:19,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35639 states. [2019-10-07 14:00:21,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35639 to 35155. [2019-10-07 14:00:21,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35155 states. [2019-10-07 14:00:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35155 states to 35155 states and 58772 transitions. [2019-10-07 14:00:21,238 INFO L78 Accepts]: Start accepts. Automaton has 35155 states and 58772 transitions. Word has length 195 [2019-10-07 14:00:21,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:00:21,239 INFO L462 AbstractCegarLoop]: Abstraction has 35155 states and 58772 transitions. [2019-10-07 14:00:21,239 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:00:21,239 INFO L276 IsEmpty]: Start isEmpty. Operand 35155 states and 58772 transitions. [2019-10-07 14:00:21,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-07 14:00:21,246 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:00:21,247 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:21,455 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:21,456 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:00:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:00:21,456 INFO L82 PathProgramCache]: Analyzing trace with hash -818589485, now seen corresponding path program 1 times [2019-10-07 14:00:21,457 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:00:21,457 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:00:21,457 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:00:21,457 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:00:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:00:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:00:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 14:00:21,618 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:00:21,618 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:00:21,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:00:22,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 3455 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:00:22,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:00:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-07 14:00:22,398 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:00:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 14:00:22,591 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:00:22,591 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-07 14:00:22,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:00:22,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:00:22,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:00:22,592 INFO L87 Difference]: Start difference. First operand 35155 states and 58772 transitions. Second operand 3 states. [2019-10-07 14:00:25,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:00:25,163 INFO L93 Difference]: Finished difference Result 101262 states and 191821 transitions. [2019-10-07 14:00:25,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:00:25,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-10-07 14:00:25,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:00:25,558 INFO L225 Difference]: With dead ends: 101262 [2019-10-07 14:00:25,559 INFO L226 Difference]: Without dead ends: 66221 [2019-10-07 14:00:25,707 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:00:25,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66221 states. [2019-10-07 14:00:30,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66221 to 54932. [2019-10-07 14:00:30,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54932 states. [2019-10-07 14:00:30,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54932 states to 54932 states and 101081 transitions. [2019-10-07 14:00:30,812 INFO L78 Accepts]: Start accepts. Automaton has 54932 states and 101081 transitions. Word has length 196 [2019-10-07 14:00:30,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:00:30,812 INFO L462 AbstractCegarLoop]: Abstraction has 54932 states and 101081 transitions. [2019-10-07 14:00:30,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:00:30,813 INFO L276 IsEmpty]: Start isEmpty. Operand 54932 states and 101081 transitions. [2019-10-07 14:00:30,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-10-07 14:00:30,820 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:00:30,820 INFO L385 BasicCegarLoop]: trace histogram [5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:31,021 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:31,021 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:00:31,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:00:31,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1558915349, now seen corresponding path program 1 times [2019-10-07 14:00:31,023 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:00:31,023 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:00:31,023 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:00:31,024 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:00:31,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:00:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:00:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-07 14:00:31,173 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:00:31,173 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:00:31,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:00:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:00:32,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 3453 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 14:00:32,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:00:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 14:00:32,480 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:00:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 14:00:32,679 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:00:32,712 INFO L162 IcfgInterpreter]: Started Sifa with 157 locations of interest [2019-10-07 14:00:32,712 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:00:32,719 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:00:32,727 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:00:32,727 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:01:30,137 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 783 [2019-10-07 14:01:35,263 WARN L191 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 430 DAG size of output: 347 [2019-10-07 14:01:35,672 WARN L191 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 876 [2019-10-07 14:01:35,942 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 876 [2019-10-07 14:01:36,201 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 876 [2019-10-07 14:01:38,563 WARN L191 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:01:39,089 WARN L191 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:01:39,608 WARN L191 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:01:40,189 WARN L191 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:01:41,199 WARN L191 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 1078 DAG size of output: 1076 [2019-10-07 14:01:41,709 WARN L191 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:01:42,276 WARN L191 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:01:42,776 WARN L191 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:01:43,277 WARN L191 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:01:43,839 WARN L191 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:01:43,860 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 409 for LOIs [2019-10-07 14:01:44,073 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 751 [2019-10-07 14:01:44,202 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 751 [2019-10-07 14:01:44,598 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 951 [2019-10-07 14:01:44,600 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1124 for LOIs [2019-10-07 14:01:45,086 WARN L191 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 1124 [2019-10-07 14:01:45,570 WARN L191 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 1124 [2019-10-07 14:01:45,724 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:01:46,570 WARN L191 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:01:47,069 WARN L191 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 1124 [2019-10-07 14:01:47,568 WARN L191 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 1124 [2019-10-07 14:01:47,875 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:01:48,767 WARN L191 SmtUtils]: Spent 890.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:01:49,296 WARN L191 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:01:49,784 WARN L191 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:01:49,971 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:01:50,826 WARN L191 SmtUtils]: Spent 853.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:01:52,860 WARN L191 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 1314 DAG size of output: 1126 [2019-10-07 14:01:53,360 WARN L191 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:01:53,509 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:01:54,369 WARN L191 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:01:54,878 WARN L191 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:01:55,378 WARN L191 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:01:55,518 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:01:56,369 WARN L191 SmtUtils]: Spent 849.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:01:56,859 WARN L191 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:01:57,357 WARN L191 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:01:57,498 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:01:58,348 WARN L191 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:01:58,838 WARN L191 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:01:59,331 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:01:59,469 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:02:00,334 WARN L191 SmtUtils]: Spent 863.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:02:00,825 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:02:01,318 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:02:01,457 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:02:02,307 WARN L191 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:02:02,804 WARN L191 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:02:03,305 WARN L191 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:02:03,445 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:02:04,311 WARN L191 SmtUtils]: Spent 863.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:02:04,805 WARN L191 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:02:05,304 WARN L191 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:02:05,449 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:02:06,311 WARN L191 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:02:06,803 WARN L191 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:02:07,294 WARN L191 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:02:07,432 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:02:08,279 WARN L191 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:02:08,770 WARN L191 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:02:09,274 WARN L191 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:02:09,414 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:02:10,273 WARN L191 SmtUtils]: Spent 857.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:02:10,786 WARN L191 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:02:11,286 WARN L191 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 1126 [2019-10-07 14:02:11,427 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:02:12,296 WARN L191 SmtUtils]: Spent 867.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:02:12,589 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:02:12,590 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: CallReturnSummary for callee select_one 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: CallReturnSummary for callee select_one at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java: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 14:02:12,601 INFO L168 Benchmark]: Toolchain (without parser) took 182812.32 ms. Allocated memory was 144.7 MB in the beginning and 3.2 GB in the end (delta: 3.1 GB). Free memory was 98.5 MB in the beginning and 2.5 GB in the end (delta: -2.4 GB). Peak memory consumption was 627.6 MB. Max. memory is 7.1 GB. [2019-10-07 14:02:12,602 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 14:02:12,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1104.24 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 98.2 MB in the beginning and 132.7 MB in the end (delta: -34.4 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2019-10-07 14:02:12,605 INFO L168 Benchmark]: Boogie Preprocessor took 233.16 ms. Allocated memory is still 202.9 MB. Free memory was 132.7 MB in the beginning and 122.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-07 14:02:12,609 INFO L168 Benchmark]: RCFGBuilder took 5313.15 ms. Allocated memory was 202.9 MB in the beginning and 301.5 MB in the end (delta: 98.6 MB). Free memory was 122.8 MB in the beginning and 188.7 MB in the end (delta: -66.0 MB). Peak memory consumption was 145.6 MB. Max. memory is 7.1 GB. [2019-10-07 14:02:12,610 INFO L168 Benchmark]: TraceAbstraction took 176157.35 ms. Allocated memory was 301.5 MB in the beginning and 3.2 GB in the end (delta: 2.9 GB). Free memory was 188.7 MB in the beginning and 2.5 GB in the end (delta: -2.4 GB). Peak memory consumption was 561.1 MB. Max. memory is 7.1 GB. [2019-10-07 14:02:12,620 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 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1104.24 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 98.2 MB in the beginning and 132.7 MB in the end (delta: -34.4 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 233.16 ms. Allocated memory is still 202.9 MB. Free memory was 132.7 MB in the beginning and 122.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5313.15 ms. Allocated memory was 202.9 MB in the beginning and 301.5 MB in the end (delta: 98.6 MB). Free memory was 122.8 MB in the beginning and 188.7 MB in the end (delta: -66.0 MB). Peak memory consumption was 145.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 176157.35 ms. Allocated memory was 301.5 MB in the beginning and 3.2 GB in the end (delta: 2.9 GB). Free memory was 188.7 MB in the beginning and 2.5 GB in the end (delta: -2.4 GB). Peak memory consumption was 561.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one: 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...