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_spec2_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:15:08,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:15:08,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:15:08,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:15:08,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:15:08,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:15:08,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:15:08,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:15:08,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:15:08,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:15:08,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:15:08,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:15:08,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:15:08,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:15:08,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:15:08,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:15:08,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:15:08,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:15:08,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:15:08,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:15:08,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:15:08,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:15:08,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:15:08,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:15:08,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:15:08,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:15:08,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:15:08,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:15:08,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:15:08,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:15:08,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:15:08,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:15:08,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:15:08,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:15:08,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:15:08,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:15:08,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:15:08,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:15:08,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:15:08,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:15:08,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:15:08,759 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 14:15:08,789 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:15:08,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:15:08,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:15:08,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:15:08,791 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:15:08,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:15:08,791 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:15:08,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:15:08,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:15:08,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:15:08,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:15:08,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:15:08,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:15:08,792 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:15:08,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:15:08,793 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:15:08,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:15:08,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:15:08,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:15:08,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:15:08,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:15:08,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:15:08,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:15:08,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:15:08,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:15:08,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:15:08,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:15:08,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:15:08,795 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 14:15:09,115 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:15:09,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:15:09,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:15:09,144 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:15:09,144 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:15:09,145 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product17.cil.c [2019-10-07 14:15:09,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35655b642/4462a6bff3d647a68f9ab1cd3139548b/FLAG394dafbc3 [2019-10-07 14:15:09,872 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:15:09,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product17.cil.c [2019-10-07 14:15:09,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35655b642/4462a6bff3d647a68f9ab1cd3139548b/FLAG394dafbc3 [2019-10-07 14:15:10,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35655b642/4462a6bff3d647a68f9ab1cd3139548b [2019-10-07 14:15:10,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:15:10,079 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:15:10,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:15:10,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:15:10,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:15:10,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:15:10" (1/1) ... [2019-10-07 14:15:10,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b9758f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:15:10, skipping insertion in model container [2019-10-07 14:15:10,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:15:10" (1/1) ... [2019-10-07 14:15:10,100 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:15:10,172 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:15:10,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:15:10,806 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:15:10,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:15:11,057 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:15:11,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:15:11 WrapperNode [2019-10-07 14:15:11,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:15:11,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:15:11,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:15:11,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:15:11,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:15:11" (1/1) ... [2019-10-07 14:15:11,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:15:11" (1/1) ... [2019-10-07 14:15:11,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:15:11" (1/1) ... [2019-10-07 14:15:11,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:15:11" (1/1) ... [2019-10-07 14:15:11,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:15:11" (1/1) ... [2019-10-07 14:15:11,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:15:11" (1/1) ... [2019-10-07 14:15:11,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:15:11" (1/1) ... [2019-10-07 14:15:11,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:15:11,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:15:11,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:15:11,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:15:11,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:15:11" (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 14:15:11,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:15:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:15:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:15:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:15:11,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:15:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:15:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:15:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:15:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:15:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:15:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:15:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:15:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:15:11,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:15:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:15:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:15:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:15:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:15:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:15:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:15:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:15:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:15:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:15:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:15:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:15:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:15:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:15:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:15:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:15:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:15:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:15:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:15:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:15:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:15:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:15:11,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:15:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:15:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:15:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:15:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:15:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:15:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:15:11,314 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:15:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:15:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:15:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:15:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:15:11,315 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:15:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:15:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:15:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:15:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:15:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:15:11,316 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:15:11,317 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:15:11,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:15:11,317 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:15:11,317 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:15:11,317 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:15:11,318 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:15:11,318 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:15:11,318 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:15:11,318 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:15:11,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:15:11,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:15:11,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:15:11,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:15:11,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:15:11,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:15:11,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:15:11,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:15:11,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:15:11,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:15:11,320 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:15:11,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:15:11,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:15:11,321 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:15:11,321 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:15:11,321 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:15:11,321 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:15:11,322 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:15:11,322 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:15:11,322 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:15:11,322 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:15:11,322 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:15:11,323 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:15:11,323 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:15:11,323 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:15:11,323 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:15:11,323 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:15:11,323 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:15:11,324 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:15:11,324 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:15:11,324 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:15:11,324 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:15:11,324 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:15:11,325 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:15:11,325 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:15:11,325 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:15:11,325 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:15:11,325 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:15:11,325 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:15:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:15:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:15:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:15:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:15:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:15:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:15:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:15:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:15:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:15:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:15:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:15:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:15:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:15:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:15:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:15:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:15:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:15:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:15:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:15:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:15:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:15:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:15:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:15:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:15:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:15:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:15:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:15:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:15:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:15:11,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:15:11,334 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:15:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:15:11,339 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:15:11,339 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:15:11,339 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:15:11,339 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:15:11,339 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:15:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:15:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:15:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:15:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:15:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:15:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:15:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:15:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:15:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:15:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:15:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:15:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:15:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:15:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:15:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:15:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:15:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:15:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:15:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:15:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:15:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:15:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:15:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:15:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:15:15,951 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:15:15,952 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:15:15,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:15:15 BoogieIcfgContainer [2019-10-07 14:15:15,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:15:15,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:15:15,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:15:15,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:15:15,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:15:10" (1/3) ... [2019-10-07 14:15:15,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca35a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:15:15, skipping insertion in model container [2019-10-07 14:15:15,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:15:11" (2/3) ... [2019-10-07 14:15:15,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca35a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:15:15, skipping insertion in model container [2019-10-07 14:15:15,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:15:15" (3/3) ... [2019-10-07 14:15:15,967 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product17.cil.c [2019-10-07 14:15:15,977 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:15:15,989 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:15:16,000 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:15:16,053 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:15:16,054 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:15:16,054 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:15:16,054 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:15:16,054 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:15:16,054 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:15:16,055 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:15:16,055 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:15:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states. [2019-10-07 14:15:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-07 14:15:16,122 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:15:16,123 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:15:16,126 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:15:16,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:15:16,132 INFO L82 PathProgramCache]: Analyzing trace with hash 419507359, now seen corresponding path program 1 times [2019-10-07 14:15:16,142 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:15:16,142 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:16,142 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:16,143 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:16,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:15:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:15:16,857 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:16,858 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:15:16,858 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 14:15:16,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 14:15:16,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 14:15:16,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 14:15:16,876 INFO L87 Difference]: Start difference. First operand 542 states. Second operand 2 states. [2019-10-07 14:15:16,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:15:16,944 INFO L93 Difference]: Finished difference Result 445 states and 668 transitions. [2019-10-07 14:15:16,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 14:15:16,945 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 92 [2019-10-07 14:15:16,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:15:16,968 INFO L225 Difference]: With dead ends: 445 [2019-10-07 14:15:16,968 INFO L226 Difference]: Without dead ends: 411 [2019-10-07 14:15:16,973 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 14:15:16,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2019-10-07 14:15:17,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2019-10-07 14:15:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2019-10-07 14:15:17,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 617 transitions. [2019-10-07 14:15:17,064 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 617 transitions. Word has length 92 [2019-10-07 14:15:17,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:15:17,066 INFO L462 AbstractCegarLoop]: Abstraction has 411 states and 617 transitions. [2019-10-07 14:15:17,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 14:15:17,066 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 617 transitions. [2019-10-07 14:15:17,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-07 14:15:17,073 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:15:17,074 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:15:17,074 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:15:17,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:15:17,074 INFO L82 PathProgramCache]: Analyzing trace with hash 2016967492, now seen corresponding path program 1 times [2019-10-07 14:15:17,075 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:15:17,075 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:17,075 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:17,075 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:17,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:15:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:15:17,354 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:17,354 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:15:17,354 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:15:17,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:15:17,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:15:17,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:15:17,360 INFO L87 Difference]: Start difference. First operand 411 states and 617 transitions. Second operand 8 states. [2019-10-07 14:15:17,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:15:17,543 INFO L93 Difference]: Finished difference Result 819 states and 1261 transitions. [2019-10-07 14:15:17,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 14:15:17,551 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-10-07 14:15:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:15:17,559 INFO L225 Difference]: With dead ends: 819 [2019-10-07 14:15:17,559 INFO L226 Difference]: Without dead ends: 450 [2019-10-07 14:15:17,569 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 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 14:15:17,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2019-10-07 14:15:17,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 415. [2019-10-07 14:15:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2019-10-07 14:15:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 621 transitions. [2019-10-07 14:15:17,642 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 621 transitions. Word has length 93 [2019-10-07 14:15:17,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:15:17,645 INFO L462 AbstractCegarLoop]: Abstraction has 415 states and 621 transitions. [2019-10-07 14:15:17,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:15:17,645 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 621 transitions. [2019-10-07 14:15:17,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-07 14:15:17,655 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:15:17,655 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:15:17,656 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:15:17,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:15:17,656 INFO L82 PathProgramCache]: Analyzing trace with hash 514841222, now seen corresponding path program 1 times [2019-10-07 14:15:17,656 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:15:17,656 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:17,657 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:17,657 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:17,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:15:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:15:17,943 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:17,943 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:15:17,943 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:15:17,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:15:17,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:15:17,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:15:17,945 INFO L87 Difference]: Start difference. First operand 415 states and 621 transitions. Second operand 7 states. [2019-10-07 14:15:21,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:15:21,684 INFO L93 Difference]: Finished difference Result 1276 states and 1972 transitions. [2019-10-07 14:15:21,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-07 14:15:21,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-10-07 14:15:21,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:15:21,692 INFO L225 Difference]: With dead ends: 1276 [2019-10-07 14:15:21,692 INFO L226 Difference]: Without dead ends: 903 [2019-10-07 14:15:21,695 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:15:21,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2019-10-07 14:15:21,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 876. [2019-10-07 14:15:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2019-10-07 14:15:21,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1357 transitions. [2019-10-07 14:15:21,817 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1357 transitions. Word has length 97 [2019-10-07 14:15:21,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:15:21,817 INFO L462 AbstractCegarLoop]: Abstraction has 876 states and 1357 transitions. [2019-10-07 14:15:21,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:15:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1357 transitions. [2019-10-07 14:15:21,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-07 14:15:21,821 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:15:21,821 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:15:21,821 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:15:21,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:15:21,822 INFO L82 PathProgramCache]: Analyzing trace with hash -210555956, now seen corresponding path program 1 times [2019-10-07 14:15:21,822 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:15:21,822 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:21,822 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:21,823 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:21,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:15:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:15:21,970 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:21,970 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:15:21,970 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:15:21,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:15:21,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:15:21,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:15:21,972 INFO L87 Difference]: Start difference. First operand 876 states and 1357 transitions. Second operand 5 states. [2019-10-07 14:15:22,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:15:22,043 INFO L93 Difference]: Finished difference Result 1386 states and 2160 transitions. [2019-10-07 14:15:22,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:15:22,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2019-10-07 14:15:22,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:15:22,051 INFO L225 Difference]: With dead ends: 1386 [2019-10-07 14:15:22,052 INFO L226 Difference]: Without dead ends: 898 [2019-10-07 14:15:22,056 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:15:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2019-10-07 14:15:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 888. [2019-10-07 14:15:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2019-10-07 14:15:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1372 transitions. [2019-10-07 14:15:22,136 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1372 transitions. Word has length 101 [2019-10-07 14:15:22,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:15:22,139 INFO L462 AbstractCegarLoop]: Abstraction has 888 states and 1372 transitions. [2019-10-07 14:15:22,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:15:22,139 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1372 transitions. [2019-10-07 14:15:22,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-07 14:15:22,149 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:15:22,150 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:15:22,150 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:15:22,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:15:22,151 INFO L82 PathProgramCache]: Analyzing trace with hash -184459996, now seen corresponding path program 1 times [2019-10-07 14:15:22,151 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:15:22,151 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:22,151 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:22,152 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:15:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:15:22,458 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:22,458 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:15:22,459 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:15:22,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:15:22,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:15:22,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:15:22,460 INFO L87 Difference]: Start difference. First operand 888 states and 1372 transitions. Second operand 8 states. [2019-10-07 14:15:26,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:15:26,020 INFO L93 Difference]: Finished difference Result 1881 states and 2911 transitions. [2019-10-07 14:15:26,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 14:15:26,021 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2019-10-07 14:15:26,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:15:26,033 INFO L225 Difference]: With dead ends: 1881 [2019-10-07 14:15:26,034 INFO L226 Difference]: Without dead ends: 1285 [2019-10-07 14:15:26,038 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:15:26,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2019-10-07 14:15:26,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1235. [2019-10-07 14:15:26,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2019-10-07 14:15:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1866 transitions. [2019-10-07 14:15:26,122 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1866 transitions. Word has length 105 [2019-10-07 14:15:26,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:15:26,123 INFO L462 AbstractCegarLoop]: Abstraction has 1235 states and 1866 transitions. [2019-10-07 14:15:26,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:15:26,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1866 transitions. [2019-10-07 14:15:26,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-07 14:15:26,127 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:15:26,128 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:26,128 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:15:26,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:15:26,128 INFO L82 PathProgramCache]: Analyzing trace with hash -77137945, now seen corresponding path program 1 times [2019-10-07 14:15:26,129 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:15:26,129 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:26,129 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:26,129 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:26,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:15:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:15:26,302 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:26,302 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:15:26,302 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:15:26,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:15:26,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:15:26,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:15:26,308 INFO L87 Difference]: Start difference. First operand 1235 states and 1866 transitions. Second operand 7 states. [2019-10-07 14:15:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:15:26,521 INFO L93 Difference]: Finished difference Result 2322 states and 3593 transitions. [2019-10-07 14:15:26,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:15:26,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2019-10-07 14:15:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:15:26,535 INFO L225 Difference]: With dead ends: 2322 [2019-10-07 14:15:26,535 INFO L226 Difference]: Without dead ends: 1235 [2019-10-07 14:15:26,543 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:15:26,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2019-10-07 14:15:26,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1235. [2019-10-07 14:15:26,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2019-10-07 14:15:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1834 transitions. [2019-10-07 14:15:26,622 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1834 transitions. Word has length 108 [2019-10-07 14:15:26,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:15:26,622 INFO L462 AbstractCegarLoop]: Abstraction has 1235 states and 1834 transitions. [2019-10-07 14:15:26,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:15:26,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1834 transitions. [2019-10-07 14:15:26,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-07 14:15:26,627 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:15:26,627 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:15:26,627 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:15:26,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:15:26,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1803980195, now seen corresponding path program 1 times [2019-10-07 14:15:26,628 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:15:26,628 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:26,629 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:26,629 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:15:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:15:26,913 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:26,913 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:15:26,913 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:15:26,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:15:26,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:15:26,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:15:26,915 INFO L87 Difference]: Start difference. First operand 1235 states and 1834 transitions. Second operand 7 states. [2019-10-07 14:15:30,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:15:30,292 INFO L93 Difference]: Finished difference Result 2191 states and 3263 transitions. [2019-10-07 14:15:30,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 14:15:30,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-10-07 14:15:30,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:15:30,304 INFO L225 Difference]: With dead ends: 2191 [2019-10-07 14:15:30,304 INFO L226 Difference]: Without dead ends: 1305 [2019-10-07 14:15:30,311 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 14:15:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2019-10-07 14:15:30,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1262. [2019-10-07 14:15:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1262 states. [2019-10-07 14:15:30,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1868 transitions. [2019-10-07 14:15:30,410 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1868 transitions. Word has length 110 [2019-10-07 14:15:30,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:15:30,410 INFO L462 AbstractCegarLoop]: Abstraction has 1262 states and 1868 transitions. [2019-10-07 14:15:30,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:15:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1868 transitions. [2019-10-07 14:15:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-07 14:15:30,414 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:15:30,414 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:15:30,414 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:15:30,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:15:30,415 INFO L82 PathProgramCache]: Analyzing trace with hash 699040819, now seen corresponding path program 1 times [2019-10-07 14:15:30,415 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:15:30,415 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:30,415 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:30,415 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:30,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:15:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:30,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:15:30,564 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:30,565 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:15:30,565 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:15:30,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:15:30,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:15:30,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:15:30,566 INFO L87 Difference]: Start difference. First operand 1262 states and 1868 transitions. Second operand 4 states. [2019-10-07 14:15:32,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:15:32,093 INFO L93 Difference]: Finished difference Result 3811 states and 5777 transitions. [2019-10-07 14:15:32,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:15:32,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-07 14:15:32,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:15:32,113 INFO L225 Difference]: With dead ends: 3811 [2019-10-07 14:15:32,114 INFO L226 Difference]: Without dead ends: 2591 [2019-10-07 14:15:32,121 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:15:32,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2019-10-07 14:15:32,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2446. [2019-10-07 14:15:32,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2446 states. [2019-10-07 14:15:32,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 3682 transitions. [2019-10-07 14:15:32,248 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 3682 transitions. Word has length 117 [2019-10-07 14:15:32,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:15:32,249 INFO L462 AbstractCegarLoop]: Abstraction has 2446 states and 3682 transitions. [2019-10-07 14:15:32,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:15:32,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 3682 transitions. [2019-10-07 14:15:32,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-07 14:15:32,252 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:15:32,252 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:15:32,252 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:15:32,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:15:32,253 INFO L82 PathProgramCache]: Analyzing trace with hash 194148701, now seen corresponding path program 1 times [2019-10-07 14:15:32,253 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:15:32,253 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:32,253 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:32,254 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:32,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:15:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:15:32,413 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:32,413 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:15:32,413 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:15:32,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:15:32,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:15:32,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:15:32,415 INFO L87 Difference]: Start difference. First operand 2446 states and 3682 transitions. Second operand 4 states. [2019-10-07 14:15:34,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:15:34,235 INFO L93 Difference]: Finished difference Result 7285 states and 11223 transitions. [2019-10-07 14:15:34,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:15:34,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-07 14:15:34,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:15:34,275 INFO L225 Difference]: With dead ends: 7285 [2019-10-07 14:15:34,276 INFO L226 Difference]: Without dead ends: 4882 [2019-10-07 14:15:34,290 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:15:34,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4882 states. [2019-10-07 14:15:34,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4882 to 4704. [2019-10-07 14:15:34,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4704 states. [2019-10-07 14:15:34,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4704 states to 4704 states and 7176 transitions. [2019-10-07 14:15:34,581 INFO L78 Accepts]: Start accepts. Automaton has 4704 states and 7176 transitions. Word has length 118 [2019-10-07 14:15:34,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:15:34,582 INFO L462 AbstractCegarLoop]: Abstraction has 4704 states and 7176 transitions. [2019-10-07 14:15:34,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:15:34,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4704 states and 7176 transitions. [2019-10-07 14:15:34,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:15:34,585 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:15:34,585 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:15:34,585 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:15:34,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:15:34,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1722366133, now seen corresponding path program 1 times [2019-10-07 14:15:34,587 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:15:34,587 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:34,587 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:34,587 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:15:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:34,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:15:34,740 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:34,740 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:15:34,740 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:15:34,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:15:34,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:15:34,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:15:34,741 INFO L87 Difference]: Start difference. First operand 4704 states and 7176 transitions. Second operand 4 states. [2019-10-07 14:15:37,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:15:37,132 INFO L93 Difference]: Finished difference Result 14141 states and 22307 transitions. [2019-10-07 14:15:37,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:15:37,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-07 14:15:37,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:15:37,227 INFO L225 Difference]: With dead ends: 14141 [2019-10-07 14:15:37,227 INFO L226 Difference]: Without dead ends: 9482 [2019-10-07 14:15:37,264 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:15:37,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9482 states. [2019-10-07 14:15:38,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9482 to 9239. [2019-10-07 14:15:38,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9239 states. [2019-10-07 14:15:38,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9239 states to 9239 states and 14382 transitions. [2019-10-07 14:15:38,080 INFO L78 Accepts]: Start accepts. Automaton has 9239 states and 14382 transitions. Word has length 119 [2019-10-07 14:15:38,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:15:38,081 INFO L462 AbstractCegarLoop]: Abstraction has 9239 states and 14382 transitions. [2019-10-07 14:15:38,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:15:38,082 INFO L276 IsEmpty]: Start isEmpty. Operand 9239 states and 14382 transitions. [2019-10-07 14:15:38,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-07 14:15:38,086 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:15:38,087 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:15:38,087 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:15:38,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:15:38,088 INFO L82 PathProgramCache]: Analyzing trace with hash 233269204, now seen corresponding path program 1 times [2019-10-07 14:15:38,088 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:15:38,088 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:38,088 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:38,089 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:15:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:15:38,532 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:38,532 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:15:38,532 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:15:38,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:15:38,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:15:38,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:15:38,534 INFO L87 Difference]: Start difference. First operand 9239 states and 14382 transitions. Second operand 4 states. [2019-10-07 14:15:40,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:15:40,535 INFO L93 Difference]: Finished difference Result 27908 states and 45804 transitions. [2019-10-07 14:15:40,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:15:40,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-07 14:15:40,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:15:40,651 INFO L225 Difference]: With dead ends: 27908 [2019-10-07 14:15:40,651 INFO L226 Difference]: Without dead ends: 18718 [2019-10-07 14:15:40,699 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:15:40,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18718 states. [2019-10-07 14:15:41,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18718 to 18346. [2019-10-07 14:15:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18346 states. [2019-10-07 14:15:41,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18346 states to 18346 states and 29540 transitions. [2019-10-07 14:15:41,712 INFO L78 Accepts]: Start accepts. Automaton has 18346 states and 29540 transitions. Word has length 117 [2019-10-07 14:15:41,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:15:41,712 INFO L462 AbstractCegarLoop]: Abstraction has 18346 states and 29540 transitions. [2019-10-07 14:15:41,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:15:41,713 INFO L276 IsEmpty]: Start isEmpty. Operand 18346 states and 29540 transitions. [2019-10-07 14:15:41,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-07 14:15:41,716 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:15:41,716 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:15:41,716 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:15:41,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:15:41,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1590732087, now seen corresponding path program 1 times [2019-10-07 14:15:41,717 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:15:41,717 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:41,717 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:41,717 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:41,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:15:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:15:41,850 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:41,851 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:15:41,851 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:15:41,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:15:41,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:15:41,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:15:41,852 INFO L87 Difference]: Start difference. First operand 18346 states and 29540 transitions. Second operand 4 states. [2019-10-07 14:15:45,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:15:45,373 INFO L93 Difference]: Finished difference Result 55593 states and 97453 transitions. [2019-10-07 14:15:45,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:15:45,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-07 14:15:45,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:15:45,612 INFO L225 Difference]: With dead ends: 55593 [2019-10-07 14:15:45,612 INFO L226 Difference]: Without dead ends: 37292 [2019-10-07 14:15:45,674 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:15:45,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37292 states. [2019-10-07 14:15:47,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37292 to 36389. [2019-10-07 14:15:47,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36389 states. [2019-10-07 14:15:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36389 states to 36389 states and 61323 transitions. [2019-10-07 14:15:47,785 INFO L78 Accepts]: Start accepts. Automaton has 36389 states and 61323 transitions. Word has length 121 [2019-10-07 14:15:47,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:15:47,785 INFO L462 AbstractCegarLoop]: Abstraction has 36389 states and 61323 transitions. [2019-10-07 14:15:47,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:15:47,786 INFO L276 IsEmpty]: Start isEmpty. Operand 36389 states and 61323 transitions. [2019-10-07 14:15:47,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-07 14:15:47,793 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:15:47,794 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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 14:15:47,794 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:15:47,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:15:47,794 INFO L82 PathProgramCache]: Analyzing trace with hash 792643666, now seen corresponding path program 1 times [2019-10-07 14:15:47,795 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:15:47,795 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:47,795 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:47,795 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:47,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:15:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-07 14:15:47,952 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:47,952 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:15:47,953 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 14:15:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:49,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 3375 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:15:49,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:15:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 14:15:49,841 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:15:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-07 14:15:50,324 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:15:50,324 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-07 14:15:50,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:15:50,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:15:50,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:15:50,325 INFO L87 Difference]: Start difference. First operand 36389 states and 61323 transitions. Second operand 4 states. [2019-10-07 14:15:52,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:15:52,078 INFO L93 Difference]: Finished difference Result 76479 states and 134200 transitions. [2019-10-07 14:15:52,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:15:52,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-10-07 14:15:52,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:15:52,360 INFO L225 Difference]: With dead ends: 76479 [2019-10-07 14:15:52,361 INFO L226 Difference]: Without dead ends: 40133 [2019-10-07 14:15:52,678 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 343 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:15:52,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40133 states. [2019-10-07 14:15:55,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40133 to 40133. [2019-10-07 14:15:55,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40133 states. [2019-10-07 14:15:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40133 states to 40133 states and 68331 transitions. [2019-10-07 14:15:56,019 INFO L78 Accepts]: Start accepts. Automaton has 40133 states and 68331 transitions. Word has length 172 [2019-10-07 14:15:56,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:15:56,019 INFO L462 AbstractCegarLoop]: Abstraction has 40133 states and 68331 transitions. [2019-10-07 14:15:56,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:15:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand 40133 states and 68331 transitions. [2019-10-07 14:15:56,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-07 14:15:56,028 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:15:56,028 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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] [2019-10-07 14:15:56,236 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:15:56,237 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:15:56,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:15:56,237 INFO L82 PathProgramCache]: Analyzing trace with hash -943996804, now seen corresponding path program 1 times [2019-10-07 14:15:56,237 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:15:56,238 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:56,238 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:56,238 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:15:56,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:15:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:15:56,648 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:15:56,648 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:15:56,648 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 14:15:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:15:57,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 3380 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:15:57,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:15:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-07 14:15:57,357 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:15:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-07 14:15:57,745 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:15:57,745 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19, 4] total 22 [2019-10-07 14:15:57,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:15:57,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:15:57,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:15:57,747 INFO L87 Difference]: Start difference. First operand 40133 states and 68331 transitions. Second operand 4 states. [2019-10-07 14:16:00,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:16:00,508 INFO L93 Difference]: Finished difference Result 83967 states and 148117 transitions. [2019-10-07 14:16:00,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:16:00,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-07 14:16:00,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:16:00,732 INFO L225 Difference]: With dead ends: 83967 [2019-10-07 14:16:00,732 INFO L226 Difference]: Without dead ends: 43877 [2019-10-07 14:16:00,829 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 361 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:16:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43877 states. [2019-10-07 14:16:02,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43877 to 43877. [2019-10-07 14:16:02,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43877 states. [2019-10-07 14:16:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43877 states to 43877 states and 75339 transitions. [2019-10-07 14:16:02,719 INFO L78 Accepts]: Start accepts. Automaton has 43877 states and 75339 transitions. Word has length 177 [2019-10-07 14:16:02,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:16:02,720 INFO L462 AbstractCegarLoop]: Abstraction has 43877 states and 75339 transitions. [2019-10-07 14:16:02,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:16:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 43877 states and 75339 transitions. [2019-10-07 14:16:02,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-07 14:16:02,733 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:16:02,733 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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 14:16:02,941 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:16:02,942 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:16:02,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:16:02,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1960218164, now seen corresponding path program 1 times [2019-10-07 14:16:02,943 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:16:02,943 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:16:02,943 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:16:02,944 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:16:02,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:16:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:16:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-07 14:16:03,297 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:16:03,297 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:16:03,297 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 14:16:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:16:03,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 3384 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:16:03,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:16:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 14:16:03,985 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:16:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-07 14:16:04,350 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:16:04,350 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19, 4] total 22 [2019-10-07 14:16:04,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:16:04,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:16:04,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:16:04,351 INFO L87 Difference]: Start difference. First operand 43877 states and 75339 transitions. Second operand 4 states. [2019-10-07 14:16:05,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:16:05,889 INFO L93 Difference]: Finished difference Result 91455 states and 162034 transitions. [2019-10-07 14:16:05,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:16:05,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2019-10-07 14:16:05,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:16:06,044 INFO L225 Difference]: With dead ends: 91455 [2019-10-07 14:16:06,044 INFO L226 Difference]: Without dead ends: 47621 [2019-10-07 14:16:06,111 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 369 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:16:06,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47621 states. [2019-10-07 14:16:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47621 to 47621. [2019-10-07 14:16:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47621 states. [2019-10-07 14:16:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47621 states to 47621 states and 82347 transitions. [2019-10-07 14:16:08,063 INFO L78 Accepts]: Start accepts. Automaton has 47621 states and 82347 transitions. Word has length 181 [2019-10-07 14:16:08,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:16:08,064 INFO L462 AbstractCegarLoop]: Abstraction has 47621 states and 82347 transitions. [2019-10-07 14:16:08,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:16:08,064 INFO L276 IsEmpty]: Start isEmpty. Operand 47621 states and 82347 transitions. [2019-10-07 14:16:08,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-07 14:16:08,072 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:16:08,072 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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 14:16:08,280 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:16:08,288 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:16:08,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:16:08,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1403864182, now seen corresponding path program 1 times [2019-10-07 14:16:08,289 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:16:08,289 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:16:08,289 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:16:08,289 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:16:08,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:16:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:16:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-10-07 14:16:08,747 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:16:08,748 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:16:08,748 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 14:16:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:16:09,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 3387 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:16:09,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:16:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 14:16:09,493 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:16:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-07 14:16:09,880 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:16:09,880 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19, 4] total 22 [2019-10-07 14:16:09,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:16:09,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:16:09,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:16:09,882 INFO L87 Difference]: Start difference. First operand 47621 states and 82347 transitions. Second operand 4 states. [2019-10-07 14:16:12,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:16:12,771 INFO L93 Difference]: Finished difference Result 98943 states and 175951 transitions. [2019-10-07 14:16:12,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:16:12,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 184 [2019-10-07 14:16:12,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:16:12,923 INFO L225 Difference]: With dead ends: 98943 [2019-10-07 14:16:12,923 INFO L226 Difference]: Without dead ends: 51365 [2019-10-07 14:16:12,987 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 375 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:16:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51365 states. [2019-10-07 14:16:14,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51365 to 51365. [2019-10-07 14:16:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51365 states. [2019-10-07 14:16:14,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51365 states to 51365 states and 89355 transitions. [2019-10-07 14:16:14,711 INFO L78 Accepts]: Start accepts. Automaton has 51365 states and 89355 transitions. Word has length 184 [2019-10-07 14:16:14,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:16:14,711 INFO L462 AbstractCegarLoop]: Abstraction has 51365 states and 89355 transitions. [2019-10-07 14:16:14,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:16:14,711 INFO L276 IsEmpty]: Start isEmpty. Operand 51365 states and 89355 transitions. [2019-10-07 14:16:14,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-07 14:16:14,717 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:16:14,717 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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 14:16:14,930 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:16:14,931 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:16:14,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:16:14,931 INFO L82 PathProgramCache]: Analyzing trace with hash -746159110, now seen corresponding path program 1 times [2019-10-07 14:16:14,932 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:16:14,932 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:16:14,932 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:16:14,932 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:16:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:16:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:16:15,360 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-07 14:16:15,360 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:16:15,361 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:16:15,361 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 14:16:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:16:16,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 3389 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:16:16,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:16:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-07 14:16:16,356 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:16:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-07 14:16:16,751 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:16:16,751 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [19] total 22 [2019-10-07 14:16:16,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:16:16,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:16:16,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:16:16,755 INFO L87 Difference]: Start difference. First operand 51365 states and 89355 transitions. Second operand 5 states. [2019-10-07 14:16:18,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:16:18,076 INFO L93 Difference]: Finished difference Result 106431 states and 189868 transitions. [2019-10-07 14:16:18,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:16:18,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2019-10-07 14:16:18,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:16:18,385 INFO L225 Difference]: With dead ends: 106431 [2019-10-07 14:16:18,385 INFO L226 Difference]: Without dead ends: 55109 [2019-10-07 14:16:18,523 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 379 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:16:18,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55109 states. [2019-10-07 14:16:22,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55109 to 55109. [2019-10-07 14:16:22,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55109 states. [2019-10-07 14:16:22,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55109 states to 55109 states and 96363 transitions. [2019-10-07 14:16:22,363 INFO L78 Accepts]: Start accepts. Automaton has 55109 states and 96363 transitions. Word has length 186 [2019-10-07 14:16:22,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:16:22,364 INFO L462 AbstractCegarLoop]: Abstraction has 55109 states and 96363 transitions. [2019-10-07 14:16:22,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:16:22,365 INFO L276 IsEmpty]: Start isEmpty. Operand 55109 states and 96363 transitions. [2019-10-07 14:16:22,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-07 14:16:22,372 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:16:22,373 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 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 14:16:22,580 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:16:22,581 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:16:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:16:22,582 INFO L82 PathProgramCache]: Analyzing trace with hash -16495317, now seen corresponding path program 1 times [2019-10-07 14:16:22,582 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:16:22,582 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:16:22,582 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:16:22,583 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:16:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:16:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:16:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-07 14:16:22,956 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:16:22,956 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:16:22,956 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 14:16:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:16:23,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 3386 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 14:16:23,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:16:23,789 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-10-07 14:16:23,790 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:16:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-10-07 14:16:24,333 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:16:24,333 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [19] total 26 [2019-10-07 14:16:24,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:16:24,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:16:24,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2019-10-07 14:16:24,335 INFO L87 Difference]: Start difference. First operand 55109 states and 96363 transitions. Second operand 9 states. [2019-10-07 14:16:26,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:16:26,805 INFO L93 Difference]: Finished difference Result 56557 states and 103401 transitions. [2019-10-07 14:16:26,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:16:26,805 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 186 [2019-10-07 14:16:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:16:27,058 INFO L225 Difference]: With dead ends: 56557 [2019-10-07 14:16:27,058 INFO L226 Difference]: Without dead ends: 56338 [2019-10-07 14:16:27,085 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 373 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2019-10-07 14:16:27,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56338 states. [2019-10-07 14:16:28,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56338 to 55592. [2019-10-07 14:16:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55592 states. [2019-10-07 14:16:31,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55592 states to 55592 states and 98681 transitions. [2019-10-07 14:16:31,163 INFO L78 Accepts]: Start accepts. Automaton has 55592 states and 98681 transitions. Word has length 186 [2019-10-07 14:16:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:16:31,164 INFO L462 AbstractCegarLoop]: Abstraction has 55592 states and 98681 transitions. [2019-10-07 14:16:31,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:16:31,164 INFO L276 IsEmpty]: Start isEmpty. Operand 55592 states and 98681 transitions. [2019-10-07 14:16:31,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-07 14:16:31,169 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:16:31,169 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 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, 1, 1, 1, 1] [2019-10-07 14:16:31,369 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:16:31,370 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:16:31,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:16:31,371 INFO L82 PathProgramCache]: Analyzing trace with hash 125781494, now seen corresponding path program 1 times [2019-10-07 14:16:31,371 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:16:31,371 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:16:31,372 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:16:31,372 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:16:31,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:16:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:16:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-07 14:16:31,688 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:16:31,688 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:16:31,688 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 14:16:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:16:32,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 3401 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 14:16:32,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:16:32,539 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-10-07 14:16:32,539 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:16:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-10-07 14:16:32,949 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:16:32,949 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [19] total 22 [2019-10-07 14:16:32,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:16:32,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:16:32,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:16:32,951 INFO L87 Difference]: Start difference. First operand 55592 states and 98681 transitions. Second operand 5 states. [2019-10-07 14:16:33,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:16:33,775 INFO L93 Difference]: Finished difference Result 55811 states and 98925 transitions. [2019-10-07 14:16:33,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:16:33,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2019-10-07 14:16:33,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:16:33,952 INFO L225 Difference]: With dead ends: 55811 [2019-10-07 14:16:33,952 INFO L226 Difference]: Without dead ends: 55592 [2019-10-07 14:16:33,980 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 387 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:16:34,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55592 states. [2019-10-07 14:16:35,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55592 to 55592. [2019-10-07 14:16:35,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55592 states. [2019-10-07 14:16:35,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55592 states to 55592 states and 98557 transitions. [2019-10-07 14:16:35,706 INFO L78 Accepts]: Start accepts. Automaton has 55592 states and 98557 transitions. Word has length 191 [2019-10-07 14:16:35,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:16:35,706 INFO L462 AbstractCegarLoop]: Abstraction has 55592 states and 98557 transitions. [2019-10-07 14:16:35,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:16:35,706 INFO L276 IsEmpty]: Start isEmpty. Operand 55592 states and 98557 transitions. [2019-10-07 14:16:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-07 14:16:35,713 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:16:35,713 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:16:35,914 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:16:35,914 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:16:35,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:16:35,915 INFO L82 PathProgramCache]: Analyzing trace with hash -652449500, now seen corresponding path program 1 times [2019-10-07 14:16:35,915 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:16:35,916 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:16:35,916 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:16:35,916 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:16:35,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:16:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:16:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-07 14:16:36,249 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:16:36,249 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:16:36,249 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 14:16:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:16:37,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 3444 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-07 14:16:37,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:16:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-07 14:16:37,252 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:16:37,943 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:16:37,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:16:37,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:16:37,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:16:37,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:16:37,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:16:37,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:16:37,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:16:37,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:16:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:16:38,086 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:16:38,086 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [19] total 33 [2019-10-07 14:16:38,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-07 14:16:38,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-07 14:16:38,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2019-10-07 14:16:38,088 INFO L87 Difference]: Start difference. First operand 55592 states and 98557 transitions. Second operand 16 states. [2019-10-07 14:16:45,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:16:45,743 INFO L93 Difference]: Finished difference Result 129179 states and 237861 transitions. [2019-10-07 14:16:45,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-07 14:16:45,744 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 206 [2019-10-07 14:16:45,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:16:45,992 INFO L225 Difference]: With dead ends: 129179 [2019-10-07 14:16:45,993 INFO L226 Difference]: Without dead ends: 66307 [2019-10-07 14:16:46,097 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 414 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=261, Invalid=1995, Unknown=0, NotChecked=0, Total=2256 [2019-10-07 14:16:46,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66307 states. [2019-10-07 14:16:48,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66307 to 65685. [2019-10-07 14:16:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65685 states. [2019-10-07 14:16:48,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65685 states to 65685 states and 115511 transitions. [2019-10-07 14:16:48,576 INFO L78 Accepts]: Start accepts. Automaton has 65685 states and 115511 transitions. Word has length 206 [2019-10-07 14:16:48,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:16:48,577 INFO L462 AbstractCegarLoop]: Abstraction has 65685 states and 115511 transitions. [2019-10-07 14:16:48,577 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-07 14:16:48,577 INFO L276 IsEmpty]: Start isEmpty. Operand 65685 states and 115511 transitions. [2019-10-07 14:16:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-07 14:16:48,583 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:16:48,584 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:16:48,785 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:16:48,786 INFO L410 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:16:48,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:16:48,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1775356661, now seen corresponding path program 1 times [2019-10-07 14:16:48,787 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:16:48,788 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:16:48,788 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:16:48,788 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:16:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:16:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:16:49,097 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-07 14:16:49,098 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:16:49,098 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:16:49,098 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 14:16:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:16:52,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 3448 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-07 14:16:52,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:16:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-10-07 14:16:52,594 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:16:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-07 14:16:53,285 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:16:53,285 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 31 [2019-10-07 14:16:53,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:16:53,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:16:53,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=837, Unknown=0, NotChecked=0, Total=930 [2019-10-07 14:16:53,286 INFO L87 Difference]: Start difference. First operand 65685 states and 115511 transitions. Second operand 14 states. [2019-10-07 14:17:00,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:00,479 INFO L93 Difference]: Finished difference Result 153642 states and 281600 transitions. [2019-10-07 14:17:00,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:17:00,480 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 207 [2019-10-07 14:17:00,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:00,783 INFO L225 Difference]: With dead ends: 153642 [2019-10-07 14:17:00,783 INFO L226 Difference]: Without dead ends: 87967 [2019-10-07 14:17:00,900 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=1610, Unknown=0, NotChecked=0, Total=1806 [2019-10-07 14:17:00,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87967 states. [2019-10-07 14:17:03,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87967 to 87500. [2019-10-07 14:17:03,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87500 states. [2019-10-07 14:17:03,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87500 states to 87500 states and 145446 transitions. [2019-10-07 14:17:03,515 INFO L78 Accepts]: Start accepts. Automaton has 87500 states and 145446 transitions. Word has length 207 [2019-10-07 14:17:03,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:17:03,516 INFO L462 AbstractCegarLoop]: Abstraction has 87500 states and 145446 transitions. [2019-10-07 14:17:03,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:17:03,516 INFO L276 IsEmpty]: Start isEmpty. Operand 87500 states and 145446 transitions. [2019-10-07 14:17:03,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-07 14:17:03,521 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:03,521 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:17:03,729 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:17:03,730 INFO L410 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:03,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:03,731 INFO L82 PathProgramCache]: Analyzing trace with hash -122246350, now seen corresponding path program 1 times [2019-10-07 14:17:03,731 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:03,731 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:03,732 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:03,732 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:03,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-07 14:17:04,101 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:04,101 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:17:04,101 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 14:17:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:04,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 3453 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-07 14:17:04,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:17:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-07 14:17:05,064 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:17:05,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:17:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-07 14:17:05,547 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:17:05,548 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [19] total 26 [2019-10-07 14:17:05,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:17:05,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:17:05,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2019-10-07 14:17:05,549 INFO L87 Difference]: Start difference. First operand 87500 states and 145446 transitions. Second operand 9 states. [2019-10-07 14:17:07,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:07,182 INFO L93 Difference]: Finished difference Result 88767 states and 146901 transitions. [2019-10-07 14:17:07,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 14:17:07,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 209 [2019-10-07 14:17:07,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:07,541 INFO L225 Difference]: With dead ends: 88767 [2019-10-07 14:17:07,542 INFO L226 Difference]: Without dead ends: 88548 [2019-10-07 14:17:07,577 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2019-10-07 14:17:07,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88548 states. [2019-10-07 14:17:10,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88548 to 88446. [2019-10-07 14:17:10,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88446 states. [2019-10-07 14:17:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88446 states to 88446 states and 146394 transitions. [2019-10-07 14:17:10,262 INFO L78 Accepts]: Start accepts. Automaton has 88446 states and 146394 transitions. Word has length 209 [2019-10-07 14:17:10,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:17:10,263 INFO L462 AbstractCegarLoop]: Abstraction has 88446 states and 146394 transitions. [2019-10-07 14:17:10,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:17:10,263 INFO L276 IsEmpty]: Start isEmpty. Operand 88446 states and 146394 transitions. [2019-10-07 14:17:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2019-10-07 14:17:10,268 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:10,269 INFO L385 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 8, 8, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:17:10,469 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:17:10,470 INFO L410 AbstractCegarLoop]: === Iteration 23 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:10,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:10,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2054933687, now seen corresponding path program 1 times [2019-10-07 14:17:10,471 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:10,471 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:10,471 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:10,472 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2019-10-07 14:17:12,040 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:12,040 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:17:12,040 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 14:17:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:13,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 4339 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-07 14:17:13,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:17:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 110 proven. 238 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2019-10-07 14:17:16,820 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:17:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 38 proven. 49 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2019-10-07 14:17:18,217 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:17:18,258 INFO L162 IcfgInterpreter]: Started Sifa with 188 locations of interest [2019-10-07 14:17:18,258 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:17:18,266 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:17:18,281 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:17:18,282 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:17:57,951 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 762 [2019-10-07 14:18:02,366 WARN L191 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:18:02,747 WARN L191 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 848 [2019-10-07 14:18:03,015 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 848 [2019-10-07 14:18:03,229 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 848 [2019-10-07 14:18:03,752 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:18:04,222 WARN L191 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:18:04,692 WARN L191 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:18:05,221 WARN L191 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:18:06,134 WARN L191 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 1038 DAG size of output: 1036 [2019-10-07 14:18:06,595 WARN L191 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:18:07,129 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:18:07,578 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:18:08,037 WARN L191 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:18:08,535 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:18:08,552 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 388 for LOIs [2019-10-07 14:18:08,765 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 731 [2019-10-07 14:18:08,873 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 731 [2019-10-07 14:18:09,226 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 919 [2019-10-07 14:18:09,227 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1084 for LOIs [2019-10-07 14:18:09,661 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:10,100 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:10,226 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:10,987 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:11,437 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:11,878 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:12,009 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:12,771 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:13,245 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:13,682 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:13,810 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:14,573 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:15,358 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 1258 DAG size of output: 1084 [2019-10-07 14:18:15,794 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:16,067 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:16,951 WARN L191 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:17,399 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:17,837 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:17,961 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:18,719 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:19,167 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:19,604 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:19,724 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:20,473 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:20,925 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:21,364 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:21,485 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:22,234 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:22,677 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:23,129 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:23,257 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:24,290 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:24,728 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:25,166 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:25,289 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:26,056 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:26,496 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:26,933 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:27,053 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:27,817 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:28,255 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:28,697 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:28,819 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:29,572 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:30,019 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:30,457 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:30,578 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:31,335 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:31,771 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:32,219 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1084 [2019-10-07 14:18:32,339 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:33,090 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:34,442 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:35,199 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:35,333 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:36,082 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:37,506 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:18:38,258 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:38,392 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:39,153 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:39,904 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:40,656 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:40,776 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:18:41,531 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:18:43,290 WARN L191 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:18:44,089 WARN L191 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:18:44,218 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:18:44,970 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:18:46,510 WARN L191 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:18:47,266 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:18:47,407 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:18:48,163 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:18:48,928 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:18:49,690 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:18:49,813 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:18:50,570 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:18:51,335 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1265 [2019-10-07 14:18:52,098 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1265 [2019-10-07 14:18:52,223 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:18:52,982 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1265 [2019-10-07 14:18:53,742 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:18:54,512 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:18:54,644 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:18:55,409 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:18:56,241 WARN L191 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:18:57,000 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:18:57,131 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:18:57,888 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:18:58,664 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:18:59,430 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:18:59,701 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:19:00,521 WARN L191 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:19:01,289 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:19:02,063 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:19:02,186 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:19:02,959 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:19:04,353 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:19:05,099 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:05,299 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:19:06,047 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:07,398 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:19:08,151 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:08,279 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:19:09,028 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:09,783 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:10,526 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:10,647 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:19:11,394 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:12,166 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:19:12,913 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:19:13,042 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:19:13,793 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:19:15,148 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:19:15,894 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:19:16,022 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:19:16,781 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:19:18,122 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:19:18,879 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:19:19,001 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:19:19,770 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:19:21,131 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1267 DAG size of output: 1258 [2019-10-07 14:19:21,887 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:19:22,015 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:19:22,768 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:19:24,135 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1269 DAG size of output: 1260 [2019-10-07 14:19:24,890 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:19:25,018 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:19:25,771 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:19:27,136 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:19:27,886 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:28,013 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:19:28,764 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:30,142 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:19:30,883 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:31,008 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:19:31,747 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:32,487 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:33,232 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:33,351 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:19:34,097 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:35,481 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:19:36,228 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:36,355 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:19:37,090 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:38,434 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:19:39,182 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:39,310 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:19:40,061 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:40,808 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:41,551 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:41,671 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:19:42,417 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:43,775 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:19:44,527 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:19:44,655 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:19:45,409 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:19:46,161 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:19:46,918 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:19:47,048 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:19:47,799 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:19:49,143 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:19:49,896 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:19:50,020 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:19:50,772 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:19:52,055 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:19:52,802 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:19:52,932 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:19:53,689 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:19:55,066 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:19:55,829 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:55,954 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:19:56,705 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:58,060 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:19:58,820 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:19:58,949 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:19:59,705 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:00,458 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:01,231 WARN L191 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:01,351 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:20:02,100 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:03,455 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:20:04,201 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:20:04,328 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:20:05,080 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:20:05,854 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:20:06,617 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:20:06,772 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:20:07,528 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:20:08,880 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:20:09,629 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:20:09,751 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:20:10,510 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:20:11,885 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1267 DAG size of output: 1260 [2019-10-07 14:20:12,656 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:20:12,808 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:20:13,573 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:20:14,938 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1269 DAG size of output: 1262 [2019-10-07 14:20:15,693 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:20:15,827 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:20:16,589 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:20:17,382 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:20:18,141 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:20:18,273 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:20:19,043 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:20:19,807 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:20:20,562 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:20:20,693 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:20:21,453 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1267 [2019-10-07 14:20:22,813 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:20:23,556 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:23,682 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:20:24,430 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:25,787 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:20:26,542 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:26,667 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:20:27,422 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:28,178 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:28,934 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:29,055 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:20:29,811 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:31,206 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:20:31,948 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:20:32,076 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:20:32,825 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:20:33,588 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:20:34,355 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:20:34,483 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:20:35,249 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:20:36,588 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:20:37,336 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:20:37,459 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:20:38,211 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:20:39,487 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:20:40,238 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:20:40,366 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:20:41,123 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:20:42,428 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 14:20:43,186 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:20:43,317 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:20:44,078 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:20:45,464 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:20:46,213 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:46,341 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:20:47,118 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:48,501 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:20:49,257 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:49,394 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:20:50,143 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:51,523 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:20:52,285 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:52,429 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:20:53,175 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:54,570 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:20:55,313 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:55,441 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:20:56,179 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:56,946 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:57,691 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:57,813 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:20:58,556 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:20:59,334 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:21:00,086 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:21:00,212 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:21:00,959 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:21:01,751 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:21:02,516 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:21:02,651 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:21:03,404 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:21:03,411 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1110 for LOIs [2019-10-07 14:21:03,900 WARN L191 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:21:04,387 WARN L191 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:21:04,517 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:21:05,282 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:21:05,817 WARN L191 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:21:06,314 WARN L191 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:21:06,435 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:21:07,188 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:21:08,200 WARN L191 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 1258 DAG size of output: 1120 [2019-10-07 14:21:08,698 WARN L191 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:21:08,834 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:21:09,579 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:21:10,087 WARN L191 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:21:10,581 WARN L191 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:21:10,700 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:21:11,450 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:21:11,948 WARN L191 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:21:12,451 WARN L191 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:21:12,570 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:21:13,315 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:21:13,806 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:21:14,300 WARN L191 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:21:14,419 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:21:15,162 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:21:15,453 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:21:15,454 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 initPersonOnFloor 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 initPersonOnFloor at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.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 14:21:15,459 INFO L168 Benchmark]: Toolchain (without parser) took 365381.15 ms. Allocated memory was 143.1 MB in the beginning and 3.0 GB in the end (delta: 2.9 GB). Free memory was 98.0 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2019-10-07 14:21:15,459 INFO L168 Benchmark]: CDTParser took 1.30 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-07 14:21:15,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 978.64 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 97.8 MB in the beginning and 145.5 MB in the end (delta: -47.8 MB). Peak memory consumption was 34.1 MB. Max. memory is 7.1 GB. [2019-10-07 14:21:15,460 INFO L168 Benchmark]: Boogie Preprocessor took 173.47 ms. Allocated memory is still 201.3 MB. Free memory was 145.5 MB in the beginning and 136.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-07 14:21:15,460 INFO L168 Benchmark]: RCFGBuilder took 4722.79 ms. Allocated memory was 201.3 MB in the beginning and 315.1 MB in the end (delta: 113.8 MB). Free memory was 136.1 MB in the beginning and 92.7 MB in the end (delta: 43.4 MB). Peak memory consumption was 157.2 MB. Max. memory is 7.1 GB. [2019-10-07 14:21:15,461 INFO L168 Benchmark]: TraceAbstraction took 359501.79 ms. Allocated memory was 315.1 MB in the beginning and 3.0 GB in the end (delta: 2.7 GB). Free memory was 92.7 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2019-10-07 14:21:15,462 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.30 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 978.64 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 97.8 MB in the beginning and 145.5 MB in the end (delta: -47.8 MB). Peak memory consumption was 34.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 173.47 ms. Allocated memory is still 201.3 MB. Free memory was 145.5 MB in the beginning and 136.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4722.79 ms. Allocated memory was 201.3 MB in the beginning and 315.1 MB in the end (delta: 113.8 MB). Free memory was 136.1 MB in the beginning and 92.7 MB in the end (delta: 43.4 MB). Peak memory consumption was 157.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 359501.79 ms. Allocated memory was 315.1 MB in the beginning and 3.0 GB in the end (delta: 2.7 GB). Free memory was 92.7 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.0 GB. 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 initPersonOnFloor de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor: 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...