java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:53:49,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:53:49,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:53:49,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:53:49,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:53:49,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:53:49,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:53:49,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:53:49,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:53:49,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:53:49,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:53:49,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:53:49,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:53:49,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:53:49,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:53:49,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:53:49,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:53:49,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:53:49,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:53:49,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:53:49,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:53:49,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:53:49,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:53:49,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:53:49,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:53:49,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:53:49,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:53:49,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:53:49,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:53:49,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:53:49,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:53:49,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:53:49,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:53:49,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:53:49,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:53:49,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:53:49,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:53:49,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:53:49,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:53:49,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:53:49,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:53:49,778 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 13:53:49,810 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:53:49,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:53:49,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:53:49,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:53:49,815 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:53:49,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:53:49,819 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:53:49,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:53:49,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:53:49,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:53:49,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:53:49,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:53:49,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:53:49,820 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:53:49,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:53:49,820 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:53:49,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:53:49,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:53:49,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:53:49,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:53:49,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:53:49,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:53:49,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:53:49,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:53:49,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:53:49,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:53:49,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:53:49,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:53:49,824 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 13:53:50,126 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:53:50,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:53:50,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:53:50,151 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:53:50,151 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:53:50,152 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2019-10-07 13:53:50,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd9e845b4/1e5e114c6b5b41af8ac7533765c2de09/FLAGb4d399d61 [2019-10-07 13:53:50,865 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:53:50,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2019-10-07 13:53:50,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd9e845b4/1e5e114c6b5b41af8ac7533765c2de09/FLAGb4d399d61 [2019-10-07 13:53:51,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd9e845b4/1e5e114c6b5b41af8ac7533765c2de09 [2019-10-07 13:53:51,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:53:51,099 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:53:51,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:53:51,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:53:51,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:53:51,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:53:51" (1/1) ... [2019-10-07 13:53:51,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@958021d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:53:51, skipping insertion in model container [2019-10-07 13:53:51,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:53:51" (1/1) ... [2019-10-07 13:53:51,114 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:53:51,194 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:53:51,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:53:51,897 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:53:52,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:53:52,150 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:53:52,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:53:52 WrapperNode [2019-10-07 13:53:52,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:53:52,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:53:52,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:53:52,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:53:52,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:53:52" (1/1) ... [2019-10-07 13:53:52,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:53:52" (1/1) ... [2019-10-07 13:53:52,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:53:52" (1/1) ... [2019-10-07 13:53:52,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:53:52" (1/1) ... [2019-10-07 13:53:52,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:53:52" (1/1) ... [2019-10-07 13:53:52,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:53:52" (1/1) ... [2019-10-07 13:53:52,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:53:52" (1/1) ... [2019-10-07 13:53:52,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:53:52,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:53:52,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:53:52,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:53:52,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:53:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:53:52,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:53:52,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:53:52,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 13:53:52,432 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 13:53:52,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 13:53:52,432 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 13:53:52,432 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 13:53:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 13:53:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 13:53:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 13:53:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 13:53:52,434 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 13:53:52,434 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 13:53:52,434 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 13:53:52,434 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 13:53:52,434 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 13:53:52,435 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 13:53:52,435 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 13:53:52,435 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 13:53:52,435 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 13:53:52,436 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 13:53:52,436 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 13:53:52,436 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 13:53:52,437 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 13:53:52,437 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 13:53:52,437 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 13:53:52,437 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 13:53:52,437 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 13:53:52,437 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 13:53:52,438 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 13:53:52,438 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 13:53:52,438 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 13:53:52,438 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 13:53:52,438 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 13:53:52,438 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:53:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 13:53:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 13:53:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 13:53:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 13:53:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 13:53:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 13:53:52,440 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 13:53:52,440 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 13:53:52,440 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 13:53:52,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 13:53:52,440 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 13:53:52,441 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 13:53:52,441 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 13:53:52,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 13:53:52,441 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 13:53:52,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 13:53:52,441 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-07 13:53:52,442 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 13:53:52,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 13:53:52,442 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 13:53:52,442 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-07 13:53:52,442 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 13:53:52,442 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 13:53:52,443 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 13:53:52,443 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 13:53:52,443 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 13:53:52,443 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 13:53:52,443 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 13:53:52,444 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 13:53:52,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 13:53:52,444 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 13:53:52,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-07 13:53:52,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-07 13:53:52,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 13:53:52,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 13:53:52,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 13:53:52,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 13:53:52,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 13:53:52,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 13:53:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:53:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:53:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 13:53:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 13:53:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 13:53:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 13:53:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 13:53:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 13:53:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 13:53:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 13:53:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 13:53:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 13:53:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 13:53:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 13:53:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 13:53:52,449 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 13:53:52,449 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 13:53:52,449 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 13:53:52,449 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 13:53:52,449 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 13:53:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 13:53:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 13:53:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 13:53:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 13:53:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 13:53:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 13:53:52,451 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 13:53:52,451 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 13:53:52,451 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 13:53:52,451 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 13:53:52,451 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 13:53:52,451 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 13:53:52,452 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 13:53:52,452 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 13:53:52,452 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 13:53:52,452 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 13:53:52,452 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 13:53:52,452 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 13:53:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 13:53:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 13:53:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:53:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 13:53:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 13:53:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 13:53:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 13:53:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 13:53:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 13:53:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 13:53:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 13:53:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 13:53:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 13:53:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 13:53:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 13:53:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 13:53:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 13:53:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 13:53:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-07 13:53:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 13:53:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 13:53:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-07 13:53:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 13:53:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 13:53:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 13:53:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-07 13:53:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-07 13:53:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 13:53:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 13:53:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 13:53:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 13:53:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 13:53:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 13:53:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:53:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:53:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 13:53:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:53:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:53:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:53:52,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:53:52,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 13:53:52,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:53:52,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 13:53:52,460 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 13:53:52,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:53:52,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 13:53:52,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 13:53:52,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 13:53:52,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:53:52,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 13:53:52,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:53:57,383 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:53:57,384 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 13:53:57,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:53:57 BoogieIcfgContainer [2019-10-07 13:53:57,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:53:57,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:53:57,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:53:57,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:53:57,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:53:51" (1/3) ... [2019-10-07 13:53:57,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512f3882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:53:57, skipping insertion in model container [2019-10-07 13:53:57,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:53:52" (2/3) ... [2019-10-07 13:53:57,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512f3882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:53:57, skipping insertion in model container [2019-10-07 13:53:57,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:53:57" (3/3) ... [2019-10-07 13:53:57,395 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2019-10-07 13:53:57,405 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:53:57,415 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:53:57,428 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:53:57,466 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:53:57,466 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:53:57,466 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:53:57,466 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:53:57,466 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:53:57,466 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:53:57,466 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:53:57,467 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:53:57,500 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states. [2019-10-07 13:53:57,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-07 13:53:57,530 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:53:57,531 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:53:57,533 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:53:57,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:53:57,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1111209335, now seen corresponding path program 1 times [2019-10-07 13:53:57,549 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:53:57,549 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:53:57,550 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:53:57,550 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:53:57,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:53:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:53:58,382 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:53:58,382 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:53:58,383 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:53:58,383 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:53:58,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:53:58,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:53:58,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:53:58,407 INFO L87 Difference]: Start difference. First operand 587 states. Second operand 7 states. [2019-10-07 13:53:58,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:53:58,978 INFO L93 Difference]: Finished difference Result 1376 states and 2124 transitions. [2019-10-07 13:53:58,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 13:53:58,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2019-10-07 13:53:58,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:53:59,005 INFO L225 Difference]: With dead ends: 1376 [2019-10-07 13:53:59,005 INFO L226 Difference]: Without dead ends: 912 [2019-10-07 13:53:59,016 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:53:59,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2019-10-07 13:53:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 896. [2019-10-07 13:53:59,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2019-10-07 13:53:59,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1361 transitions. [2019-10-07 13:53:59,230 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1361 transitions. Word has length 127 [2019-10-07 13:53:59,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:53:59,231 INFO L462 AbstractCegarLoop]: Abstraction has 896 states and 1361 transitions. [2019-10-07 13:53:59,231 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:53:59,231 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1361 transitions. [2019-10-07 13:53:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-07 13:53:59,245 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:53:59,246 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:53:59,246 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:53:59,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:53:59,247 INFO L82 PathProgramCache]: Analyzing trace with hash 664979498, now seen corresponding path program 1 times [2019-10-07 13:53:59,247 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:53:59,248 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:53:59,248 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:53:59,248 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:53:59,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:53:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:53:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:53:59,634 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:53:59,635 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:53:59,635 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:53:59,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:53:59,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:53:59,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:53:59,650 INFO L87 Difference]: Start difference. First operand 896 states and 1361 transitions. Second operand 7 states. [2019-10-07 13:53:59,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:53:59,758 INFO L93 Difference]: Finished difference Result 1353 states and 2073 transitions. [2019-10-07 13:53:59,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 13:53:59,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-10-07 13:53:59,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:53:59,772 INFO L225 Difference]: With dead ends: 1353 [2019-10-07 13:53:59,772 INFO L226 Difference]: Without dead ends: 918 [2019-10-07 13:53:59,776 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:53:59,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2019-10-07 13:53:59,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 910. [2019-10-07 13:53:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2019-10-07 13:53:59,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1381 transitions. [2019-10-07 13:53:59,842 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1381 transitions. Word has length 132 [2019-10-07 13:53:59,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:53:59,845 INFO L462 AbstractCegarLoop]: Abstraction has 910 states and 1381 transitions. [2019-10-07 13:53:59,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:53:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1381 transitions. [2019-10-07 13:53:59,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-07 13:53:59,856 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:53:59,857 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:53:59,857 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:53:59,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:53:59,858 INFO L82 PathProgramCache]: Analyzing trace with hash -220183967, now seen corresponding path program 1 times [2019-10-07 13:53:59,858 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:53:59,858 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:53:59,858 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:53:59,858 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:53:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:53:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:00,112 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:00,112 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:54:00,113 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:54:00,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:54:00,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:54:00,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:54:00,114 INFO L87 Difference]: Start difference. First operand 910 states and 1381 transitions. Second operand 7 states. [2019-10-07 13:54:00,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:00,291 INFO L93 Difference]: Finished difference Result 1370 states and 2095 transitions. [2019-10-07 13:54:00,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 13:54:00,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-07 13:54:00,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:00,298 INFO L225 Difference]: With dead ends: 1370 [2019-10-07 13:54:00,298 INFO L226 Difference]: Without dead ends: 928 [2019-10-07 13:54:00,301 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:54:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2019-10-07 13:54:00,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 912. [2019-10-07 13:54:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2019-10-07 13:54:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1383 transitions. [2019-10-07 13:54:00,343 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1383 transitions. Word has length 131 [2019-10-07 13:54:00,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:00,344 INFO L462 AbstractCegarLoop]: Abstraction has 912 states and 1383 transitions. [2019-10-07 13:54:00,344 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:54:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1383 transitions. [2019-10-07 13:54:00,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-07 13:54:00,348 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:00,349 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:00,349 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:00,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:00,349 INFO L82 PathProgramCache]: Analyzing trace with hash 82949642, now seen corresponding path program 1 times [2019-10-07 13:54:00,350 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:00,350 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:00,350 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:00,350 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:00,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:00,542 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:00,542 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:54:00,542 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:54:00,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:54:00,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:54:00,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:54:00,544 INFO L87 Difference]: Start difference. First operand 912 states and 1383 transitions. Second operand 7 states. [2019-10-07 13:54:00,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:00,636 INFO L93 Difference]: Finished difference Result 1373 states and 2098 transitions. [2019-10-07 13:54:00,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 13:54:00,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-10-07 13:54:00,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:00,644 INFO L225 Difference]: With dead ends: 1373 [2019-10-07 13:54:00,644 INFO L226 Difference]: Without dead ends: 930 [2019-10-07 13:54:00,647 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:54:00,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2019-10-07 13:54:00,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 914. [2019-10-07 13:54:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2019-10-07 13:54:00,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1385 transitions. [2019-10-07 13:54:00,686 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1385 transitions. Word has length 132 [2019-10-07 13:54:00,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:00,687 INFO L462 AbstractCegarLoop]: Abstraction has 914 states and 1385 transitions. [2019-10-07 13:54:00,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:54:00,687 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1385 transitions. [2019-10-07 13:54:00,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-07 13:54:00,691 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:00,691 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:00,692 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:00,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:00,692 INFO L82 PathProgramCache]: Analyzing trace with hash -944116094, now seen corresponding path program 1 times [2019-10-07 13:54:00,692 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:00,693 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:00,693 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:00,693 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:00,892 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:00,893 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:54:00,893 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 13:54:00,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:54:00,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:54:00,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:54:00,895 INFO L87 Difference]: Start difference. First operand 914 states and 1385 transitions. Second operand 4 states. [2019-10-07 13:54:02,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:02,156 INFO L93 Difference]: Finished difference Result 1929 states and 2950 transitions. [2019-10-07 13:54:02,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:54:02,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2019-10-07 13:54:02,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:02,174 INFO L225 Difference]: With dead ends: 1929 [2019-10-07 13:54:02,174 INFO L226 Difference]: Without dead ends: 1360 [2019-10-07 13:54:02,182 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:54:02,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2019-10-07 13:54:02,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1341. [2019-10-07 13:54:02,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2019-10-07 13:54:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2001 transitions. [2019-10-07 13:54:02,253 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2001 transitions. Word has length 136 [2019-10-07 13:54:02,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:02,254 INFO L462 AbstractCegarLoop]: Abstraction has 1341 states and 2001 transitions. [2019-10-07 13:54:02,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:54:02,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2001 transitions. [2019-10-07 13:54:02,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-07 13:54:02,258 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:02,258 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:02,258 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:02,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:02,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1326904735, now seen corresponding path program 1 times [2019-10-07 13:54:02,259 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:02,259 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:02,259 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:02,259 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:02,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:02,489 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:02,489 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:54:02,490 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 13:54:02,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:54:02,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:54:02,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:54:02,494 INFO L87 Difference]: Start difference. First operand 1341 states and 2001 transitions. Second operand 4 states. [2019-10-07 13:54:04,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:04,090 INFO L93 Difference]: Finished difference Result 5137 states and 8024 transitions. [2019-10-07 13:54:04,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:54:04,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2019-10-07 13:54:04,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:04,127 INFO L225 Difference]: With dead ends: 5137 [2019-10-07 13:54:04,128 INFO L226 Difference]: Without dead ends: 3833 [2019-10-07 13:54:04,144 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:54:04,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2019-10-07 13:54:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3780. [2019-10-07 13:54:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3780 states. [2019-10-07 13:54:04,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 5804 transitions. [2019-10-07 13:54:04,397 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 5804 transitions. Word has length 139 [2019-10-07 13:54:04,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:04,399 INFO L462 AbstractCegarLoop]: Abstraction has 3780 states and 5804 transitions. [2019-10-07 13:54:04,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:54:04,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 5804 transitions. [2019-10-07 13:54:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-07 13:54:04,403 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:04,403 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:04,404 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:04,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1631885335, now seen corresponding path program 1 times [2019-10-07 13:54:04,404 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:04,404 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:04,405 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:04,405 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:04,593 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:04,593 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:54:04,593 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 13:54:04,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:54:04,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:54:04,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:54:04,596 INFO L87 Difference]: Start difference. First operand 3780 states and 5804 transitions. Second operand 5 states. [2019-10-07 13:54:05,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:05,470 INFO L93 Difference]: Finished difference Result 6450 states and 9952 transitions. [2019-10-07 13:54:05,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:54:05,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2019-10-07 13:54:05,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:05,500 INFO L225 Difference]: With dead ends: 6450 [2019-10-07 13:54:05,500 INFO L226 Difference]: Without dead ends: 3820 [2019-10-07 13:54:05,518 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:54:05,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2019-10-07 13:54:05,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 3795. [2019-10-07 13:54:05,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3795 states. [2019-10-07 13:54:05,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3795 states to 3795 states and 5825 transitions. [2019-10-07 13:54:05,707 INFO L78 Accepts]: Start accepts. Automaton has 3795 states and 5825 transitions. Word has length 141 [2019-10-07 13:54:05,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:05,709 INFO L462 AbstractCegarLoop]: Abstraction has 3795 states and 5825 transitions. [2019-10-07 13:54:05,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:54:05,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3795 states and 5825 transitions. [2019-10-07 13:54:05,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-07 13:54:05,716 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:05,717 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:05,717 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:05,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:05,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1188179512, now seen corresponding path program 1 times [2019-10-07 13:54:05,719 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:05,719 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:05,719 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:05,719 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 13:54:06,067 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:06,067 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:54:06,067 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 13:54:06,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:54:06,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:54:06,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:54:06,069 INFO L87 Difference]: Start difference. First operand 3795 states and 5825 transitions. Second operand 4 states. [2019-10-07 13:54:06,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:06,316 INFO L93 Difference]: Finished difference Result 6980 states and 10991 transitions. [2019-10-07 13:54:06,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:54:06,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-07 13:54:06,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:06,351 INFO L225 Difference]: With dead ends: 6980 [2019-10-07 13:54:06,351 INFO L226 Difference]: Without dead ends: 4089 [2019-10-07 13:54:06,371 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 13:54:06,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4089 states. [2019-10-07 13:54:06,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4089 to 4089. [2019-10-07 13:54:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4089 states. [2019-10-07 13:54:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 6315 transitions. [2019-10-07 13:54:06,639 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 6315 transitions. Word has length 145 [2019-10-07 13:54:06,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:06,640 INFO L462 AbstractCegarLoop]: Abstraction has 4089 states and 6315 transitions. [2019-10-07 13:54:06,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:54:06,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 6315 transitions. [2019-10-07 13:54:06,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-07 13:54:06,647 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:06,647 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:06,647 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:06,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:06,648 INFO L82 PathProgramCache]: Analyzing trace with hash -235512630, now seen corresponding path program 1 times [2019-10-07 13:54:06,648 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:06,648 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:06,649 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:06,649 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:06,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 13:54:06,841 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:06,841 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:06,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:07,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:54:07,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:54:07,725 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 13:54:07,918 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:54:07,918 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-10-07 13:54:07,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:54:07,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:54:07,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:54:07,919 INFO L87 Difference]: Start difference. First operand 4089 states and 6315 transitions. Second operand 4 states. [2019-10-07 13:54:08,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:08,121 INFO L93 Difference]: Finished difference Result 8195 states and 12858 transitions. [2019-10-07 13:54:08,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:54:08,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-07 13:54:08,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:08,155 INFO L225 Difference]: With dead ends: 8195 [2019-10-07 13:54:08,156 INFO L226 Difference]: Without dead ends: 4143 [2019-10-07 13:54:08,182 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:54:08,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2019-10-07 13:54:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2019-10-07 13:54:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4143 states. [2019-10-07 13:54:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 6369 transitions. [2019-10-07 13:54:08,403 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 6369 transitions. Word has length 145 [2019-10-07 13:54:08,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:08,404 INFO L462 AbstractCegarLoop]: Abstraction has 4143 states and 6369 transitions. [2019-10-07 13:54:08,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:54:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 6369 transitions. [2019-10-07 13:54:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-07 13:54:08,409 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:08,409 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:08,618 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:08,619 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:08,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:08,620 INFO L82 PathProgramCache]: Analyzing trace with hash 679132033, now seen corresponding path program 1 times [2019-10-07 13:54:08,620 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:08,620 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:08,621 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:08,621 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:08,881 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:08,882 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:09,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:54:09,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-07 13:54:10,016 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 13:54:10,203 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:54:10,203 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-07 13:54:10,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:54:10,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:54:10,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:54:10,206 INFO L87 Difference]: Start difference. First operand 4143 states and 6369 transitions. Second operand 5 states. [2019-10-07 13:54:10,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:10,401 INFO L93 Difference]: Finished difference Result 8276 states and 12880 transitions. [2019-10-07 13:54:10,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:54:10,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-10-07 13:54:10,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:10,459 INFO L225 Difference]: With dead ends: 8276 [2019-10-07 13:54:10,459 INFO L226 Difference]: Without dead ends: 4134 [2019-10-07 13:54:10,487 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:54:10,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2019-10-07 13:54:10,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 4134. [2019-10-07 13:54:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4134 states. [2019-10-07 13:54:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4134 states to 4134 states and 6333 transitions. [2019-10-07 13:54:10,728 INFO L78 Accepts]: Start accepts. Automaton has 4134 states and 6333 transitions. Word has length 147 [2019-10-07 13:54:10,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:10,729 INFO L462 AbstractCegarLoop]: Abstraction has 4134 states and 6333 transitions. [2019-10-07 13:54:10,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:54:10,730 INFO L276 IsEmpty]: Start isEmpty. Operand 4134 states and 6333 transitions. [2019-10-07 13:54:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-07 13:54:10,734 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:10,734 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:10,945 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:10,945 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:10,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:10,946 INFO L82 PathProgramCache]: Analyzing trace with hash -361513471, now seen corresponding path program 1 times [2019-10-07 13:54:10,946 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:10,946 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:10,946 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:10,946 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 13:54:11,111 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:11,111 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:11,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:12,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 2985 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:54:12,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:12,249 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:54:12,250 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:12,493 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:54:12,493 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-10-07 13:54:12,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:54:12,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:54:12,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:54:12,495 INFO L87 Difference]: Start difference. First operand 4134 states and 6333 transitions. Second operand 5 states. [2019-10-07 13:54:13,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:13,914 INFO L93 Difference]: Finished difference Result 10619 states and 16979 transitions. [2019-10-07 13:54:13,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:54:13,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-10-07 13:54:13,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:13,961 INFO L225 Difference]: With dead ends: 10619 [2019-10-07 13:54:13,962 INFO L226 Difference]: Without dead ends: 6522 [2019-10-07 13:54:13,983 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 288 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:54:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6522 states. [2019-10-07 13:54:14,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6522 to 6443. [2019-10-07 13:54:14,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6443 states. [2019-10-07 13:54:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6443 states to 6443 states and 10008 transitions. [2019-10-07 13:54:14,326 INFO L78 Accepts]: Start accepts. Automaton has 6443 states and 10008 transitions. Word has length 148 [2019-10-07 13:54:14,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:14,327 INFO L462 AbstractCegarLoop]: Abstraction has 6443 states and 10008 transitions. [2019-10-07 13:54:14,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:54:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 6443 states and 10008 transitions. [2019-10-07 13:54:14,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-07 13:54:14,335 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:14,335 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:14,553 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:14,554 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:14,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:14,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1998222068, now seen corresponding path program 1 times [2019-10-07 13:54:14,554 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:14,555 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:14,555 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:14,555 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:15,399 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:15,400 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:16,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-07 13:54:16,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:16,184 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 13:54:16,184 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:16,501 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:54:16,501 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2019-10-07 13:54:16,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:54:16,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:54:16,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-07 13:54:16,505 INFO L87 Difference]: Start difference. First operand 6443 states and 10008 transitions. Second operand 7 states. [2019-10-07 13:54:18,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:18,414 INFO L93 Difference]: Finished difference Result 14122 states and 22435 transitions. [2019-10-07 13:54:18,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 13:54:18,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2019-10-07 13:54:18,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:18,471 INFO L225 Difference]: With dead ends: 14122 [2019-10-07 13:54:18,471 INFO L226 Difference]: Without dead ends: 7716 [2019-10-07 13:54:18,575 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 287 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-10-07 13:54:18,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7716 states. [2019-10-07 13:54:18,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7716 to 7692. [2019-10-07 13:54:18,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7692 states. [2019-10-07 13:54:18,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 12348 transitions. [2019-10-07 13:54:18,981 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 12348 transitions. Word has length 149 [2019-10-07 13:54:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:18,982 INFO L462 AbstractCegarLoop]: Abstraction has 7692 states and 12348 transitions. [2019-10-07 13:54:18,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:54:18,982 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 12348 transitions. [2019-10-07 13:54:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-07 13:54:18,986 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:18,987 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:19,203 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:19,204 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:19,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:19,204 INFO L82 PathProgramCache]: Analyzing trace with hash 2041451364, now seen corresponding path program 1 times [2019-10-07 13:54:19,204 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:19,204 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:19,204 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:19,205 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:19,389 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:19,390 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:19,390 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:19,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:19,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:54:19,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 13:54:20,007 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:20,177 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:54:20,177 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 8 [2019-10-07 13:54:20,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:54:20,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:54:20,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:54:20,178 INFO L87 Difference]: Start difference. First operand 7692 states and 12348 transitions. Second operand 5 states. [2019-10-07 13:54:20,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:20,501 INFO L93 Difference]: Finished difference Result 15488 states and 25497 transitions. [2019-10-07 13:54:20,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:54:20,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2019-10-07 13:54:20,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:20,554 INFO L225 Difference]: With dead ends: 15488 [2019-10-07 13:54:20,554 INFO L226 Difference]: Without dead ends: 7846 [2019-10-07 13:54:20,595 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 293 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:54:20,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7846 states. [2019-10-07 13:54:21,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7846 to 7768. [2019-10-07 13:54:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7768 states. [2019-10-07 13:54:21,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7768 states to 7768 states and 12426 transitions. [2019-10-07 13:54:21,171 INFO L78 Accepts]: Start accepts. Automaton has 7768 states and 12426 transitions. Word has length 149 [2019-10-07 13:54:21,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:21,172 INFO L462 AbstractCegarLoop]: Abstraction has 7768 states and 12426 transitions. [2019-10-07 13:54:21,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:54:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 7768 states and 12426 transitions. [2019-10-07 13:54:21,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-07 13:54:21,177 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:21,177 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:21,385 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:21,385 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:21,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:21,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1813353105, now seen corresponding path program 1 times [2019-10-07 13:54:21,386 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:21,386 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:21,386 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:21,386 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:21,614 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:21,615 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:21,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:22,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:54:22,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 13:54:22,264 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:22,398 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:54:22,398 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-07 13:54:22,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:54:22,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:54:22,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:54:22,399 INFO L87 Difference]: Start difference. First operand 7768 states and 12426 transitions. Second operand 4 states. [2019-10-07 13:54:22,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:22,878 INFO L93 Difference]: Finished difference Result 15831 states and 26154 transitions. [2019-10-07 13:54:22,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:54:22,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-10-07 13:54:22,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:22,934 INFO L225 Difference]: With dead ends: 15831 [2019-10-07 13:54:22,935 INFO L226 Difference]: Without dead ends: 8114 [2019-10-07 13:54:22,977 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:54:22,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8114 states. [2019-10-07 13:54:23,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8114 to 8055. [2019-10-07 13:54:23,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8055 states. [2019-10-07 13:54:23,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8055 states to 8055 states and 12883 transitions. [2019-10-07 13:54:23,567 INFO L78 Accepts]: Start accepts. Automaton has 8055 states and 12883 transitions. Word has length 151 [2019-10-07 13:54:23,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:23,568 INFO L462 AbstractCegarLoop]: Abstraction has 8055 states and 12883 transitions. [2019-10-07 13:54:23,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:54:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 8055 states and 12883 transitions. [2019-10-07 13:54:23,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-07 13:54:23,573 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:23,573 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:23,781 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:23,781 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:23,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:23,781 INFO L82 PathProgramCache]: Analyzing trace with hash -48170128, now seen corresponding path program 1 times [2019-10-07 13:54:23,782 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:23,782 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:23,782 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:23,782 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:23,953 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:23,953 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:23,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:24,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:54:24,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:54:24,558 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:24,781 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:54:24,781 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 10 [2019-10-07 13:54:24,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:54:24,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:54:24,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:54:24,783 INFO L87 Difference]: Start difference. First operand 8055 states and 12883 transitions. Second operand 5 states. [2019-10-07 13:54:26,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:26,193 INFO L93 Difference]: Finished difference Result 20372 states and 35194 transitions. [2019-10-07 13:54:26,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:54:26,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2019-10-07 13:54:26,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:26,279 INFO L225 Difference]: With dead ends: 20372 [2019-10-07 13:54:26,279 INFO L226 Difference]: Without dead ends: 13633 [2019-10-07 13:54:26,337 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 302 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 13:54:26,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13633 states. [2019-10-07 13:54:27,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13633 to 13139. [2019-10-07 13:54:27,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13139 states. [2019-10-07 13:54:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13139 states to 13139 states and 22354 transitions. [2019-10-07 13:54:27,841 INFO L78 Accepts]: Start accepts. Automaton has 13139 states and 22354 transitions. Word has length 152 [2019-10-07 13:54:27,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:27,842 INFO L462 AbstractCegarLoop]: Abstraction has 13139 states and 22354 transitions. [2019-10-07 13:54:27,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:54:27,842 INFO L276 IsEmpty]: Start isEmpty. Operand 13139 states and 22354 transitions. [2019-10-07 13:54:27,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-07 13:54:27,847 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:27,847 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:28,062 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:28,062 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:28,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:28,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1248583791, now seen corresponding path program 1 times [2019-10-07 13:54:28,063 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:28,063 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:28,064 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:28,064 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:28,222 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:28,222 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:28,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 13:54:28,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 13:54:28,826 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:28,943 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:54:28,943 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2019-10-07 13:54:28,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:54:28,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:54:28,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:54:28,944 INFO L87 Difference]: Start difference. First operand 13139 states and 22354 transitions. Second operand 4 states. [2019-10-07 13:54:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:29,328 INFO L93 Difference]: Finished difference Result 25962 states and 46207 transitions. [2019-10-07 13:54:29,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:54:29,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2019-10-07 13:54:29,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:29,415 INFO L225 Difference]: With dead ends: 25962 [2019-10-07 13:54:29,415 INFO L226 Difference]: Without dead ends: 12874 [2019-10-07 13:54:29,702 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:54:29,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12874 states. [2019-10-07 13:54:30,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12874 to 12468. [2019-10-07 13:54:30,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12468 states. [2019-10-07 13:54:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12468 states to 12468 states and 20690 transitions. [2019-10-07 13:54:30,265 INFO L78 Accepts]: Start accepts. Automaton has 12468 states and 20690 transitions. Word has length 153 [2019-10-07 13:54:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:30,266 INFO L462 AbstractCegarLoop]: Abstraction has 12468 states and 20690 transitions. [2019-10-07 13:54:30,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:54:30,266 INFO L276 IsEmpty]: Start isEmpty. Operand 12468 states and 20690 transitions. [2019-10-07 13:54:30,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-07 13:54:30,272 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:30,272 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:30,479 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:30,480 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:30,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:30,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1622185040, now seen corresponding path program 1 times [2019-10-07 13:54:30,480 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:30,480 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:30,481 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:30,481 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:30,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-07 13:54:30,640 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:30,641 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:30,641 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 13:54:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:31,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:54:31,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 13:54:31,493 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:31,683 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:54:31,683 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 7 [2019-10-07 13:54:31,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:54:31,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:54:31,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:54:31,685 INFO L87 Difference]: Start difference. First operand 12468 states and 20690 transitions. Second operand 4 states. [2019-10-07 13:54:32,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:32,421 INFO L93 Difference]: Finished difference Result 25360 states and 44721 transitions. [2019-10-07 13:54:32,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:54:32,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2019-10-07 13:54:32,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:32,522 INFO L225 Difference]: With dead ends: 25360 [2019-10-07 13:54:32,523 INFO L226 Difference]: Without dead ends: 12943 [2019-10-07 13:54:32,632 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 306 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:54:32,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12943 states. [2019-10-07 13:54:33,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12943 to 12712. [2019-10-07 13:54:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12712 states. [2019-10-07 13:54:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12712 states to 12712 states and 21051 transitions. [2019-10-07 13:54:33,673 INFO L78 Accepts]: Start accepts. Automaton has 12712 states and 21051 transitions. Word has length 155 [2019-10-07 13:54:33,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:33,673 INFO L462 AbstractCegarLoop]: Abstraction has 12712 states and 21051 transitions. [2019-10-07 13:54:33,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:54:33,674 INFO L276 IsEmpty]: Start isEmpty. Operand 12712 states and 21051 transitions. [2019-10-07 13:54:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-07 13:54:33,679 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:33,680 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:33,886 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:33,887 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:33,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:33,887 INFO L82 PathProgramCache]: Analyzing trace with hash 495278751, now seen corresponding path program 1 times [2019-10-07 13:54:33,887 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:33,887 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:33,887 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:33,888 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:34,038 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:34,038 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:34,038 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 13:54:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:34,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 3005 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:54:34,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:54:34,810 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:34,993 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:54:34,993 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 11 [2019-10-07 13:54:34,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:54:34,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:54:34,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 13:54:34,995 INFO L87 Difference]: Start difference. First operand 12712 states and 21051 transitions. Second operand 5 states. [2019-10-07 13:54:36,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:36,804 INFO L93 Difference]: Finished difference Result 29870 states and 52704 transitions. [2019-10-07 13:54:36,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:54:36,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2019-10-07 13:54:36,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:36,937 INFO L225 Difference]: With dead ends: 29870 [2019-10-07 13:54:36,937 INFO L226 Difference]: Without dead ends: 18731 [2019-10-07 13:54:37,242 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 320 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:54:37,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18731 states. [2019-10-07 13:54:37,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18731 to 18282. [2019-10-07 13:54:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18282 states. [2019-10-07 13:54:38,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18282 states to 18282 states and 31900 transitions. [2019-10-07 13:54:38,044 INFO L78 Accepts]: Start accepts. Automaton has 18282 states and 31900 transitions. Word has length 161 [2019-10-07 13:54:38,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:38,045 INFO L462 AbstractCegarLoop]: Abstraction has 18282 states and 31900 transitions. [2019-10-07 13:54:38,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:54:38,045 INFO L276 IsEmpty]: Start isEmpty. Operand 18282 states and 31900 transitions. [2019-10-07 13:54:38,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-07 13:54:38,051 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:38,052 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:38,259 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:38,260 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:38,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:38,260 INFO L82 PathProgramCache]: Analyzing trace with hash -707093437, now seen corresponding path program 1 times [2019-10-07 13:54:38,260 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:38,260 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:38,260 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:38,260 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:38,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:38,402 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:38,402 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:38,402 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 13:54:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:39,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:54:39,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:54:39,063 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:39,246 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:54:39,246 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 10 [2019-10-07 13:54:39,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:54:39,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:54:39,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:54:39,249 INFO L87 Difference]: Start difference. First operand 18282 states and 31900 transitions. Second operand 5 states. [2019-10-07 13:54:42,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:42,068 INFO L93 Difference]: Finished difference Result 41005 states and 75563 transitions. [2019-10-07 13:54:42,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:54:42,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2019-10-07 13:54:42,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:42,206 INFO L225 Difference]: With dead ends: 41005 [2019-10-07 13:54:42,207 INFO L226 Difference]: Without dead ends: 24303 [2019-10-07 13:54:42,298 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 324 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 13:54:42,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24303 states. [2019-10-07 13:54:43,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24303 to 23744. [2019-10-07 13:54:43,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23744 states. [2019-10-07 13:54:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23744 states to 23744 states and 43648 transitions. [2019-10-07 13:54:43,340 INFO L78 Accepts]: Start accepts. Automaton has 23744 states and 43648 transitions. Word has length 163 [2019-10-07 13:54:43,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:43,340 INFO L462 AbstractCegarLoop]: Abstraction has 23744 states and 43648 transitions. [2019-10-07 13:54:43,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:54:43,340 INFO L276 IsEmpty]: Start isEmpty. Operand 23744 states and 43648 transitions. [2019-10-07 13:54:43,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-07 13:54:43,347 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:43,348 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:43,555 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:43,555 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:43,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:43,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1607484116, now seen corresponding path program 1 times [2019-10-07 13:54:43,556 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:43,556 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:43,556 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:43,556 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:43,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:54:43,704 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:43,704 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:43,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:44,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 13:54:44,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:44,669 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:54:44,669 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:44,800 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:54:44,800 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-07 13:54:44,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:54:44,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:54:44,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:54:44,801 INFO L87 Difference]: Start difference. First operand 23744 states and 43648 transitions. Second operand 3 states. [2019-10-07 13:54:46,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:54:46,406 INFO L93 Difference]: Finished difference Result 67761 states and 148953 transitions. [2019-10-07 13:54:46,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:54:46,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2019-10-07 13:54:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:54:46,691 INFO L225 Difference]: With dead ends: 67761 [2019-10-07 13:54:46,692 INFO L226 Difference]: Without dead ends: 44072 [2019-10-07 13:54:46,907 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:54:46,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44072 states. [2019-10-07 13:54:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44072 to 36912. [2019-10-07 13:54:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36912 states. [2019-10-07 13:54:51,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36912 states to 36912 states and 80045 transitions. [2019-10-07 13:54:51,432 INFO L78 Accepts]: Start accepts. Automaton has 36912 states and 80045 transitions. Word has length 164 [2019-10-07 13:54:51,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:54:51,432 INFO L462 AbstractCegarLoop]: Abstraction has 36912 states and 80045 transitions. [2019-10-07 13:54:51,432 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:54:51,432 INFO L276 IsEmpty]: Start isEmpty. Operand 36912 states and 80045 transitions. [2019-10-07 13:54:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-07 13:54:51,438 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:54:51,438 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:54:51,646 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:51,646 INFO L410 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:54:51,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:54:51,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1505509953, now seen corresponding path program 1 times [2019-10-07 13:54:51,647 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:54:51,647 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:51,648 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:51,648 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:54:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:54:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-07 13:54:52,158 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:54:52,158 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:54:52,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:54:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:54:52,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 3005 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:54:52,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:54:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 13:54:52,893 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:54:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 13:54:53,031 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:54:53,059 INFO L162 IcfgInterpreter]: Started Sifa with 138 locations of interest [2019-10-07 13:54:53,060 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:54:53,067 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:54:53,074 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:54:53,075 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:55:39,157 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 754 [2019-10-07 13:55:44,177 WARN L191 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 13:55:44,483 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 840 [2019-10-07 13:55:44,701 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 840 [2019-10-07 13:55:46,495 WARN L191 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 840 [2019-10-07 13:55:47,008 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 13:55:47,550 WARN L191 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 13:55:47,987 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 13:55:48,479 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 13:55:49,349 WARN L191 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 1022 DAG size of output: 1020 [2019-10-07 13:55:49,786 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 13:55:50,279 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 13:55:50,723 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 13:55:51,205 WARN L191 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 13:55:51,700 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 1020 [2019-10-07 13:55:51,717 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 376 for LOIs [2019-10-07 13:55:51,932 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 723 [2019-10-07 13:55:52,050 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 723 [2019-10-07 13:55:52,376 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 903 [2019-10-07 13:55:52,378 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1064 for LOIs [2019-10-07 13:55:52,806 WARN L191 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:55:53,221 WARN L191 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:55:53,333 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:55:54,044 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:55:54,472 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:55:54,906 WARN L191 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:55:55,017 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:55:55,719 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:55:56,173 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:55:56,628 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:55:56,863 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:55:57,697 WARN L191 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:55:58,475 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 1226 DAG size of output: 1064 [2019-10-07 13:55:58,892 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:55:59,026 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:55:59,728 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:00,158 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:00,574 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:00,680 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:01,385 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:01,814 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:02,241 WARN L191 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:02,353 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:03,059 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:03,478 WARN L191 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:03,897 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:04,003 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:04,707 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:05,131 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:05,547 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:05,655 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:06,355 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:06,778 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:07,193 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:07,299 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:08,015 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:08,430 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:08,852 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:08,961 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:09,664 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:10,080 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:10,502 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:10,609 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:11,305 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:11,730 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:12,151 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:12,261 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:12,973 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:13,389 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:13,818 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 13:56:13,927 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:14,646 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:16,181 WARN L191 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:16,884 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:17,010 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:17,714 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:18,980 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:56:19,684 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:19,800 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:20,527 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:21,232 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:21,948 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:22,055 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:22,761 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:24,325 WARN L191 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:25,079 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:25,193 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:56:25,899 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:27,201 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 13:56:27,922 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:28,041 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:56:28,747 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:30,014 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 13:56:30,721 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:30,829 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:56:31,534 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:32,255 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 13:56:32,976 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 13:56:33,141 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:56:33,849 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:34,561 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:35,262 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:35,375 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:56:36,086 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 13:56:36,821 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:37,540 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:37,652 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:56:38,363 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 13:56:39,611 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1232 DAG size of output: 1228 [2019-10-07 13:56:40,328 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:40,450 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:56:41,157 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 13:56:41,862 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:42,571 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:42,680 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:56:43,388 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 13:56:44,702 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:56:45,406 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:45,531 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:46,224 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:47,496 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:56:48,196 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:48,309 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:49,006 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:49,698 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:50,399 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:50,508 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:56:51,223 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:56:52,432 WARN L191 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 13:56:53,140 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 13:56:53,255 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:56:53,972 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:55,171 WARN L191 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 13:56:55,866 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 13:56:55,981 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:56:56,676 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:56:57,382 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 13:56:58,088 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 13:56:58,197 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:56:58,898 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:00,164 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1235 DAG size of output: 1228 [2019-10-07 13:57:00,865 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:00,979 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:57:01,682 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:02,945 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1237 DAG size of output: 1230 [2019-10-07 13:57:03,654 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 13:57:03,769 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:57:04,473 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 13:57:05,768 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:57:06,464 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:06,577 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:57:07,271 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:08,521 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:57:09,226 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:09,338 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:57:10,029 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:10,723 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:11,424 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:11,531 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:57:12,232 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:13,530 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:57:14,227 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:14,341 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:57:15,033 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:16,311 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:57:17,024 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:17,138 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:57:17,834 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:18,540 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:19,256 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:19,363 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:57:20,053 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:21,334 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 13:57:22,040 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:22,154 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:57:22,859 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:24,132 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 13:57:24,839 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:24,953 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:57:25,668 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:26,369 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:27,089 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:27,196 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:57:27,895 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:29,163 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1235 DAG size of output: 1228 [2019-10-07 13:57:29,871 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:29,988 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:57:30,702 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:31,963 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:57:32,654 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:32,768 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:57:33,468 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:34,727 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:57:35,414 WARN L191 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:35,526 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:57:36,215 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:36,923 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:37,633 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:37,739 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:57:38,431 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:39,627 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 13:57:40,327 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 13:57:40,456 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:57:41,156 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:42,340 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 13:57:43,040 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 13:57:43,155 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:57:43,858 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:45,104 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1228 DAG size of output: 1226 [2019-10-07 13:57:45,798 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 13:57:45,905 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:57:46,623 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:47,804 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 1235 DAG size of output: 1228 [2019-10-07 13:57:48,501 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:48,733 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:57:49,500 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:57:50,753 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1237 DAG size of output: 1230 [2019-10-07 13:57:51,453 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 13:57:51,565 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:57:52,260 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 13:57:53,551 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1237 DAG size of output: 1230 [2019-10-07 13:57:54,264 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 13:57:54,376 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:57:55,071 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 13:57:56,337 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1237 DAG size of output: 1230 [2019-10-07 13:57:57,044 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 13:57:57,158 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:57:57,861 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 13:57:59,145 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:57:59,844 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:57:59,955 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:58:00,650 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:01,902 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:58:02,608 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:02,721 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:58:03,419 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:04,122 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:04,824 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:04,930 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:58:05,636 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:06,838 WARN L191 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 13:58:07,543 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 13:58:07,656 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:58:08,361 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:58:09,638 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 13:58:10,343 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:58:10,457 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:58:11,164 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:58:12,362 WARN L191 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1226 [2019-10-07 13:58:13,056 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1226 [2019-10-07 13:58:13,177 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:58:13,871 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:58:15,060 WARN L191 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 1235 DAG size of output: 1228 [2019-10-07 13:58:15,753 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:58:15,880 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:58:16,578 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:58:17,856 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1237 DAG size of output: 1230 [2019-10-07 13:58:18,564 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 13:58:18,677 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:58:19,382 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 13:58:20,651 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:58:21,349 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:21,472 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:58:22,176 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:23,452 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:58:24,160 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:24,273 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:58:24,976 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:26,398 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:58:27,119 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:27,240 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:58:27,945 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:29,190 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1224 [2019-10-07 13:58:29,901 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:30,020 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:58:30,713 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:31,417 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:32,112 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:32,217 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:58:32,912 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:34,193 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 13:58:34,901 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:58:35,014 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:58:35,720 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:58:37,119 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 13:58:37,843 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:58:37,972 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-10-07 13:58:38,685 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 13:58:38,691 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1090 for LOIs [2019-10-07 13:58:39,154 WARN L191 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:58:39,623 WARN L191 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 13:58:39,731 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:58:40,440 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:40,453 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1044 for LOIs [2019-10-07 13:58:40,841 WARN L191 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 13:58:41,230 WARN L191 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 13:58:41,337 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-10-07 13:58:42,049 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1224 [2019-10-07 13:58:42,320 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:58:42,320 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.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 13:58:42,325 INFO L168 Benchmark]: Toolchain (without parser) took 291227.07 ms. Allocated memory was 146.3 MB in the beginning and 3.4 GB in the end (delta: 3.2 GB). Free memory was 100.3 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2019-10-07 13:58:42,326 INFO L168 Benchmark]: CDTParser took 1.29 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-07 13:58:42,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1051.06 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 100.1 MB in the beginning and 146.6 MB in the end (delta: -46.5 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2019-10-07 13:58:42,326 INFO L168 Benchmark]: Boogie Preprocessor took 187.05 ms. Allocated memory is still 204.5 MB. Free memory was 146.6 MB in the beginning and 137.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. [2019-10-07 13:58:42,327 INFO L168 Benchmark]: RCFGBuilder took 5047.47 ms. Allocated memory was 204.5 MB in the beginning and 296.2 MB in the end (delta: 91.8 MB). Free memory was 137.7 MB in the beginning and 216.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 149.8 MB. Max. memory is 7.1 GB. [2019-10-07 13:58:42,327 INFO L168 Benchmark]: TraceAbstraction took 284936.91 ms. Allocated memory was 296.2 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 216.2 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2019-10-07 13:58:42,328 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.29 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1051.06 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 100.1 MB in the beginning and 146.6 MB in the end (delta: -46.5 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 187.05 ms. Allocated memory is still 204.5 MB. Free memory was 146.6 MB in the beginning and 137.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5047.47 ms. Allocated memory was 204.5 MB in the beginning and 296.2 MB in the end (delta: 91.8 MB). Free memory was 137.7 MB in the beginning and 216.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 149.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 284936.91 ms. Allocated memory was 296.2 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 216.2 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.2 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...