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_spec1_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:33,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:33,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:33,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:33,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:33,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:33,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:33,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:33,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:33,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:33,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:33,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:33,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:33,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:33,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:33,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:33,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:33,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:33,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:33,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:33,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:33,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:33,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:33,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:33,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:33,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:33,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:33,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:33,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:33,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:33,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:33,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:33,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:33,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:33,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:33,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:34,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:34,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:34,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:34,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:34,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:34,003 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 [2019-10-13 23:03:34,017 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:34,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:34,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:34,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:34,019 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:34,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:34,020 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:34,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:34,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:34,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:34,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:34,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:34,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:34,021 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:34,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:34,021 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:34,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:34,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:34,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:34,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:34,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:34,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:34,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:34,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:34,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:34,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:34,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:34,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:34,024 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 [2019-10-13 23:03:34,306 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:34,320 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:34,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:34,325 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:34,325 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:34,326 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product32.cil.c [2019-10-13 23:03:34,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310ed5fd2/dca772e62afc43c9bb122e33533754a2/FLAGb6793550c [2019-10-13 23:03:34,995 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:34,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product32.cil.c [2019-10-13 23:03:35,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310ed5fd2/dca772e62afc43c9bb122e33533754a2/FLAGb6793550c [2019-10-13 23:03:35,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310ed5fd2/dca772e62afc43c9bb122e33533754a2 [2019-10-13 23:03:35,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:35,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:35,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:35,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:35,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:35,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:35" (1/1) ... [2019-10-13 23:03:35,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345a22c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:35, skipping insertion in model container [2019-10-13 23:03:35,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:35" (1/1) ... [2019-10-13 23:03:35,262 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:35,346 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:36,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:36,102 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:36,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:36,385 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:36,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:36 WrapperNode [2019-10-13 23:03:36,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:36,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:36,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:36,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:36,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:36" (1/1) ... [2019-10-13 23:03:36,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:36" (1/1) ... [2019-10-13 23:03:36,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:36" (1/1) ... [2019-10-13 23:03:36,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:36" (1/1) ... [2019-10-13 23:03:36,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:36" (1/1) ... [2019-10-13 23:03:36,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:36" (1/1) ... [2019-10-13 23:03:36,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:36" (1/1) ... [2019-10-13 23:03:36,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:36,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:36,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:36,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:36,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:36" (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 [2019-10-13 23:03:36,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:36,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:36,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:36,727 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:36,727 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:36,728 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:36,729 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:36,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:36,730 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:36,730 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:36,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:36,732 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:03:36,732 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:36,732 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:03:36,733 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:03:36,733 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:36,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:36,736 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:36,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:36,736 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:36,737 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:36,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:36,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:36,738 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:36,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:36,738 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:03:36,738 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:03:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:03:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:03:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:36,740 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:36,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:36,740 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 23:03:36,741 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:36,741 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 23:03:36,741 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:36,741 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:36,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:03:36,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:03:36,742 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:36,742 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:36,742 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:36,743 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:36,743 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:36,743 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:36,743 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:36,744 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:36,744 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:36,744 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:36,744 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:36,745 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:36,745 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:36,745 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:36,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:36,746 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:36,746 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:36,746 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:36,747 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:36,747 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:36,747 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:36,752 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:36,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:36,752 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:36,753 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:36,757 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:36,757 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:36,757 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:36,757 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:36,757 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:36,757 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:36,757 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:36,758 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:36,758 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:03:36,758 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:03:36,758 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:03:36,759 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:03:36,759 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:03:36,759 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:36,759 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:36,759 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:03:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:03:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:03:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:03:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:36,763 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 23:03:36,763 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 23:03:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:36,769 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:36,770 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:36,776 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:36,776 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:36,776 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:36,777 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:36,777 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:36,777 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:36,777 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:36,778 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:36,779 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:36,779 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:36,779 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:36,779 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:36,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:36,779 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:36,779 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:36,782 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:36,782 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:36,782 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:36,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:36,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:36,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:42,152 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:42,152 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:42,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:42 BoogieIcfgContainer [2019-10-13 23:03:42,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:42,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:42,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:42,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:42,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:35" (1/3) ... [2019-10-13 23:03:42,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d7b39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:42, skipping insertion in model container [2019-10-13 23:03:42,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:36" (2/3) ... [2019-10-13 23:03:42,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d7b39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:42, skipping insertion in model container [2019-10-13 23:03:42,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:42" (3/3) ... [2019-10-13 23:03:42,165 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product32.cil.c [2019-10-13 23:03:42,175 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:42,186 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:42,199 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:42,246 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:42,247 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:42,247 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:42,247 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:42,247 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:42,247 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:42,247 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:42,247 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states. [2019-10-13 23:03:42,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 23:03:42,305 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:42,307 INFO L380 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] [2019-10-13 23:03:42,310 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:42,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:42,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1630587040, now seen corresponding path program 1 times [2019-10-13 23:03:42,324 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:42,324 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090446183] [2019-10-13 23:03:42,324 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:42,325 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:42,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:43,157 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090446183] [2019-10-13 23:03:43,158 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:43,158 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:03:43,159 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20285481] [2019-10-13 23:03:43,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:03:43,164 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:43,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:03:43,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:03:43,182 INFO L87 Difference]: Start difference. First operand 617 states. Second operand 6 states. [2019-10-13 23:03:46,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:46,910 INFO L93 Difference]: Finished difference Result 1481 states and 2263 transitions. [2019-10-13 23:03:46,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:03:46,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-10-13 23:03:46,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:46,945 INFO L225 Difference]: With dead ends: 1481 [2019-10-13 23:03:46,946 INFO L226 Difference]: Without dead ends: 1023 [2019-10-13 23:03:46,957 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:46,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2019-10-13 23:03:47,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 932. [2019-10-13 23:03:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2019-10-13 23:03:47,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1417 transitions. [2019-10-13 23:03:47,173 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1417 transitions. Word has length 97 [2019-10-13 23:03:47,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:47,174 INFO L462 AbstractCegarLoop]: Abstraction has 932 states and 1417 transitions. [2019-10-13 23:03:47,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:03:47,175 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1417 transitions. [2019-10-13 23:03:47,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 23:03:47,186 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:47,186 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:03:47,186 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:47,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:47,187 INFO L82 PathProgramCache]: Analyzing trace with hash 699214467, now seen corresponding path program 1 times [2019-10-13 23:03:47,187 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:47,187 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925462716] [2019-10-13 23:03:47,188 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:47,188 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:47,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:47,574 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:03:47,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925462716] [2019-10-13 23:03:47,575 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:47,575 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:47,575 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977013762] [2019-10-13 23:03:47,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:47,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:47,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:47,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:47,579 INFO L87 Difference]: Start difference. First operand 932 states and 1417 transitions. Second operand 7 states. [2019-10-13 23:03:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:51,359 INFO L93 Difference]: Finished difference Result 2718 states and 4199 transitions. [2019-10-13 23:03:51,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:03:51,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2019-10-13 23:03:51,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:51,389 INFO L225 Difference]: With dead ends: 2718 [2019-10-13 23:03:51,389 INFO L226 Difference]: Without dead ends: 1840 [2019-10-13 23:03:51,397 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:03:51,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2019-10-13 23:03:51,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1803. [2019-10-13 23:03:51,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1803 states. [2019-10-13 23:03:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2777 transitions. [2019-10-13 23:03:51,619 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2777 transitions. Word has length 146 [2019-10-13 23:03:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:51,620 INFO L462 AbstractCegarLoop]: Abstraction has 1803 states and 2777 transitions. [2019-10-13 23:03:51,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:51,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2777 transitions. [2019-10-13 23:03:51,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 23:03:51,634 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:51,634 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:03:51,635 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:51,635 INFO L82 PathProgramCache]: Analyzing trace with hash 247221830, now seen corresponding path program 1 times [2019-10-13 23:03:51,635 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:51,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380986028] [2019-10-13 23:03:51,636 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:51,636 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:51,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:03:52,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380986028] [2019-10-13 23:03:52,099 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:52,099 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:03:52,099 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367729590] [2019-10-13 23:03:52,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:03:52,104 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:52,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:03:52,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:03:52,104 INFO L87 Difference]: Start difference. First operand 1803 states and 2777 transitions. Second operand 12 states. [2019-10-13 23:04:00,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:00,324 INFO L93 Difference]: Finished difference Result 4588 states and 7042 transitions. [2019-10-13 23:04:00,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 23:04:00,325 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2019-10-13 23:04:00,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:00,348 INFO L225 Difference]: With dead ends: 4588 [2019-10-13 23:04:00,348 INFO L226 Difference]: Without dead ends: 2838 [2019-10-13 23:04:00,359 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-13 23:04:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2019-10-13 23:04:00,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 2789. [2019-10-13 23:04:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2789 states. [2019-10-13 23:04:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 4242 transitions. [2019-10-13 23:04:00,593 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 4242 transitions. Word has length 149 [2019-10-13 23:04:00,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:00,595 INFO L462 AbstractCegarLoop]: Abstraction has 2789 states and 4242 transitions. [2019-10-13 23:04:00,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:04:00,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 4242 transitions. [2019-10-13 23:04:00,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 23:04:00,600 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:00,601 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:04:00,601 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:00,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:00,602 INFO L82 PathProgramCache]: Analyzing trace with hash 2003943514, now seen corresponding path program 1 times [2019-10-13 23:04:00,602 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:00,602 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156545592] [2019-10-13 23:04:00,603 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:00,603 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:00,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:04:00,891 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156545592] [2019-10-13 23:04:00,892 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:00,892 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:04:00,892 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034185381] [2019-10-13 23:04:00,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:04:00,894 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:00,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:04:00,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:04:00,895 INFO L87 Difference]: Start difference. First operand 2789 states and 4242 transitions. Second operand 6 states. [2019-10-13 23:04:01,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:01,570 INFO L93 Difference]: Finished difference Result 2841 states and 4324 transitions. [2019-10-13 23:04:01,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:01,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2019-10-13 23:04:01,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:01,591 INFO L225 Difference]: With dead ends: 2841 [2019-10-13 23:04:01,592 INFO L226 Difference]: Without dead ends: 2824 [2019-10-13 23:04:01,595 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:04:01,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2019-10-13 23:04:01,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2795. [2019-10-13 23:04:01,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2019-10-13 23:04:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 4248 transitions. [2019-10-13 23:04:01,764 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 4248 transitions. Word has length 150 [2019-10-13 23:04:01,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:01,766 INFO L462 AbstractCegarLoop]: Abstraction has 2795 states and 4248 transitions. [2019-10-13 23:04:01,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:04:01,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 4248 transitions. [2019-10-13 23:04:01,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 23:04:01,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:01,772 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:04:01,772 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:01,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:01,772 INFO L82 PathProgramCache]: Analyzing trace with hash -681305135, now seen corresponding path program 1 times [2019-10-13 23:04:01,773 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:01,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495714410] [2019-10-13 23:04:01,773 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:01,774 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:01,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:04:02,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495714410] [2019-10-13 23:04:02,037 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:02,037 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:04:02,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983233145] [2019-10-13 23:04:02,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:04:02,038 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:02,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:04:02,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:02,039 INFO L87 Difference]: Start difference. First operand 2795 states and 4248 transitions. Second operand 9 states. [2019-10-13 23:04:02,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:02,971 INFO L93 Difference]: Finished difference Result 2966 states and 4480 transitions. [2019-10-13 23:04:02,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:04:02,971 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 155 [2019-10-13 23:04:02,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:02,990 INFO L225 Difference]: With dead ends: 2966 [2019-10-13 23:04:02,990 INFO L226 Difference]: Without dead ends: 2949 [2019-10-13 23:04:02,993 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:04:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2019-10-13 23:04:03,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 2887. [2019-10-13 23:04:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2887 states. [2019-10-13 23:04:03,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 4372 transitions. [2019-10-13 23:04:03,183 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 4372 transitions. Word has length 155 [2019-10-13 23:04:03,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:03,188 INFO L462 AbstractCegarLoop]: Abstraction has 2887 states and 4372 transitions. [2019-10-13 23:04:03,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:04:03,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 4372 transitions. [2019-10-13 23:04:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 23:04:03,200 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:03,200 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:03,201 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:03,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:03,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1690517356, now seen corresponding path program 1 times [2019-10-13 23:04:03,202 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:03,202 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367136617] [2019-10-13 23:04:03,202 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:03,203 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:03,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:04,309 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:04:04,309 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367136617] [2019-10-13 23:04:04,310 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638629733] [2019-10-13 23:04:04,310 INFO L94 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 [2019-10-13 23:04:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:05,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 3559 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 23:04:05,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:04:05,165 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:04:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 23:04:05,314 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:04:05,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:04:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 23:04:06,005 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:04:06,005 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [32] total 37 [2019-10-13 23:04:06,005 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993942391] [2019-10-13 23:04:06,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:06,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:06,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:06,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 23:04:06,008 INFO L87 Difference]: Start difference. First operand 2887 states and 4372 transitions. Second operand 7 states. [2019-10-13 23:04:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:06,195 INFO L93 Difference]: Finished difference Result 2978 states and 4484 transitions. [2019-10-13 23:04:06,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:04:06,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2019-10-13 23:04:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:06,221 INFO L225 Difference]: With dead ends: 2978 [2019-10-13 23:04:06,222 INFO L226 Difference]: Without dead ends: 2961 [2019-10-13 23:04:06,225 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 352 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 23:04:06,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2019-10-13 23:04:06,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2941. [2019-10-13 23:04:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2941 states. [2019-10-13 23:04:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 4426 transitions. [2019-10-13 23:04:06,435 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 4426 transitions. Word has length 170 [2019-10-13 23:04:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:06,438 INFO L462 AbstractCegarLoop]: Abstraction has 2941 states and 4426 transitions. [2019-10-13 23:04:06,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 4426 transitions. [2019-10-13 23:04:06,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-13 23:04:06,448 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:06,449 INFO L380 BasicCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]