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_spec14_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:06:27,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:06:27,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:06:27,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:06:27,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:06:27,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:06:27,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:06:27,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:06:27,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:06:27,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:06:27,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:06:27,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:06:27,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:06:27,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:06:27,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:06:27,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:06:27,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:06:27,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:06:27,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:06:27,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:06:27,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:06:27,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:06:27,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:06:27,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:06:27,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:06:27,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:06:27,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:06:27,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:06:27,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:06:27,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:06:27,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:06:27,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:06:27,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:06:27,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:06:27,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:06:27,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:06:27,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:06:27,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:06:27,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:06:27,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:06:27,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:06:27,964 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 [2019-10-15 03:06:27,994 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:06:27,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:06:28,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:06:28,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:06:28,001 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:06:28,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:06:28,002 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:06:28,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:06:28,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:06:28,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:06:28,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:06:28,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:06:28,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:06:28,005 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:06:28,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:06:28,005 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:06:28,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:06:28,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:06:28,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:06:28,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:06:28,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:06:28,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:06:28,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:06:28,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:06:28,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:06:28,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:06:28,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:06:28,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:06:28,015 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 [2019-10-15 03:06:28,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:06:28,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:06:28,335 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:06:28,336 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:06:28,337 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:06:28,338 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product28.cil.c [2019-10-15 03:06:28,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a9b4c95a/dd9847b6de304a6eb1158ad3100187a0/FLAG79d7c0250 [2019-10-15 03:06:29,156 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:06:29,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product28.cil.c [2019-10-15 03:06:29,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a9b4c95a/dd9847b6de304a6eb1158ad3100187a0/FLAG79d7c0250 [2019-10-15 03:06:29,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a9b4c95a/dd9847b6de304a6eb1158ad3100187a0 [2019-10-15 03:06:29,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:06:29,408 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:06:29,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:29,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:06:29,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:06:29,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:29,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2e9cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29, skipping insertion in model container [2019-10-15 03:06:29,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:29,427 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:06:29,519 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:06:30,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:30,400 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:06:30,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:30,625 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:06:30,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30 WrapperNode [2019-10-15 03:06:30,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:30,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:06:30,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:06:30,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:06:30,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:06:30,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:06:30,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:06:30,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:06:30,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (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 [2019-10-15 03:06:31,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:06:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:06:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:06:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:06:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:06:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:06:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:06:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:06:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:06:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:06:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:06:31,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:06:31,100 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:06:31,100 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:06:31,100 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:06:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:06:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:06:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:06:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:06:31,102 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:06:31,102 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:06:31,102 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:06:31,102 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:06:31,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:06:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:06:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:06:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:06:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:06:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:06:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:06:31,104 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:06:31,104 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:31,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:06:31,104 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:06:31,104 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 03:06:31,105 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:06:31,105 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 03:06:31,105 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:06:31,105 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:06:31,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:06:31,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:06:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:06:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:06:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:06:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:06:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:06:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:06:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:06:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:06:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:06:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:06:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:06:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:06:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:06:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:06:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:06:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:06:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:06:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:06:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:06:31,110 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:06:31,110 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:06:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:06:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:06:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:06:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:06:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:06:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:06:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:06:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:06:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:06:31,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:06:31,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:06:31,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:06:31,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:06:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:06:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:06:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:06:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:06:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:06:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:06:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:06:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:06:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:06:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:06:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:06:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:06:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:06:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:06:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:06:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:06:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:06:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:06:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:06:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:06:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:06:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:06:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:06:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:06:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:06:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:06:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:06:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:06:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:06:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:06:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:06:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:06:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:06:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:06:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:06:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:06:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:06:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:06:31,126 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:06:31,129 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:06:31,130 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:06:31,130 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:31,130 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:06:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:06:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 03:06:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 03:06:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:06:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:06:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:06:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:06:31,133 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:06:31,133 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:06:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:06:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:06:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:06:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:06:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:06:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:06:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:06:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:06:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:06:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:06:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:06:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:06:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:06:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:06:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:06:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:06:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:06:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:06:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:06:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:06:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:06:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:06:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:06:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:06:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:06:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:06:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:06:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:06:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:06:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:06:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:06:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:06:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:06:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:06:37,169 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:06:37,170 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:06:37,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:37 BoogieIcfgContainer [2019-10-15 03:06:37,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:06:37,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:06:37,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:06:37,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:06:37,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:06:29" (1/3) ... [2019-10-15 03:06:37,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409269d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:37, skipping insertion in model container [2019-10-15 03:06:37,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30" (2/3) ... [2019-10-15 03:06:37,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409269d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:37, skipping insertion in model container [2019-10-15 03:06:37,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:37" (3/3) ... [2019-10-15 03:06:37,180 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product28.cil.c [2019-10-15 03:06:37,191 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:06:37,205 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:06:37,219 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:06:37,268 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:06:37,268 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:06:37,269 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:06:37,269 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:06:37,269 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:06:37,269 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:06:37,269 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:06:37,269 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:06:37,303 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states. [2019-10-15 03:06:37,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-15 03:06:37,315 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:37,316 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:37,318 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:37,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:37,325 INFO L82 PathProgramCache]: Analyzing trace with hash -934132718, now seen corresponding path program 1 times [2019-10-15 03:06:37,336 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:37,336 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029164934] [2019-10-15 03:06:37,336 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:37,336 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:37,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:06:38,035 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029164934] [2019-10-15 03:06:38,036 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:38,036 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:06:38,037 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357971642] [2019-10-15 03:06:38,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:06:38,044 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:38,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:06:38,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:06:38,063 INFO L87 Difference]: Start difference. First operand 562 states. Second operand 3 states. [2019-10-15 03:06:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:38,437 INFO L93 Difference]: Finished difference Result 1263 states and 1903 transitions. [2019-10-15 03:06:38,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:06:38,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2019-10-15 03:06:38,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:38,473 INFO L225 Difference]: With dead ends: 1263 [2019-10-15 03:06:38,473 INFO L226 Difference]: Without dead ends: 829 [2019-10-15 03:06:38,484 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:06:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2019-10-15 03:06:38,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 784. [2019-10-15 03:06:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2019-10-15 03:06:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1177 transitions. [2019-10-15 03:06:38,780 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1177 transitions. Word has length 72 [2019-10-15 03:06:38,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:38,781 INFO L462 AbstractCegarLoop]: Abstraction has 784 states and 1177 transitions. [2019-10-15 03:06:38,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:06:38,781 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1177 transitions. [2019-10-15 03:06:38,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:06:38,795 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:38,795 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:38,796 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:38,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:38,796 INFO L82 PathProgramCache]: Analyzing trace with hash -345207699, now seen corresponding path program 1 times [2019-10-15 03:06:38,797 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:38,797 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677414777] [2019-10-15 03:06:38,797 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:38,797 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:38,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:39,207 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:06:39,207 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677414777] [2019-10-15 03:06:39,208 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130389910] [2019-10-15 03:06:39,208 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 [2019-10-15 03:06:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:39,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 2827 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-15 03:06:39,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:40,168 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:06:40,170 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:06:40,599 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:40,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 6] total 15 [2019-10-15 03:06:40,599 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549967438] [2019-10-15 03:06:40,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:06:40,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:40,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:06:40,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:06:40,603 INFO L87 Difference]: Start difference. First operand 784 states and 1177 transitions. Second operand 6 states. [2019-10-15 03:06:41,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:41,430 INFO L93 Difference]: Finished difference Result 1800 states and 2680 transitions. [2019-10-15 03:06:41,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:06:41,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2019-10-15 03:06:41,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:41,506 INFO L225 Difference]: With dead ends: 1800 [2019-10-15 03:06:41,506 INFO L226 Difference]: Without dead ends: 1046 [2019-10-15 03:06:41,511 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 230 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:06:41,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2019-10-15 03:06:41,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1039. [2019-10-15 03:06:41,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2019-10-15 03:06:41,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1513 transitions. [2019-10-15 03:06:41,586 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1513 transitions. Word has length 119 [2019-10-15 03:06:41,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:41,587 INFO L462 AbstractCegarLoop]: Abstraction has 1039 states and 1513 transitions. [2019-10-15 03:06:41,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:06:41,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1513 transitions. [2019-10-15 03:06:41,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:06:41,593 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:41,594 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:41,802 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:41,802 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:41,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:41,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1094701558, now seen corresponding path program 1 times [2019-10-15 03:06:41,803 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:41,804 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095942684] [2019-10-15 03:06:41,804 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:41,804 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:41,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 03:06:42,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095942684] [2019-10-15 03:06:42,180 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:42,180 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:42,180 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77458264] [2019-10-15 03:06:42,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:42,182 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:42,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:42,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:42,183 INFO L87 Difference]: Start difference. First operand 1039 states and 1513 transitions. Second operand 7 states. [2019-10-15 03:06:47,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:47,550 INFO L93 Difference]: Finished difference Result 2914 states and 4320 transitions. [2019-10-15 03:06:47,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:06:47,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-10-15 03:06:47,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:47,568 INFO L225 Difference]: With dead ends: 2914 [2019-10-15 03:06:47,568 INFO L226 Difference]: Without dead ends: 1907 [2019-10-15 03:06:47,574 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:06:47,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2019-10-15 03:06:47,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1812. [2019-10-15 03:06:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1812 states. [2019-10-15 03:06:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2682 transitions. [2019-10-15 03:06:47,692 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2682 transitions. Word has length 120 [2019-10-15 03:06:47,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:47,693 INFO L462 AbstractCegarLoop]: Abstraction has 1812 states and 2682 transitions. [2019-10-15 03:06:47,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:47,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2682 transitions. [2019-10-15 03:06:47,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 03:06:47,696 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:47,696 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:47,697 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:47,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:47,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1024517782, now seen corresponding path program 1 times [2019-10-15 03:06:47,698 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:47,698 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262734013] [2019-10-15 03:06:47,698 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:47,698 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:47,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:06:48,068 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262734013] [2019-10-15 03:06:48,071 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:48,071 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:06:48,072 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922024532] [2019-10-15 03:06:48,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:06:48,075 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:48,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:06:48,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:06:48,076 INFO L87 Difference]: Start difference. First operand 1812 states and 2682 transitions. Second operand 9 states. [2019-10-15 03:06:52,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:52,803 INFO L93 Difference]: Finished difference Result 1991 states and 2964 transitions. [2019-10-15 03:06:52,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:06:52,803 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2019-10-15 03:06:52,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:52,819 INFO L225 Difference]: With dead ends: 1991 [2019-10-15 03:06:52,819 INFO L226 Difference]: Without dead ends: 1988 [2019-10-15 03:06:52,822 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:06:52,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2019-10-15 03:06:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1908. [2019-10-15 03:06:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1908 states. [2019-10-15 03:06:52,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2841 transitions. [2019-10-15 03:06:52,923 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2841 transitions. Word has length 124 [2019-10-15 03:06:52,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:52,925 INFO L462 AbstractCegarLoop]: Abstraction has 1908 states and 2841 transitions. [2019-10-15 03:06:52,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:06:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2841 transitions. [2019-10-15 03:06:52,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-15 03:06:52,935 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:52,935 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-10-15 03:06:52,935 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:52,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:52,936 INFO L82 PathProgramCache]: Analyzing trace with hash 167613539, now seen corresponding path program 1 times [2019-10-15 03:06:52,936 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:52,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308824609] [2019-10-15 03:06:52,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:52,937 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:52,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-10-15 03:06:53,125 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308824609] [2019-10-15 03:06:53,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:53,126 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:06:53,126 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828554607] [2019-10-15 03:06:53,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:53,128 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:53,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:53,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:53,129 INFO L87 Difference]: Start difference. First operand 1908 states and 2841 transitions. Second operand 5 states. [2019-10-15 03:06:53,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:53,245 INFO L93 Difference]: Finished difference Result 3809 states and 5719 transitions. [2019-10-15 03:06:53,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:53,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2019-10-15 03:06:53,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:53,261 INFO L225 Difference]: With dead ends: 3809 [2019-10-15 03:06:53,261 INFO L226 Difference]: Without dead ends: 1932 [2019-10-15 03:06:53,272 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:53,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2019-10-15 03:06:53,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1932. [2019-10-15 03:06:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1932 states. [2019-10-15 03:06:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2865 transitions. [2019-10-15 03:06:53,372 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2865 transitions. Word has length 160 [2019-10-15 03:06:53,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:53,374 INFO L462 AbstractCegarLoop]: Abstraction has 1932 states and 2865 transitions. [2019-10-15 03:06:53,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:53,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2865 transitions. [2019-10-15 03:06:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-15 03:06:53,381 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:53,381 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 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] [2019-10-15 03:06:53,382 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:53,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:53,382 INFO L82 PathProgramCache]: Analyzing trace with hash -870188209, now seen corresponding path program 1 times [2019-10-15 03:06:53,382 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:53,382 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058904384] [2019-10-15 03:06:53,383 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:53,383 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:53,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-15 03:06:53,629 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058904384] [2019-10-15 03:06:53,629 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963660408] [2019-10-15 03:06:53,629 INFO L94 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 [2019-10-15 03:06:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:54,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 3174 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:54,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 03:06:54,609 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-15 03:06:55,143 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:55,143 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 03:06:55,143 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167491334] [2019-10-15 03:06:55,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:55,144 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:55,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:55,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:06:55,145 INFO L87 Difference]: Start difference. First operand 1932 states and 2865 transitions. Second operand 4 states. [2019-10-15 03:06:55,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:55,572 INFO L93 Difference]: Finished difference Result 3989 states and 6058 transitions. [2019-10-15 03:06:55,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:55,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2019-10-15 03:06:55,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:55,601 INFO L225 Difference]: With dead ends: 3989 [2019-10-15 03:06:55,601 INFO L226 Difference]: Without dead ends: 2088 [2019-10-15 03:06:55,616 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 329 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:06:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2019-10-15 03:06:55,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 2088. [2019-10-15 03:06:55,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2088 states. [2019-10-15 03:06:55,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 3157 transitions. [2019-10-15 03:06:55,788 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 3157 transitions. Word has length 165 [2019-10-15 03:06:55,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:55,788 INFO L462 AbstractCegarLoop]: Abstraction has 2088 states and 3157 transitions. [2019-10-15 03:06:55,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:55,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 3157 transitions. [2019-10-15 03:06:55,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 03:06:55,798 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:55,798 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 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] [2019-10-15 03:06:56,022 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:56,023 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:56,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:56,024 INFO L82 PathProgramCache]: Analyzing trace with hash -497006630, now seen corresponding path program 1 times [2019-10-15 03:06:56,024 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:56,024 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521843604] [2019-10-15 03:06:56,025 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:56,025 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:56,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 03:06:56,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521843604] [2019-10-15 03:06:56,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076401784] [2019-10-15 03:06:56,285 INFO L94 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 [2019-10-15 03:06:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:57,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:57,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 03:06:57,172 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 03:06:57,470 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:57,471 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:57,471 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467821363] [2019-10-15 03:06:57,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:57,472 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:57,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:57,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:57,472 INFO L87 Difference]: Start difference. First operand 2088 states and 3157 transitions. Second operand 4 states. [2019-10-15 03:06:57,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:57,800 INFO L93 Difference]: Finished difference Result 4301 states and 6638 transitions. [2019-10-15 03:06:57,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:57,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-10-15 03:06:57,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:57,815 INFO L225 Difference]: With dead ends: 4301 [2019-10-15 03:06:57,815 INFO L226 Difference]: Without dead ends: 2244 [2019-10-15 03:06:57,826 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 337 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:57,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2019-10-15 03:06:57,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 2244. [2019-10-15 03:06:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2244 states. [2019-10-15 03:06:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3449 transitions. [2019-10-15 03:06:57,938 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3449 transitions. Word has length 170 [2019-10-15 03:06:57,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:57,939 INFO L462 AbstractCegarLoop]: Abstraction has 2244 states and 3449 transitions. [2019-10-15 03:06:57,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:57,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3449 transitions. [2019-10-15 03:06:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-15 03:06:57,948 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:57,948 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 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] [2019-10-15 03:06:58,158 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:58,159 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:58,159 INFO L82 PathProgramCache]: Analyzing trace with hash 465241290, now seen corresponding path program 1 times [2019-10-15 03:06:58,160 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:58,160 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074040308] [2019-10-15 03:06:58,160 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:58,160 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:58,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-15 03:06:58,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074040308] [2019-10-15 03:06:58,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73569689] [2019-10-15 03:06:58,323 INFO L94 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 [2019-10-15 03:06:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:59,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:59,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 03:06:59,106 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-15 03:06:59,513 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:59,513 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:59,514 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179712633] [2019-10-15 03:06:59,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:59,514 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:59,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:59,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:59,515 INFO L87 Difference]: Start difference. First operand 2244 states and 3449 transitions. Second operand 4 states. [2019-10-15 03:06:59,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:59,853 INFO L93 Difference]: Finished difference Result 4613 states and 7218 transitions. [2019-10-15 03:06:59,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:59,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2019-10-15 03:06:59,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:59,871 INFO L225 Difference]: With dead ends: 4613 [2019-10-15 03:06:59,871 INFO L226 Difference]: Without dead ends: 2400 [2019-10-15 03:06:59,882 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:59,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2019-10-15 03:06:59,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2400. [2019-10-15 03:06:59,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2400 states. [2019-10-15 03:06:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 3741 transitions. [2019-10-15 03:06:59,988 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 3741 transitions. Word has length 174 [2019-10-15 03:06:59,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:59,989 INFO L462 AbstractCegarLoop]: Abstraction has 2400 states and 3741 transitions. [2019-10-15 03:06:59,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:59,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 3741 transitions. [2019-10-15 03:06:59,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-15 03:06:59,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:59,996 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 3, 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] [2019-10-15 03:07:00,205 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:07:00,206 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:00,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:00,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1260916497, now seen corresponding path program 1 times [2019-10-15 03:07:00,206 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:00,207 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701904482] [2019-10-15 03:07:00,207 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:00,207 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:00,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-15 03:07:00,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701904482] [2019-10-15 03:07:00,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043127490] [2019-10-15 03:07:00,403 INFO L94 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 [2019-10-15 03:07:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:01,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:07:01,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:07:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 03:07:01,453 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:07:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-15 03:07:01,941 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:07:01,941 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:07:01,941 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039616810] [2019-10-15 03:07:01,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:07:01,942 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:01,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:07:01,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:01,942 INFO L87 Difference]: Start difference. First operand 2400 states and 3741 transitions. Second operand 4 states. [2019-10-15 03:07:02,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:02,255 INFO L93 Difference]: Finished difference Result 4925 states and 7798 transitions. [2019-10-15 03:07:02,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:07:02,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-15 03:07:02,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:02,277 INFO L225 Difference]: With dead ends: 4925 [2019-10-15 03:07:02,278 INFO L226 Difference]: Without dead ends: 2556 [2019-10-15 03:07:02,289 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 351 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:02,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2019-10-15 03:07:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2556. [2019-10-15 03:07:02,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2556 states. [2019-10-15 03:07:02,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2556 states to 2556 states and 4033 transitions. [2019-10-15 03:07:02,411 INFO L78 Accepts]: Start accepts. Automaton has 2556 states and 4033 transitions. Word has length 177 [2019-10-15 03:07:02,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:02,413 INFO L462 AbstractCegarLoop]: Abstraction has 2556 states and 4033 transitions. [2019-10-15 03:07:02,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:07:02,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2556 states and 4033 transitions. [2019-10-15 03:07:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 03:07:02,421 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:02,421 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 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] [2019-10-15 03:07:02,636 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:07:02,637 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:02,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:02,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1203811773, now seen corresponding path program 1 times [2019-10-15 03:07:02,637 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:02,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264231861] [2019-10-15 03:07:02,638 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:02,638 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:02,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-15 03:07:03,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264231861] [2019-10-15 03:07:03,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021901185] [2019-10-15 03:07:03,082 INFO L94 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 [2019-10-15 03:07:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:03,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 3182 conjuncts, 35 conjunts are in the unsatisfiable core [2019-10-15 03:07:03,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:07:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-15 03:07:03,965 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:07:04,283 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:07:04,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:07:04,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:07:04,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:07:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-15 03:07:04,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1166630741] [2019-10-15 03:07:04,563 INFO L162 IcfgInterpreter]: Started Sifa with 139 locations of interest [2019-10-15 03:07:04,563 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:07:04,570 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:07:04,578 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:07:04,579 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs