/usr/bin/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec9_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:44:51,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:44:51,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:44:51,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:44:51,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:44:51,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:44:51,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:44:51,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:44:51,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:44:51,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:44:51,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:44:51,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:44:51,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:44:51,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:44:51,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:44:51,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:44:51,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:44:51,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:44:51,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:44:51,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:44:51,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:44:51,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:44:51,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:44:51,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:44:51,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:44:51,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:44:51,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:44:51,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:44:51,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:44:51,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:44:51,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:44:51,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:44:51,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:44:51,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:44:51,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:44:51,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:44:51,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:44:51,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:44:51,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:44:51,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:44:51,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:44:51,454 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 [2019-11-07 00:44:51,476 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:44:51,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:44:51,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:44:51,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:44:51,478 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:44:51,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:44:51,479 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:44:51,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:44:51,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:44:51,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:44:51,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:44:51,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:44:51,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:44:51,481 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:44:51,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:44:51,482 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:44:51,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:44:51,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:44:51,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:44:51,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:44:51,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:44:51,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:44:51,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:44:51,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:44:51,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:44:51,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:44:51,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:44:51,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:44:51,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:44:51,769 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:44:51,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:44:51,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:44:51,794 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:44:51,795 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:44:51,796 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product26.cil.c [2019-11-07 00:44:51,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6e725123/dd0ef0e97f5e4dc58db938d1002d3165/FLAG8438b05af [2019-11-07 00:44:52,515 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:44:52,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product26.cil.c [2019-11-07 00:44:52,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6e725123/dd0ef0e97f5e4dc58db938d1002d3165/FLAG8438b05af [2019-11-07 00:44:52,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6e725123/dd0ef0e97f5e4dc58db938d1002d3165 [2019-11-07 00:44:52,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:44:52,703 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:44:52,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:44:52,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:44:52,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:44:52,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:52" (1/1) ... [2019-11-07 00:44:52,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@765fe0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:52, skipping insertion in model container [2019-11-07 00:44:52,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:52" (1/1) ... [2019-11-07 00:44:52,720 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:44:52,812 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:44:53,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:44:53,482 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:44:53,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:44:53,705 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:44:53,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:53 WrapperNode [2019-11-07 00:44:53,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:44:53,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:44:53,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:44:53,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:44:53,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:53" (1/1) ... [2019-11-07 00:44:53,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:53" (1/1) ... [2019-11-07 00:44:53,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:53" (1/1) ... [2019-11-07 00:44:53,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:53" (1/1) ... [2019-11-07 00:44:53,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:53" (1/1) ... [2019-11-07 00:44:53,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:53" (1/1) ... [2019-11-07 00:44:53,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:53" (1/1) ... [2019-11-07 00:44:53,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:44:53,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:44:53,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:44:53,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:44:53,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:53" (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 [2019-11-07 00:44:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:44:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:44:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:44:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:44:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:44:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:44:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:44:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:44:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:44:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:44:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-11-07 00:44:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-11-07 00:44:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-11-07 00:44:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-11-07 00:44:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:44:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:44:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:44:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 00:44:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:44:53,976 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 00:44:53,976 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 00:44:53,976 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:44:53,976 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:44:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:44:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:44:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:44:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:44:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:44:53,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:44:53,978 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:44:53,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:44:53,978 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:44:53,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:44:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:44:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:44:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:44:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:44:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2019-11-07 00:44:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:44:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__empty [2019-11-07 00:44:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:44:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:44:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:44:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:44:53,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:44:53,981 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:44:53,981 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:44:53,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:44:53,981 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:44:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:44:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:44:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:44:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:44:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:44:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:44:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:44:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:44:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:44:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:44:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:44:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:44:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:44:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:44:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:44:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:44:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:44:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:44:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:44:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:44:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:44:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:44:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:44:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:44:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:44:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:44:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:44:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:44:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:44:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:44:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:44:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:44:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:44:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:44:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:44:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:44:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:44:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:44:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:44:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:44:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:44:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:44:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:44:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:44:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:44:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:44:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:44:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:44:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:44:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:44:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:44:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:44:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:44:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:44:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-11-07 00:44:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-11-07 00:44:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-11-07 00:44:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-11-07 00:44:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:44:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:44:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:44:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:44:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:44:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:44:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:44:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:44:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:44:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:44:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:44:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:44:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:44:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:44:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:44:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:44:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:44:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:44:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 00:44:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 00:44:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 00:44:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:44:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:44:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:44:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:44:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:44:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:44:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:44:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:44:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:44:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:44:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2019-11-07 00:44:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__empty [2019-11-07 00:44:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:44:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:44:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:44:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:44:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:44:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:44:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:44:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:44:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:44:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:44:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:44:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:44:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:44:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:44:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:44:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:44:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:44:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:44:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:44:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:44:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:44:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:44:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:44:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:44:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:44:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:44:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:44:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:44:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:44:56,244 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:44:56,244 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:44:56,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:56 BoogieIcfgContainer [2019-11-07 00:44:56,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:44:56,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:44:56,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:44:56,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:44:56,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:44:52" (1/3) ... [2019-11-07 00:44:56,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195e1226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:56, skipping insertion in model container [2019-11-07 00:44:56,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:53" (2/3) ... [2019-11-07 00:44:56,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195e1226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:56, skipping insertion in model container [2019-11-07 00:44:56,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:56" (3/3) ... [2019-11-07 00:44:56,259 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product26.cil.c [2019-11-07 00:44:56,272 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:44:56,283 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:44:56,298 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:44:56,340 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:44:56,340 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:44:56,340 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:44:56,340 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:44:56,340 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:44:56,340 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:44:56,341 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:44:56,341 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:44:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states. [2019-11-07 00:44:56,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-11-07 00:44:56,412 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:56,413 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:56,417 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:56,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:56,423 INFO L82 PathProgramCache]: Analyzing trace with hash 750707123, now seen corresponding path program 1 times [2019-11-07 00:44:56,433 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:56,434 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414232771] [2019-11-07 00:44:56,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:57,059 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414232771] [2019-11-07 00:44:57,060 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:57,060 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:57,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546956675] [2019-11-07 00:44:57,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:57,068 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:57,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:57,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:57,086 INFO L87 Difference]: Start difference. First operand 765 states. Second operand 4 states. [2019-11-07 00:44:57,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:57,325 INFO L93 Difference]: Finished difference Result 1179 states and 1913 transitions. [2019-11-07 00:44:57,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:57,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2019-11-07 00:44:57,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:57,359 INFO L225 Difference]: With dead ends: 1179 [2019-11-07 00:44:57,360 INFO L226 Difference]: Without dead ends: 598 [2019-11-07 00:44:57,369 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:44:57,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-11-07 00:44:57,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-11-07 00:44:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-11-07 00:44:57,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 958 transitions. [2019-11-07 00:44:57,472 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 958 transitions. Word has length 87 [2019-11-07 00:44:57,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:57,473 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 958 transitions. [2019-11-07 00:44:57,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:57,473 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 958 transitions. [2019-11-07 00:44:57,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-07 00:44:57,478 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:57,479 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:57,479 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:57,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:57,480 INFO L82 PathProgramCache]: Analyzing trace with hash 773508994, now seen corresponding path program 1 times [2019-11-07 00:44:57,480 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:57,480 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640039467] [2019-11-07 00:44:57,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:57,712 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640039467] [2019-11-07 00:44:57,713 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:57,713 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:57,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723074432] [2019-11-07 00:44:57,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:57,720 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:57,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:57,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:57,721 INFO L87 Difference]: Start difference. First operand 598 states and 958 transitions. Second operand 4 states. [2019-11-07 00:44:57,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:57,817 INFO L93 Difference]: Finished difference Result 1159 states and 1874 transitions. [2019-11-07 00:44:57,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:57,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-11-07 00:44:57,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:57,825 INFO L225 Difference]: With dead ends: 1159 [2019-11-07 00:44:57,825 INFO L226 Difference]: Without dead ends: 598 [2019-11-07 00:44:57,829 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:44:57,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-11-07 00:44:57,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-11-07 00:44:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-11-07 00:44:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 957 transitions. [2019-11-07 00:44:57,877 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 957 transitions. Word has length 90 [2019-11-07 00:44:57,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:57,878 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 957 transitions. [2019-11-07 00:44:57,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:57,878 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 957 transitions. [2019-11-07 00:44:57,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-07 00:44:57,881 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:57,881 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:57,881 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:57,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:57,883 INFO L82 PathProgramCache]: Analyzing trace with hash -580839806, now seen corresponding path program 1 times [2019-11-07 00:44:57,883 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:57,884 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17632697] [2019-11-07 00:44:57,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:58,089 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17632697] [2019-11-07 00:44:58,089 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:58,091 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:58,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309540359] [2019-11-07 00:44:58,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:58,094 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:58,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:58,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:58,095 INFO L87 Difference]: Start difference. First operand 598 states and 957 transitions. Second operand 4 states. [2019-11-07 00:44:58,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:58,185 INFO L93 Difference]: Finished difference Result 1159 states and 1873 transitions. [2019-11-07 00:44:58,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:58,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-11-07 00:44:58,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:58,196 INFO L225 Difference]: With dead ends: 1159 [2019-11-07 00:44:58,196 INFO L226 Difference]: Without dead ends: 598 [2019-11-07 00:44:58,200 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:44:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-11-07 00:44:58,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-11-07 00:44:58,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-11-07 00:44:58,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 956 transitions. [2019-11-07 00:44:58,244 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 956 transitions. Word has length 91 [2019-11-07 00:44:58,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:58,245 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 956 transitions. [2019-11-07 00:44:58,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:58,245 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 956 transitions. [2019-11-07 00:44:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 00:44:58,248 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:58,249 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:58,249 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:58,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:58,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1251478526, now seen corresponding path program 1 times [2019-11-07 00:44:58,249 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:58,250 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574550616] [2019-11-07 00:44:58,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:58,413 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574550616] [2019-11-07 00:44:58,414 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:58,414 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:58,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17541242] [2019-11-07 00:44:58,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:58,416 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:58,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:58,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:58,417 INFO L87 Difference]: Start difference. First operand 598 states and 956 transitions. Second operand 4 states. [2019-11-07 00:44:58,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:58,479 INFO L93 Difference]: Finished difference Result 1159 states and 1872 transitions. [2019-11-07 00:44:58,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:58,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-11-07 00:44:58,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:58,487 INFO L225 Difference]: With dead ends: 1159 [2019-11-07 00:44:58,487 INFO L226 Difference]: Without dead ends: 598 [2019-11-07 00:44:58,490 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:44:58,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-11-07 00:44:58,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-11-07 00:44:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-11-07 00:44:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 955 transitions. [2019-11-07 00:44:58,520 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 955 transitions. Word has length 92 [2019-11-07 00:44:58,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:58,521 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 955 transitions. [2019-11-07 00:44:58,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:58,521 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 955 transitions. [2019-11-07 00:44:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-07 00:44:58,524 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:58,525 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:58,525 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:58,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:58,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1208737154, now seen corresponding path program 1 times [2019-11-07 00:44:58,526 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:58,526 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285080854] [2019-11-07 00:44:58,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:58,652 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285080854] [2019-11-07 00:44:58,652 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:58,653 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:58,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268646976] [2019-11-07 00:44:58,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:58,654 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:58,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:58,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:58,655 INFO L87 Difference]: Start difference. First operand 598 states and 955 transitions. Second operand 4 states. [2019-11-07 00:44:58,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:58,714 INFO L93 Difference]: Finished difference Result 1159 states and 1871 transitions. [2019-11-07 00:44:58,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:58,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-11-07 00:44:58,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:58,720 INFO L225 Difference]: With dead ends: 1159 [2019-11-07 00:44:58,720 INFO L226 Difference]: Without dead ends: 598 [2019-11-07 00:44:58,723 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:44:58,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-11-07 00:44:58,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-11-07 00:44:58,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-11-07 00:44:58,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 954 transitions. [2019-11-07 00:44:58,750 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 954 transitions. Word has length 93 [2019-11-07 00:44:58,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:58,750 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 954 transitions. [2019-11-07 00:44:58,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:58,750 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 954 transitions. [2019-11-07 00:44:58,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-07 00:44:58,754 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:58,754 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:58,754 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:58,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:58,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1229172839, now seen corresponding path program 1 times [2019-11-07 00:44:58,755 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:58,755 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993837103] [2019-11-07 00:44:58,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:58,979 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993837103] [2019-11-07 00:44:58,979 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:58,980 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:58,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885548332] [2019-11-07 00:44:58,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:58,983 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:58,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:58,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:58,984 INFO L87 Difference]: Start difference. First operand 598 states and 954 transitions. Second operand 4 states. [2019-11-07 00:44:59,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:59,042 INFO L93 Difference]: Finished difference Result 1159 states and 1870 transitions. [2019-11-07 00:44:59,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:59,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-11-07 00:44:59,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:59,049 INFO L225 Difference]: With dead ends: 1159 [2019-11-07 00:44:59,050 INFO L226 Difference]: Without dead ends: 598 [2019-11-07 00:44:59,053 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:44:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-11-07 00:44:59,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-11-07 00:44:59,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-11-07 00:44:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 953 transitions. [2019-11-07 00:44:59,080 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 953 transitions. Word has length 94 [2019-11-07 00:44:59,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:59,081 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 953 transitions. [2019-11-07 00:44:59,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:59,082 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 953 transitions. [2019-11-07 00:44:59,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-07 00:44:59,085 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:59,085 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:59,085 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:59,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:59,086 INFO L82 PathProgramCache]: Analyzing trace with hash 701446266, now seen corresponding path program 1 times [2019-11-07 00:44:59,086 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:59,086 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571389710] [2019-11-07 00:44:59,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:59,270 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571389710] [2019-11-07 00:44:59,271 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:59,271 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:44:59,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140109308] [2019-11-07 00:44:59,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:44:59,272 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:59,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:44:59,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:44:59,273 INFO L87 Difference]: Start difference. First operand 598 states and 953 transitions. Second operand 10 states. [2019-11-07 00:44:59,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:59,438 INFO L93 Difference]: Finished difference Result 1111 states and 1782 transitions. [2019-11-07 00:44:59,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:44:59,438 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2019-11-07 00:44:59,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:59,446 INFO L225 Difference]: With dead ends: 1111 [2019-11-07 00:44:59,446 INFO L226 Difference]: Without dead ends: 592 [2019-11-07 00:44:59,449 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:44:59,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-11-07 00:44:59,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-11-07 00:44:59,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-11-07 00:44:59,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 940 transitions. [2019-11-07 00:44:59,474 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 940 transitions. Word has length 94 [2019-11-07 00:44:59,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:59,475 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 940 transitions. [2019-11-07 00:44:59,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:44:59,475 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 940 transitions. [2019-11-07 00:44:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 00:44:59,478 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:59,478 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:59,478 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:59,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:59,479 INFO L82 PathProgramCache]: Analyzing trace with hash -870815129, now seen corresponding path program 1 times [2019-11-07 00:44:59,479 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:59,480 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021208316] [2019-11-07 00:44:59,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:59,624 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021208316] [2019-11-07 00:44:59,625 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:59,625 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:44:59,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342283550] [2019-11-07 00:44:59,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:44:59,626 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:59,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:44:59,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:44:59,627 INFO L87 Difference]: Start difference. First operand 592 states and 940 transitions. Second operand 6 states. [2019-11-07 00:44:59,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:59,891 INFO L93 Difference]: Finished difference Result 1105 states and 1769 transitions. [2019-11-07 00:44:59,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:44:59,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-11-07 00:44:59,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:59,898 INFO L225 Difference]: With dead ends: 1105 [2019-11-07 00:44:59,898 INFO L226 Difference]: Without dead ends: 592 [2019-11-07 00:44:59,902 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:44:59,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-11-07 00:44:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-11-07 00:44:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-11-07 00:44:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 936 transitions. [2019-11-07 00:44:59,925 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 936 transitions. Word has length 95 [2019-11-07 00:44:59,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:59,927 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 936 transitions. [2019-11-07 00:44:59,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:44:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 936 transitions. [2019-11-07 00:44:59,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 00:44:59,929 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:59,930 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:59,930 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:59,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:59,930 INFO L82 PathProgramCache]: Analyzing trace with hash 48330685, now seen corresponding path program 1 times [2019-11-07 00:44:59,930 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:59,931 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068140583] [2019-11-07 00:44:59,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:00,099 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068140583] [2019-11-07 00:45:00,100 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:00,100 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:00,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120430948] [2019-11-07 00:45:00,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:00,102 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:00,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:00,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:00,102 INFO L87 Difference]: Start difference. First operand 592 states and 936 transitions. Second operand 6 states. [2019-11-07 00:45:00,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:00,301 INFO L93 Difference]: Finished difference Result 1105 states and 1765 transitions. [2019-11-07 00:45:00,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:00,302 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-11-07 00:45:00,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:00,307 INFO L225 Difference]: With dead ends: 1105 [2019-11-07 00:45:00,307 INFO L226 Difference]: Without dead ends: 592 [2019-11-07 00:45:00,311 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:00,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-11-07 00:45:00,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-11-07 00:45:00,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-11-07 00:45:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 932 transitions. [2019-11-07 00:45:00,333 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 932 transitions. Word has length 96 [2019-11-07 00:45:00,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:00,334 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 932 transitions. [2019-11-07 00:45:00,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:00,334 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 932 transitions. [2019-11-07 00:45:00,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 00:45:00,337 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:00,337 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:00,338 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:00,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:00,338 INFO L82 PathProgramCache]: Analyzing trace with hash -151934484, now seen corresponding path program 1 times [2019-11-07 00:45:00,338 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:00,338 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808119693] [2019-11-07 00:45:00,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:00,457 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808119693] [2019-11-07 00:45:00,458 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:00,458 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:00,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489054777] [2019-11-07 00:45:00,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:00,460 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:00,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:00,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:00,460 INFO L87 Difference]: Start difference. First operand 592 states and 932 transitions. Second operand 6 states. [2019-11-07 00:45:00,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:00,678 INFO L93 Difference]: Finished difference Result 1105 states and 1761 transitions. [2019-11-07 00:45:00,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:00,679 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-11-07 00:45:00,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:00,685 INFO L225 Difference]: With dead ends: 1105 [2019-11-07 00:45:00,685 INFO L226 Difference]: Without dead ends: 592 [2019-11-07 00:45:00,692 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:00,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-11-07 00:45:00,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-11-07 00:45:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-11-07 00:45:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 928 transitions. [2019-11-07 00:45:00,715 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 928 transitions. Word has length 97 [2019-11-07 00:45:00,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:00,715 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 928 transitions. [2019-11-07 00:45:00,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:00,715 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 928 transitions. [2019-11-07 00:45:00,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 00:45:00,718 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:00,719 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:00,719 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:00,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:00,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1813612140, now seen corresponding path program 1 times [2019-11-07 00:45:00,720 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:00,720 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742983101] [2019-11-07 00:45:00,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:00,868 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742983101] [2019-11-07 00:45:00,869 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:00,869 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:45:00,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761499800] [2019-11-07 00:45:00,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:45:00,871 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:00,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:45:00,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:45:00,872 INFO L87 Difference]: Start difference. First operand 592 states and 928 transitions. Second operand 7 states. [2019-11-07 00:45:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:01,059 INFO L93 Difference]: Finished difference Result 1105 states and 1757 transitions. [2019-11-07 00:45:01,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:45:01,059 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-11-07 00:45:01,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:01,065 INFO L225 Difference]: With dead ends: 1105 [2019-11-07 00:45:01,065 INFO L226 Difference]: Without dead ends: 571 [2019-11-07 00:45:01,069 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:01,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-11-07 00:45:01,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2019-11-07 00:45:01,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-11-07 00:45:01,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 894 transitions. [2019-11-07 00:45:01,100 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 894 transitions. Word has length 97 [2019-11-07 00:45:01,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:01,101 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 894 transitions. [2019-11-07 00:45:01,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:45:01,101 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 894 transitions. [2019-11-07 00:45:01,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-07 00:45:01,105 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:01,105 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:01,105 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:01,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:01,106 INFO L82 PathProgramCache]: Analyzing trace with hash -694201758, now seen corresponding path program 1 times [2019-11-07 00:45:01,106 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:01,107 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834043266] [2019-11-07 00:45:01,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:01,296 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834043266] [2019-11-07 00:45:01,296 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:01,296 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:01,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688027352] [2019-11-07 00:45:01,297 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:01,297 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:01,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:01,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:01,298 INFO L87 Difference]: Start difference. First operand 571 states and 894 transitions. Second operand 6 states. [2019-11-07 00:45:01,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:01,395 INFO L93 Difference]: Finished difference Result 1084 states and 1723 transitions. [2019-11-07 00:45:01,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:01,396 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-11-07 00:45:01,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:01,401 INFO L225 Difference]: With dead ends: 1084 [2019-11-07 00:45:01,401 INFO L226 Difference]: Without dead ends: 571 [2019-11-07 00:45:01,404 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:01,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-11-07 00:45:01,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2019-11-07 00:45:01,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-11-07 00:45:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 893 transitions. [2019-11-07 00:45:01,426 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 893 transitions. Word has length 98 [2019-11-07 00:45:01,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:01,427 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 893 transitions. [2019-11-07 00:45:01,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:01,428 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 893 transitions. [2019-11-07 00:45:01,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-07 00:45:01,430 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:01,430 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:01,431 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:01,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:01,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1046367601, now seen corresponding path program 1 times [2019-11-07 00:45:01,431 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:01,431 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973738499] [2019-11-07 00:45:01,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:01,576 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973738499] [2019-11-07 00:45:01,577 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:01,577 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:01,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931101911] [2019-11-07 00:45:01,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:01,578 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:01,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:01,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:01,579 INFO L87 Difference]: Start difference. First operand 571 states and 893 transitions. Second operand 6 states. [2019-11-07 00:45:01,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:01,681 INFO L93 Difference]: Finished difference Result 1084 states and 1722 transitions. [2019-11-07 00:45:01,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:01,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-11-07 00:45:01,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:01,688 INFO L225 Difference]: With dead ends: 1084 [2019-11-07 00:45:01,689 INFO L226 Difference]: Without dead ends: 571 [2019-11-07 00:45:01,692 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-11-07 00:45:01,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2019-11-07 00:45:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-11-07 00:45:01,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 892 transitions. [2019-11-07 00:45:01,711 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 892 transitions. Word has length 99 [2019-11-07 00:45:01,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:01,713 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 892 transitions. [2019-11-07 00:45:01,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:01,713 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 892 transitions. [2019-11-07 00:45:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-07 00:45:01,715 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:01,715 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:01,716 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:01,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:01,716 INFO L82 PathProgramCache]: Analyzing trace with hash 540428551, now seen corresponding path program 1 times [2019-11-07 00:45:01,716 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:01,717 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123427392] [2019-11-07 00:45:01,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:01,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:01,933 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123427392] [2019-11-07 00:45:01,933 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:01,933 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:45:01,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766989819] [2019-11-07 00:45:01,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:45:01,934 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:01,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:45:01,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:45:01,935 INFO L87 Difference]: Start difference. First operand 571 states and 892 transitions. Second operand 12 states. [2019-11-07 00:45:02,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:02,136 INFO L93 Difference]: Finished difference Result 1085 states and 1721 transitions. [2019-11-07 00:45:02,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:45:02,137 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2019-11-07 00:45:02,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:02,142 INFO L225 Difference]: With dead ends: 1085 [2019-11-07 00:45:02,142 INFO L226 Difference]: Without dead ends: 571 [2019-11-07 00:45:02,145 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:45:02,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-11-07 00:45:02,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2019-11-07 00:45:02,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-11-07 00:45:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 891 transitions. [2019-11-07 00:45:02,166 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 891 transitions. Word has length 100 [2019-11-07 00:45:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:02,166 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 891 transitions. [2019-11-07 00:45:02,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:45:02,166 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 891 transitions. [2019-11-07 00:45:02,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-11-07 00:45:02,168 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:02,169 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:02,169 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:02,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:02,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1660047310, now seen corresponding path program 1 times [2019-11-07 00:45:02,169 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:02,170 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772574964] [2019-11-07 00:45:02,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:02,385 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772574964] [2019-11-07 00:45:02,385 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:02,386 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:02,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763698179] [2019-11-07 00:45:02,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:02,387 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:02,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:02,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:02,388 INFO L87 Difference]: Start difference. First operand 571 states and 891 transitions. Second operand 6 states. [2019-11-07 00:45:06,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:06,294 INFO L93 Difference]: Finished difference Result 1686 states and 2716 transitions. [2019-11-07 00:45:06,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:06,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2019-11-07 00:45:06,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:06,311 INFO L225 Difference]: With dead ends: 1686 [2019-11-07 00:45:06,312 INFO L226 Difference]: Without dead ends: 1181 [2019-11-07 00:45:06,320 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:06,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2019-11-07 00:45:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1054. [2019-11-07 00:45:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1054 states. [2019-11-07 00:45:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1692 transitions. [2019-11-07 00:45:06,427 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1692 transitions. Word has length 101 [2019-11-07 00:45:06,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:06,428 INFO L462 AbstractCegarLoop]: Abstraction has 1054 states and 1692 transitions. [2019-11-07 00:45:06,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:06,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1692 transitions. [2019-11-07 00:45:06,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-07 00:45:06,438 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:06,438 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:06,438 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:06,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:06,439 INFO L82 PathProgramCache]: Analyzing trace with hash 335474846, now seen corresponding path program 1 times [2019-11-07 00:45:06,439 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:06,440 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520061894] [2019-11-07 00:45:06,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:06,729 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520061894] [2019-11-07 00:45:06,731 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:06,731 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:45:06,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992642228] [2019-11-07 00:45:06,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:45:06,733 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:06,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:45:06,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:45:06,733 INFO L87 Difference]: Start difference. First operand 1054 states and 1692 transitions. Second operand 12 states. [2019-11-07 00:45:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:16,634 INFO L93 Difference]: Finished difference Result 3366 states and 5439 transitions. [2019-11-07 00:45:16,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-07 00:45:16,635 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 133 [2019-11-07 00:45:16,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:16,653 INFO L225 Difference]: With dead ends: 3366 [2019-11-07 00:45:16,653 INFO L226 Difference]: Without dead ends: 2378 [2019-11-07 00:45:16,660 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:45:16,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2019-11-07 00:45:16,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 2320. [2019-11-07 00:45:16,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2019-11-07 00:45:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3712 transitions. [2019-11-07 00:45:16,785 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3712 transitions. Word has length 133 [2019-11-07 00:45:16,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:16,786 INFO L462 AbstractCegarLoop]: Abstraction has 2320 states and 3712 transitions. [2019-11-07 00:45:16,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:45:16,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3712 transitions. [2019-11-07 00:45:16,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-11-07 00:45:16,790 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:16,791 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:16,791 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:16,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:16,791 INFO L82 PathProgramCache]: Analyzing trace with hash -165410431, now seen corresponding path program 1 times [2019-11-07 00:45:16,792 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:16,792 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723894762] [2019-11-07 00:45:16,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:16,980 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723894762] [2019-11-07 00:45:16,980 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:16,980 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:45:16,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376693217] [2019-11-07 00:45:16,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:45:16,981 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:16,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:45:16,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:45:16,982 INFO L87 Difference]: Start difference. First operand 2320 states and 3712 transitions. Second operand 9 states. [2019-11-07 00:45:20,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:20,436 INFO L93 Difference]: Finished difference Result 4614 states and 7541 transitions. [2019-11-07 00:45:20,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:45:20,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 134 [2019-11-07 00:45:20,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:20,460 INFO L225 Difference]: With dead ends: 4614 [2019-11-07 00:45:20,461 INFO L226 Difference]: Without dead ends: 2360 [2019-11-07 00:45:20,475 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:45:20,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2019-11-07 00:45:20,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 2344. [2019-11-07 00:45:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2344 states. [2019-11-07 00:45:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 3796 transitions. [2019-11-07 00:45:20,639 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 3796 transitions. Word has length 134 [2019-11-07 00:45:20,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:20,640 INFO L462 AbstractCegarLoop]: Abstraction has 2344 states and 3796 transitions. [2019-11-07 00:45:20,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:45:20,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 3796 transitions. [2019-11-07 00:45:20,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-07 00:45:20,644 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:20,644 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:20,644 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:20,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:20,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1058567112, now seen corresponding path program 1 times [2019-11-07 00:45:20,645 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:20,645 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203983986] [2019-11-07 00:45:20,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:20,803 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203983986] [2019-11-07 00:45:20,803 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:20,804 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:45:20,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384520378] [2019-11-07 00:45:20,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:45:20,804 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:20,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:45:20,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:20,805 INFO L87 Difference]: Start difference. First operand 2344 states and 3796 transitions. Second operand 8 states. [2019-11-07 00:45:27,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:27,042 INFO L93 Difference]: Finished difference Result 7947 states and 13293 transitions. [2019-11-07 00:45:27,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 00:45:27,043 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2019-11-07 00:45:27,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:27,132 INFO L225 Difference]: With dead ends: 7947 [2019-11-07 00:45:27,132 INFO L226 Difference]: Without dead ends: 5669 [2019-11-07 00:45:27,174 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:45:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2019-11-07 00:45:27,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5621. [2019-11-07 00:45:27,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5621 states. [2019-11-07 00:45:27,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5621 states to 5621 states and 8997 transitions. [2019-11-07 00:45:27,675 INFO L78 Accepts]: Start accepts. Automaton has 5621 states and 8997 transitions. Word has length 135 [2019-11-07 00:45:27,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:27,676 INFO L462 AbstractCegarLoop]: Abstraction has 5621 states and 8997 transitions. [2019-11-07 00:45:27,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:45:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5621 states and 8997 transitions. [2019-11-07 00:45:27,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-07 00:45:27,688 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:27,688 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:27,688 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:27,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:27,689 INFO L82 PathProgramCache]: Analyzing trace with hash 2066663089, now seen corresponding path program 1 times [2019-11-07 00:45:27,689 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:27,689 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401636587] [2019-11-07 00:45:27,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY