/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_spec3_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:43:46,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:43:46,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:43:46,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:43:46,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:43:46,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:43:46,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:43:46,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:43:46,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:43:46,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:43:46,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:43:46,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:43:46,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:43:46,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:43:46,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:43:46,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:43:46,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:43:46,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:43:46,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:43:46,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:43:46,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:43:46,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:43:46,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:43:46,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:43:46,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:43:46,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:43:46,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:43:46,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:43:46,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:43:46,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:43:46,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:43:46,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:43:46,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:43:46,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:43:46,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:43:46,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:43:46,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:43:46,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:43:46,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:43:46,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:43:46,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:43:46,857 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 00:43:46,872 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:43:46,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:43:46,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:43:46,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:43:46,874 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:43:46,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:43:46,874 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:43:46,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:43:46,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:43:46,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:43:46,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:43:46,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:43:46,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:43:46,876 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:43:46,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:43:46,876 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:43:46,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:43:46,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:43:46,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:43:46,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:43:46,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:43:46,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:43:46,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:43:46,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:43:46,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:43:46,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:43:46,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:43:46,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:43:46,881 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 00:43:47,237 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:43:47,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:43:47,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:43:47,266 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:43:47,266 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:43:47,267 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product23.cil.c [2019-11-07 00:43:47,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f405dc6ad/ec076874f2bf4d34815d10601abe86c4/FLAG273fc7823 [2019-11-07 00:43:47,937 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:43:47,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product23.cil.c [2019-11-07 00:43:47,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f405dc6ad/ec076874f2bf4d34815d10601abe86c4/FLAG273fc7823 [2019-11-07 00:43:48,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f405dc6ad/ec076874f2bf4d34815d10601abe86c4 [2019-11-07 00:43:48,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:43:48,166 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:43:48,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:43:48,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:43:48,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:43:48,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:43:48" (1/1) ... [2019-11-07 00:43:48,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f3de09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:48, skipping insertion in model container [2019-11-07 00:43:48,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:43:48" (1/1) ... [2019-11-07 00:43:48,187 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:43:48,275 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:43:49,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:43:49,085 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:43:49,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:43:49,318 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:43:49,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:49 WrapperNode [2019-11-07 00:43:49,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:43:49,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:43:49,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:43:49,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:43:49,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:49" (1/1) ... [2019-11-07 00:43:49,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:49" (1/1) ... [2019-11-07 00:43:49,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:49" (1/1) ... [2019-11-07 00:43:49,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:49" (1/1) ... [2019-11-07 00:43:49,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:49" (1/1) ... [2019-11-07 00:43:49,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:49" (1/1) ... [2019-11-07 00:43:49,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:49" (1/1) ... [2019-11-07 00:43:49,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:43:49,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:43:49,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:43:49,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:43:49,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:49" (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 00:43:49,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:43:49,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:43:49,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:43:49,651 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:43:49,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 00:43:49,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 00:43:49,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:43:49,653 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:43:49,654 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:43:49,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:43:49,655 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 00:43:49,655 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:43:49,655 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 00:43:49,656 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:43:49,656 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:43:49,657 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:43:49,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:43:49,659 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:43:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:43:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:43:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:43:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:43:49,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:43:49,662 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 00:43:49,662 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 00:43:49,662 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:43:49,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:43:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:43:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 00:43:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 00:43:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:43:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:43:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:43:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:43:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:43:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:43:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 00:43:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 00:43:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:43:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:43:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:43:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:43:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:43:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:43:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:43:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:43:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:43:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:43:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:43:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:43:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:43:49,668 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:43:49,668 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:43:49,668 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:43:49,668 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:43:49,668 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:43:49,669 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:43:49,669 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:43:49,669 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:43:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:43:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:43:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:43:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:43:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:43:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:43:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:43:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:43:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:43:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:43:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:43:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:43:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:43:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:43:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:43:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:43:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:43:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:43:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:43:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:43:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:43:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:43:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:43:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:43:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:43:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:43:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:43:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:43:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:43:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:43:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 00:43:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 00:43:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:43:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:43:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:43:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:43:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:43:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:43:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:43:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:43:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:43:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:43:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:43:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:43:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:43:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:43:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:43:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:43:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:43:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:43:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 00:43:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 00:43:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 00:43:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 00:43:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:43:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:43:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:43:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:43:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 00:43:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 00:43:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:43:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:43:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 00:43:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 00:43:49,687 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:43:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:43:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:43:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:43:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:43:49,689 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:43:49,689 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:43:49,689 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:43:49,689 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:43:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:43:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:43:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:43:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:43:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:43:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:43:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:43:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:43:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:43:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:43:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:43:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:43:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:43:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:43:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:43:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:43:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:43:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:43:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:43:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:43:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:43:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:43:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:43:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:43:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:43:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:43:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:43:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:43:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:43:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:43:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:43:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:43:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:43:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:43:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:43:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:43:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:43:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:43:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:43:52,055 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:43:52,056 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:43:52,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:43:52 BoogieIcfgContainer [2019-11-07 00:43:52,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:43:52,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:43:52,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:43:52,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:43:52,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:43:48" (1/3) ... [2019-11-07 00:43:52,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce96fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:43:52, skipping insertion in model container [2019-11-07 00:43:52,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:49" (2/3) ... [2019-11-07 00:43:52,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce96fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:43:52, skipping insertion in model container [2019-11-07 00:43:52,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:43:52" (3/3) ... [2019-11-07 00:43:52,068 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product23.cil.c [2019-11-07 00:43:52,080 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:43:52,093 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:43:52,104 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:43:52,149 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:43:52,150 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:43:52,150 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:43:52,150 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:43:52,150 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:43:52,150 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:43:52,150 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:43:52,150 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:43:52,195 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states. [2019-11-07 00:43:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-07 00:43:52,220 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:52,221 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:52,226 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:52,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:52,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1013618199, now seen corresponding path program 1 times [2019-11-07 00:43:52,242 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:52,242 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289307757] [2019-11-07 00:43:52,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:43:52,963 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289307757] [2019-11-07 00:43:52,964 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:52,964 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:52,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091124286] [2019-11-07 00:43:52,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:52,974 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:52,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:52,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:52,992 INFO L87 Difference]: Start difference. First operand 821 states. Second operand 7 states. [2019-11-07 00:43:53,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:53,356 INFO L93 Difference]: Finished difference Result 1321 states and 2120 transitions. [2019-11-07 00:43:53,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:53,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2019-11-07 00:43:53,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:53,399 INFO L225 Difference]: With dead ends: 1321 [2019-11-07 00:43:53,400 INFO L226 Difference]: Without dead ends: 669 [2019-11-07 00:43:53,412 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 00:43:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2019-11-07 00:43:53,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 667. [2019-11-07 00:43:53,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2019-11-07 00:43:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1055 transitions. [2019-11-07 00:43:53,546 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1055 transitions. Word has length 141 [2019-11-07 00:43:53,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:53,548 INFO L462 AbstractCegarLoop]: Abstraction has 667 states and 1055 transitions. [2019-11-07 00:43:53,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:53,548 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1055 transitions. [2019-11-07 00:43:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-07 00:43:53,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:53,558 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:53,559 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:53,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:53,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1339739785, now seen corresponding path program 1 times [2019-11-07 00:43:53,559 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:53,560 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965854826] [2019-11-07 00:43:53,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:43:53,841 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965854826] [2019-11-07 00:43:53,842 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:53,842 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:43:53,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684235977] [2019-11-07 00:43:53,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:43:53,847 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:53,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:43:53,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:43:53,847 INFO L87 Difference]: Start difference. First operand 667 states and 1055 transitions. Second operand 4 states. [2019-11-07 00:43:53,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:53,964 INFO L93 Difference]: Finished difference Result 1300 states and 2075 transitions. [2019-11-07 00:43:53,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:43:53,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-11-07 00:43:53,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:53,975 INFO L225 Difference]: With dead ends: 1300 [2019-11-07 00:43:53,975 INFO L226 Difference]: Without dead ends: 649 [2019-11-07 00:43:53,980 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 00:43:53,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2019-11-07 00:43:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 649. [2019-11-07 00:43:54,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2019-11-07 00:43:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1022 transitions. [2019-11-07 00:43:54,068 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1022 transitions. Word has length 142 [2019-11-07 00:43:54,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:54,068 INFO L462 AbstractCegarLoop]: Abstraction has 649 states and 1022 transitions. [2019-11-07 00:43:54,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:43:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1022 transitions. [2019-11-07 00:43:54,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-07 00:43:54,075 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:54,076 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:54,076 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:54,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:54,076 INFO L82 PathProgramCache]: Analyzing trace with hash -415526825, now seen corresponding path program 1 times [2019-11-07 00:43:54,080 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:54,080 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027523636] [2019-11-07 00:43:54,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:43:54,414 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027523636] [2019-11-07 00:43:54,414 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:54,414 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:54,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730585186] [2019-11-07 00:43:54,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:54,416 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:54,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:54,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:54,416 INFO L87 Difference]: Start difference. First operand 649 states and 1022 transitions. Second operand 7 states. [2019-11-07 00:43:54,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:54,544 INFO L93 Difference]: Finished difference Result 1269 states and 2017 transitions. [2019-11-07 00:43:54,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:54,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2019-11-07 00:43:54,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:54,552 INFO L225 Difference]: With dead ends: 1269 [2019-11-07 00:43:54,552 INFO L226 Difference]: Without dead ends: 643 [2019-11-07 00:43:54,556 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 00:43:54,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-11-07 00:43:54,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-11-07 00:43:54,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-11-07 00:43:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1009 transitions. [2019-11-07 00:43:54,587 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1009 transitions. Word has length 142 [2019-11-07 00:43:54,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:54,588 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 1009 transitions. [2019-11-07 00:43:54,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:54,588 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1009 transitions. [2019-11-07 00:43:54,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-11-07 00:43:54,592 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:54,592 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:54,593 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:54,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:54,593 INFO L82 PathProgramCache]: Analyzing trace with hash -390482629, now seen corresponding path program 1 times [2019-11-07 00:43:54,594 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:54,594 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305838406] [2019-11-07 00:43:54,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:43:54,815 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305838406] [2019-11-07 00:43:54,816 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:54,816 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:54,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756190545] [2019-11-07 00:43:54,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:54,817 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:54,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:54,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:54,817 INFO L87 Difference]: Start difference. First operand 643 states and 1009 transitions. Second operand 7 states. [2019-11-07 00:43:54,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:54,994 INFO L93 Difference]: Finished difference Result 1257 states and 1991 transitions. [2019-11-07 00:43:54,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:54,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2019-11-07 00:43:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:55,003 INFO L225 Difference]: With dead ends: 1257 [2019-11-07 00:43:55,003 INFO L226 Difference]: Without dead ends: 637 [2019-11-07 00:43:55,008 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 00:43:55,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-11-07 00:43:55,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2019-11-07 00:43:55,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2019-11-07 00:43:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 996 transitions. [2019-11-07 00:43:55,053 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 996 transitions. Word has length 143 [2019-11-07 00:43:55,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:55,054 INFO L462 AbstractCegarLoop]: Abstraction has 637 states and 996 transitions. [2019-11-07 00:43:55,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:55,054 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 996 transitions. [2019-11-07 00:43:55,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-07 00:43:55,062 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:55,062 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:55,062 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:55,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:55,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1764754427, now seen corresponding path program 1 times [2019-11-07 00:43:55,063 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:55,064 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221935763] [2019-11-07 00:43:55,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:43:55,268 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221935763] [2019-11-07 00:43:55,269 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:55,269 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:55,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579327731] [2019-11-07 00:43:55,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:55,270 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:55,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:55,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:55,271 INFO L87 Difference]: Start difference. First operand 637 states and 996 transitions. Second operand 7 states. [2019-11-07 00:43:55,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:55,368 INFO L93 Difference]: Finished difference Result 1245 states and 1965 transitions. [2019-11-07 00:43:55,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:55,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2019-11-07 00:43:55,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:55,376 INFO L225 Difference]: With dead ends: 1245 [2019-11-07 00:43:55,376 INFO L226 Difference]: Without dead ends: 631 [2019-11-07 00:43:55,380 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 00:43:55,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-11-07 00:43:55,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-11-07 00:43:55,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-11-07 00:43:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 983 transitions. [2019-11-07 00:43:55,406 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 983 transitions. Word has length 144 [2019-11-07 00:43:55,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:55,407 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 983 transitions. [2019-11-07 00:43:55,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:55,407 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 983 transitions. [2019-11-07 00:43:55,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-07 00:43:55,411 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:55,411 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:55,412 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:55,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:55,414 INFO L82 PathProgramCache]: Analyzing trace with hash 525807612, now seen corresponding path program 1 times [2019-11-07 00:43:55,414 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:55,414 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091153605] [2019-11-07 00:43:55,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:43:55,592 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091153605] [2019-11-07 00:43:55,593 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:55,594 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:55,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126497317] [2019-11-07 00:43:55,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:55,595 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:55,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:55,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:55,598 INFO L87 Difference]: Start difference. First operand 631 states and 983 transitions. Second operand 7 states. [2019-11-07 00:43:55,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:55,735 INFO L93 Difference]: Finished difference Result 1233 states and 1939 transitions. [2019-11-07 00:43:55,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:55,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2019-11-07 00:43:55,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:55,742 INFO L225 Difference]: With dead ends: 1233 [2019-11-07 00:43:55,743 INFO L226 Difference]: Without dead ends: 631 [2019-11-07 00:43:55,747 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 00:43:55,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-11-07 00:43:55,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-11-07 00:43:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-11-07 00:43:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 982 transitions. [2019-11-07 00:43:55,779 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 982 transitions. Word has length 144 [2019-11-07 00:43:55,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:55,780 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 982 transitions. [2019-11-07 00:43:55,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:55,780 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 982 transitions. [2019-11-07 00:43:55,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-07 00:43:55,786 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:55,787 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:55,787 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:55,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:55,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1236493407, now seen corresponding path program 1 times [2019-11-07 00:43:55,788 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:55,788 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057730643] [2019-11-07 00:43:55,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:55,975 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:43:55,976 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057730643] [2019-11-07 00:43:55,976 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:55,976 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:55,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095041535] [2019-11-07 00:43:55,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:55,977 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:55,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:55,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:55,978 INFO L87 Difference]: Start difference. First operand 631 states and 982 transitions. Second operand 5 states. [2019-11-07 00:43:56,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:56,066 INFO L93 Difference]: Finished difference Result 1232 states and 1936 transitions. [2019-11-07 00:43:56,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:56,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2019-11-07 00:43:56,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:56,073 INFO L225 Difference]: With dead ends: 1232 [2019-11-07 00:43:56,073 INFO L226 Difference]: Without dead ends: 631 [2019-11-07 00:43:56,077 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:56,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-11-07 00:43:56,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-11-07 00:43:56,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-11-07 00:43:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 981 transitions. [2019-11-07 00:43:56,102 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 981 transitions. Word has length 145 [2019-11-07 00:43:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:56,102 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 981 transitions. [2019-11-07 00:43:56,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:56,103 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 981 transitions. [2019-11-07 00:43:56,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-07 00:43:56,107 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:56,107 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:56,107 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:56,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1973263729, now seen corresponding path program 1 times [2019-11-07 00:43:56,108 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:56,108 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944187981] [2019-11-07 00:43:56,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:43:56,292 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944187981] [2019-11-07 00:43:56,292 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:56,292 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:56,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696654009] [2019-11-07 00:43:56,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:56,293 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:56,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:56,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:56,294 INFO L87 Difference]: Start difference. First operand 631 states and 981 transitions. Second operand 5 states. [2019-11-07 00:43:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:56,392 INFO L93 Difference]: Finished difference Result 1232 states and 1934 transitions. [2019-11-07 00:43:56,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:56,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2019-11-07 00:43:56,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:56,402 INFO L225 Difference]: With dead ends: 1232 [2019-11-07 00:43:56,402 INFO L226 Difference]: Without dead ends: 631 [2019-11-07 00:43:56,409 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-11-07 00:43:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-11-07 00:43:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-11-07 00:43:56,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 980 transitions. [2019-11-07 00:43:56,444 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 980 transitions. Word has length 146 [2019-11-07 00:43:56,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:56,445 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 980 transitions. [2019-11-07 00:43:56,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:56,446 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 980 transitions. [2019-11-07 00:43:56,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-07 00:43:56,450 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:56,450 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:56,451 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:56,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:56,451 INFO L82 PathProgramCache]: Analyzing trace with hash 696479226, now seen corresponding path program 1 times [2019-11-07 00:43:56,451 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:56,452 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276260572] [2019-11-07 00:43:56,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:43:56,728 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276260572] [2019-11-07 00:43:56,729 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:56,729 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:56,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228467745] [2019-11-07 00:43:56,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:56,732 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:56,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:56,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:56,738 INFO L87 Difference]: Start difference. First operand 631 states and 980 transitions. Second operand 5 states. [2019-11-07 00:43:56,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:56,851 INFO L93 Difference]: Finished difference Result 1232 states and 1932 transitions. [2019-11-07 00:43:56,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:56,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-11-07 00:43:56,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:56,860 INFO L225 Difference]: With dead ends: 1232 [2019-11-07 00:43:56,860 INFO L226 Difference]: Without dead ends: 631 [2019-11-07 00:43:56,866 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:56,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-11-07 00:43:56,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-11-07 00:43:56,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-11-07 00:43:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 979 transitions. [2019-11-07 00:43:56,903 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 979 transitions. Word has length 147 [2019-11-07 00:43:56,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:56,903 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 979 transitions. [2019-11-07 00:43:56,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 979 transitions. [2019-11-07 00:43:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-11-07 00:43:56,911 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:56,911 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:56,912 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:56,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:56,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1424004588, now seen corresponding path program 1 times [2019-11-07 00:43:56,913 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:56,913 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087551856] [2019-11-07 00:43:56,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:43:57,136 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087551856] [2019-11-07 00:43:57,137 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:57,138 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:57,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483169065] [2019-11-07 00:43:57,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:57,139 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:57,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:57,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:57,140 INFO L87 Difference]: Start difference. First operand 631 states and 979 transitions. Second operand 5 states. [2019-11-07 00:43:57,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:57,209 INFO L93 Difference]: Finished difference Result 1232 states and 1930 transitions. [2019-11-07 00:43:57,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:57,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-11-07 00:43:57,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:57,215 INFO L225 Difference]: With dead ends: 1232 [2019-11-07 00:43:57,216 INFO L226 Difference]: Without dead ends: 631 [2019-11-07 00:43:57,224 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:57,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-11-07 00:43:57,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-11-07 00:43:57,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-11-07 00:43:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 978 transitions. [2019-11-07 00:43:57,247 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 978 transitions. Word has length 148 [2019-11-07 00:43:57,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:57,247 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 978 transitions. [2019-11-07 00:43:57,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:57,248 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 978 transitions. [2019-11-07 00:43:57,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 00:43:57,252 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:57,253 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:57,253 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:57,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:57,253 INFO L82 PathProgramCache]: Analyzing trace with hash -139373675, now seen corresponding path program 1 times [2019-11-07 00:43:57,253 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:57,254 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664086816] [2019-11-07 00:43:57,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-07 00:43:57,500 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664086816] [2019-11-07 00:43:57,500 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61634296] [2019-11-07 00:43:57,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:58,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 3069 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:43:58,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 00:43:58,368 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:43:58,503 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:43:58,503 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-11-07 00:43:58,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716940745] [2019-11-07 00:43:58,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:43:58,504 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:58,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:43:58,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:43:58,505 INFO L87 Difference]: Start difference. First operand 631 states and 978 transitions. Second operand 3 states. [2019-11-07 00:43:58,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:58,605 INFO L93 Difference]: Finished difference Result 1772 states and 2794 transitions. [2019-11-07 00:43:58,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:43:58,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-11-07 00:43:58,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:58,617 INFO L225 Difference]: With dead ends: 1772 [2019-11-07 00:43:58,617 INFO L226 Difference]: Without dead ends: 1175 [2019-11-07 00:43:58,621 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:43:58,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2019-11-07 00:43:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1162. [2019-11-07 00:43:58,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1162 states. [2019-11-07 00:43:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1819 transitions. [2019-11-07 00:43:58,689 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1819 transitions. Word has length 149 [2019-11-07 00:43:58,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:58,693 INFO L462 AbstractCegarLoop]: Abstraction has 1162 states and 1819 transitions. [2019-11-07 00:43:58,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:43:58,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1819 transitions. [2019-11-07 00:43:58,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-11-07 00:43:58,700 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:58,700 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:58,918 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:58,918 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:58,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:58,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1718123778, now seen corresponding path program 1 times [2019-11-07 00:43:58,919 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:58,920 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777830160] [2019-11-07 00:43:58,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:43:59,307 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777830160] [2019-11-07 00:43:59,307 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:59,307 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:59,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802934147] [2019-11-07 00:43:59,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:59,309 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:59,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:59,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:59,310 INFO L87 Difference]: Start difference. First operand 1162 states and 1819 transitions. Second operand 7 states. [2019-11-07 00:44:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:02,163 INFO L93 Difference]: Finished difference Result 3412 states and 5478 transitions. [2019-11-07 00:44:02,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:44:02,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2019-11-07 00:44:02,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:02,182 INFO L225 Difference]: With dead ends: 3412 [2019-11-07 00:44:02,182 INFO L226 Difference]: Without dead ends: 2284 [2019-11-07 00:44:02,191 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:44:02,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2019-11-07 00:44:02,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 2218. [2019-11-07 00:44:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2218 states. [2019-11-07 00:44:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3531 transitions. [2019-11-07 00:44:02,327 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3531 transitions. Word has length 153 [2019-11-07 00:44:02,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:02,328 INFO L462 AbstractCegarLoop]: Abstraction has 2218 states and 3531 transitions. [2019-11-07 00:44:02,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:02,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3531 transitions. [2019-11-07 00:44:02,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-07 00:44:02,337 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:02,337 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:02,338 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:02,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:02,338 INFO L82 PathProgramCache]: Analyzing trace with hash 933622094, now seen corresponding path program 1 times [2019-11-07 00:44:02,339 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:02,339 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070853780] [2019-11-07 00:44:02,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-07 00:44:02,586 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070853780] [2019-11-07 00:44:02,586 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134216240] [2019-11-07 00:44:02,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:03,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 3089 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:44:03,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:44:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:44:03,412 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:44:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:44:03,709 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:44:03,710 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-11-07 00:44:03,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078467466] [2019-11-07 00:44:03,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:03,711 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:03,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:03,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:44:03,713 INFO L87 Difference]: Start difference. First operand 2218 states and 3531 transitions. Second operand 4 states. [2019-11-07 00:44:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:03,917 INFO L93 Difference]: Finished difference Result 4466 states and 7183 transitions. [2019-11-07 00:44:03,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:03,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2019-11-07 00:44:03,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:03,947 INFO L225 Difference]: With dead ends: 4466 [2019-11-07 00:44:03,947 INFO L226 Difference]: Without dead ends: 2282 [2019-11-07 00:44:03,970 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:44:03,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2019-11-07 00:44:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2240. [2019-11-07 00:44:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2240 states. [2019-11-07 00:44:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 3559 transitions. [2019-11-07 00:44:04,095 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 3559 transitions. Word has length 154 [2019-11-07 00:44:04,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:04,096 INFO L462 AbstractCegarLoop]: Abstraction has 2240 states and 3559 transitions. [2019-11-07 00:44:04,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 3559 transitions. [2019-11-07 00:44:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-07 00:44:04,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:04,103 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:04,311 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:04,312 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:04,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:04,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1569287416, now seen corresponding path program 1 times [2019-11-07 00:44:04,313 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:04,313 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924204890] [2019-11-07 00:44:04,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:04,608 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-07 00:44:04,609 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924204890] [2019-11-07 00:44:04,609 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593393980] [2019-11-07 00:44:04,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:05,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:44:05,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:44:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 00:44:05,420 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:44:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:44:05,543 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:44:05,543 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-11-07 00:44:05,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131827492] [2019-11-07 00:44:05,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:44:05,547 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:05,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:44:05,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:44:05,547 INFO L87 Difference]: Start difference. First operand 2240 states and 3559 transitions. Second operand 3 states. [2019-11-07 00:44:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:05,709 INFO L93 Difference]: Finished difference Result 5516 states and 8850 transitions. [2019-11-07 00:44:05,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:44:05,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2019-11-07 00:44:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:05,743 INFO L225 Difference]: With dead ends: 5516 [2019-11-07 00:44:05,743 INFO L226 Difference]: Without dead ends: 3310 [2019-11-07 00:44:05,757 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:44:05,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2019-11-07 00:44:05,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 3210. [2019-11-07 00:44:05,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3210 states. [2019-11-07 00:44:05,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 5119 transitions. [2019-11-07 00:44:05,928 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 5119 transitions. Word has length 150 [2019-11-07 00:44:05,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:05,930 INFO L462 AbstractCegarLoop]: Abstraction has 3210 states and 5119 transitions. [2019-11-07 00:44:05,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:44:05,930 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 5119 transitions. [2019-11-07 00:44:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-11-07 00:44:05,939 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:05,939 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:06,147 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:06,147 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:06,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:06,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1132378497, now seen corresponding path program 1 times [2019-11-07 00:44:06,148 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:06,148 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209117253] [2019-11-07 00:44:06,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 00:44:06,327 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209117253] [2019-11-07 00:44:06,328 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:06,329 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:06,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077357819] [2019-11-07 00:44:06,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:06,330 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:06,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:06,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:06,331 INFO L87 Difference]: Start difference. First operand 3210 states and 5119 transitions. Second operand 4 states. [2019-11-07 00:44:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:06,534 INFO L93 Difference]: Finished difference Result 6380 states and 10251 transitions. [2019-11-07 00:44:06,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:44:06,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2019-11-07 00:44:06,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:06,564 INFO L225 Difference]: With dead ends: 6380 [2019-11-07 00:44:06,564 INFO L226 Difference]: Without dead ends: 3204 [2019-11-07 00:44:06,585 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 00:44:06,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2019-11-07 00:44:06,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 3194. [2019-11-07 00:44:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3194 states. [2019-11-07 00:44:06,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 5067 transitions. [2019-11-07 00:44:06,773 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 5067 transitions. Word has length 153 [2019-11-07 00:44:06,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:06,774 INFO L462 AbstractCegarLoop]: Abstraction has 3194 states and 5067 transitions. [2019-11-07 00:44:06,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:06,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 5067 transitions. [2019-11-07 00:44:06,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-11-07 00:44:06,786 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:06,786 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:06,786 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:06,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:06,787 INFO L82 PathProgramCache]: Analyzing trace with hash -940798830, now seen corresponding path program 1 times [2019-11-07 00:44:06,787 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:06,788 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991578890] [2019-11-07 00:44:06,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:44:07,106 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991578890] [2019-11-07 00:44:07,107 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352670856] [2019-11-07 00:44:07,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:07,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 3089 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:44:07,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:44:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:44:08,098 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:44:08,310 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:44:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-07 00:44:08,460 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:44:08,461 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-11-07 00:44:08,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312820684] [2019-11-07 00:44:08,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:44:08,462 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:08,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:44:08,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:44:08,462 INFO L87 Difference]: Start difference. First operand 3194 states and 5067 transitions. Second operand 6 states. [2019-11-07 00:44:09,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:09,788 INFO L93 Difference]: Finished difference Result 8645 states and 13879 transitions. [2019-11-07 00:44:09,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:44:09,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2019-11-07 00:44:09,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:09,832 INFO L225 Difference]: With dead ends: 8645 [2019-11-07 00:44:09,832 INFO L226 Difference]: Without dead ends: 5485 [2019-11-07 00:44:09,853 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 298 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:44:09,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5485 states. [2019-11-07 00:44:10,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5485 to 5445. [2019-11-07 00:44:10,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5445 states. [2019-11-07 00:44:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5445 states to 5445 states and 8508 transitions. [2019-11-07 00:44:10,168 INFO L78 Accepts]: Start accepts. Automaton has 5445 states and 8508 transitions. Word has length 153 [2019-11-07 00:44:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:10,169 INFO L462 AbstractCegarLoop]: Abstraction has 5445 states and 8508 transitions. [2019-11-07 00:44:10,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:44:10,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5445 states and 8508 transitions. [2019-11-07 00:44:10,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-11-07 00:44:10,175 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:10,175 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:10,383 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:10,383 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:10,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:10,383 INFO L82 PathProgramCache]: Analyzing trace with hash -888969153, now seen corresponding path program 1 times [2019-11-07 00:44:10,384 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:10,384 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184670381] [2019-11-07 00:44:10,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-07 00:44:10,549 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184670381] [2019-11-07 00:44:10,549 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:10,549 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:10,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150852262] [2019-11-07 00:44:10,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:10,550 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:10,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:10,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:10,551 INFO L87 Difference]: Start difference. First operand 5445 states and 8508 transitions. Second operand 7 states. [2019-11-07 00:44:13,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:13,333 INFO L93 Difference]: Finished difference Result 16236 states and 26000 transitions. [2019-11-07 00:44:13,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:44:13,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2019-11-07 00:44:13,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:14,023 INFO L225 Difference]: With dead ends: 16236 [2019-11-07 00:44:14,024 INFO L226 Difference]: Without dead ends: 10825 [2019-11-07 00:44:14,042 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:44:14,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2019-11-07 00:44:14,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 10741. [2019-11-07 00:44:14,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10741 states. [2019-11-07 00:44:14,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10741 states to 10741 states and 16957 transitions. [2019-11-07 00:44:14,494 INFO L78 Accepts]: Start accepts. Automaton has 10741 states and 16957 transitions. Word has length 161 [2019-11-07 00:44:14,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:14,494 INFO L462 AbstractCegarLoop]: Abstraction has 10741 states and 16957 transitions. [2019-11-07 00:44:14,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 10741 states and 16957 transitions. [2019-11-07 00:44:14,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-07 00:44:14,501 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:14,501 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:14,502 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:14,502 INFO L82 PathProgramCache]: Analyzing trace with hash 855105821, now seen corresponding path program 1 times [2019-11-07 00:44:14,502 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:14,503 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973423066] [2019-11-07 00:44:14,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 00:44:14,640 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973423066] [2019-11-07 00:44:14,640 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:14,640 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:14,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133113186] [2019-11-07 00:44:14,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:14,641 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:14,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:14,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:14,642 INFO L87 Difference]: Start difference. First operand 10741 states and 16957 transitions. Second operand 4 states. [2019-11-07 00:44:15,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:15,056 INFO L93 Difference]: Finished difference Result 21486 states and 34201 transitions. [2019-11-07 00:44:15,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:44:15,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2019-11-07 00:44:15,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:15,127 INFO L225 Difference]: With dead ends: 21486 [2019-11-07 00:44:15,127 INFO L226 Difference]: Without dead ends: 10776 [2019-11-07 00:44:15,165 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 00:44:15,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10776 states. [2019-11-07 00:44:15,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10776 to 10744. [2019-11-07 00:44:15,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10744 states. [2019-11-07 00:44:15,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10744 states to 10744 states and 16921 transitions. [2019-11-07 00:44:15,788 INFO L78 Accepts]: Start accepts. Automaton has 10744 states and 16921 transitions. Word has length 162 [2019-11-07 00:44:15,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:15,789 INFO L462 AbstractCegarLoop]: Abstraction has 10744 states and 16921 transitions. [2019-11-07 00:44:15,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:15,789 INFO L276 IsEmpty]: Start isEmpty. Operand 10744 states and 16921 transitions. [2019-11-07 00:44:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 00:44:15,796 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:15,796 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:15,796 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:15,797 INFO L82 PathProgramCache]: Analyzing trace with hash 886946433, now seen corresponding path program 1 times [2019-11-07 00:44:15,797 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:15,797 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532414257] [2019-11-07 00:44:15,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:44:15,952 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532414257] [2019-11-07 00:44:15,952 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:15,952 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:15,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525317279] [2019-11-07 00:44:15,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:15,953 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:15,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:15,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:15,954 INFO L87 Difference]: Start difference. First operand 10744 states and 16921 transitions. Second operand 7 states.