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 -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:21:03,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:21:03,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:21:03,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:21:03,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:21:03,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:21:03,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:21:03,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:21:03,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:21:03,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:21:03,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:21:03,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:21:03,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:21:03,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:21:03,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:21:03,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:21:03,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:21:03,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:21:03,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:21:03,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:21:03,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:21:03,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:21:03,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:21:03,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:21:03,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:21:03,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:21:03,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:21:03,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:21:03,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:21:03,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:21:03,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:21:03,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:21:03,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:21:03,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:21:03,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:21:03,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:21:03,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:21:03,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:21:03,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:21:03,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:21:03,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:21:03,554 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:21:03,588 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:21:03,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:21:03,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:21:03,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:21:03,595 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:21:03,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:21:03,596 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:21:03,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:21:03,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:21:03,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:21:03,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:21:03,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:21:03,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:21:03,597 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:21:03,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:21:03,597 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:21:03,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:21:03,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:21:03,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:21:03,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:21:03,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:21:03,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:21:03,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:21:03,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:21:03,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:21:03,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:21:03,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:21:03,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:21:03,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:21:03,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:21:03,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:21:03,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:21:03,918 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:21:03,918 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:21:03,919 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product27.cil.c [2019-10-13 19:21:03,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39f45825f/8040c0daba3d4ab0b4be803f269ce137/FLAGafda45c2b [2019-10-13 19:21:04,617 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:21:04,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product27.cil.c [2019-10-13 19:21:04,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39f45825f/8040c0daba3d4ab0b4be803f269ce137/FLAGafda45c2b [2019-10-13 19:21:04,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39f45825f/8040c0daba3d4ab0b4be803f269ce137 [2019-10-13 19:21:04,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:21:04,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:21:04,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:21:04,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:21:04,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:21:04,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:21:04" (1/1) ... [2019-10-13 19:21:04,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5f41b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:04, skipping insertion in model container [2019-10-13 19:21:04,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:21:04" (1/1) ... [2019-10-13 19:21:04,903 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:21:04,989 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:21:05,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:21:05,781 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:21:06,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:21:06,099 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:21:06,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:06 WrapperNode [2019-10-13 19:21:06,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:21:06,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:21:06,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:21:06,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:21:06,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:06" (1/1) ... [2019-10-13 19:21:06,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:06" (1/1) ... [2019-10-13 19:21:06,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:06" (1/1) ... [2019-10-13 19:21:06,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:06" (1/1) ... [2019-10-13 19:21:06,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:06" (1/1) ... [2019-10-13 19:21:06,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:06" (1/1) ... [2019-10-13 19:21:06,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:06" (1/1) ... [2019-10-13 19:21:06,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:21:06,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:21:06,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:21:06,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:21:06,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:21:06,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:21:06,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:21:06,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:21:06,425 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:21:06,426 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:21:06,426 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:21:06,426 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:21:06,426 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:21:06,427 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:21:06,427 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:21:06,427 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:21:06,427 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:21:06,427 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:21:06,428 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:21:06,428 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:21:06,428 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:21:06,428 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:21:06,429 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:21:06,429 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:21:06,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:21:06,429 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:21:06,430 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:21:06,430 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:21:06,430 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:21:06,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:21:06,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:21:06,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:21:06,431 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:21:06,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:21:06,431 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:21:06,431 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:21:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:21:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:21:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:21:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:21:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:21:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:21:06,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:21:06,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:21:06,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:21:06,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:21:06,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:21:06,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:21:06,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:21:06,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:21:06,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:21:06,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:21:06,434 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:21:06,435 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:21:06,435 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:21:06,435 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:21:06,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:21:06,435 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:21:06,435 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:21:06,436 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:21:06,436 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 19:21:06,436 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:21:06,436 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:21:06,436 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:21:06,436 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:21:06,437 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:21:06,437 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:21:06,437 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:21:06,437 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:21:06,437 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:21:06,438 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:21:06,438 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:21:06,438 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:21:06,438 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:21:06,438 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:21:06,439 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:21:06,439 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:21:06,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:21:06,439 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:21:06,439 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:21:06,439 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:21:06,440 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:21:06,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 19:21:06,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 19:21:06,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:21:06,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:21:06,441 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:21:06,441 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:21:06,441 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:21:06,441 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:21:06,441 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:21:06,442 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:21:06,442 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:21:06,442 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:21:06,442 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:21:06,442 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:21:06,442 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:21:06,443 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:21:06,443 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:21:06,443 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:21:06,443 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:21:06,443 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:21:06,443 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:21:06,444 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:21:06,444 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:21:06,444 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:21:06,444 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:21:06,444 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:21:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:21:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:21:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:21:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:21:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:21:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:21:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:21:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:21:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:21:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:21:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:21:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:21:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:21:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:21:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:21:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:21:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:21:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:21:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:21:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:21:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:21:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:21:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:21:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:21:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:21:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:21:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:21:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:21:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:21:06,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:21:06,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:21:06,450 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:21:06,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:21:06,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:21:06,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:21:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:21:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:21:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:21:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:21:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:21:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:21:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:21:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:21:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:21:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:21:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:21:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:21:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:21:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:21:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 19:21:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 19:21:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:21:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:21:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 19:21:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:21:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:21:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:21:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:21:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:21:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:21:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:21:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:21:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:21:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:21:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:21:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:21:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:21:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:21:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:21:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:21:08,948 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:21:08,949 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:21:08,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:08 BoogieIcfgContainer [2019-10-13 19:21:08,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:21:08,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:21:08,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:21:08,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:21:08,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:21:04" (1/3) ... [2019-10-13 19:21:08,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dac4ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:08, skipping insertion in model container [2019-10-13 19:21:08,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:06" (2/3) ... [2019-10-13 19:21:08,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dac4ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:08, skipping insertion in model container [2019-10-13 19:21:08,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:08" (3/3) ... [2019-10-13 19:21:08,962 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product27.cil.c [2019-10-13 19:21:08,975 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:21:08,988 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:21:09,002 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:21:09,037 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:21:09,037 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:21:09,038 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:21:09,038 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:21:09,038 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:21:09,038 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:21:09,039 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:21:09,039 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:21:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states. [2019-10-13 19:21:09,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 19:21:09,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:09,127 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:09,131 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:09,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:09,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1141636338, now seen corresponding path program 1 times [2019-10-13 19:21:09,147 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:09,147 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141824007] [2019-10-13 19:21:09,148 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:09,148 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:09,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,860 WARN L191 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 391 [2019-10-13 19:21:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,146 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,411 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:21:11,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141824007] [2019-10-13 19:21:11,847 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743287038] [2019-10-13 19:21:11,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 3286 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:21:12,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 19:21:12,495 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:12,495 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2019-10-13 19:21:12,495 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904385174] [2019-10-13 19:21:12,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:21:12,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:12,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:21:12,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:21:12,517 INFO L87 Difference]: Start difference. First operand 787 states. Second operand 2 states. [2019-10-13 19:21:12,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:12,603 INFO L93 Difference]: Finished difference Result 670 states and 1061 transitions. [2019-10-13 19:21:12,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:21:12,604 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-10-13 19:21:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:12,657 INFO L225 Difference]: With dead ends: 670 [2019-10-13 19:21:12,658 INFO L226 Difference]: Without dead ends: 633 [2019-10-13 19:21:12,668 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:21:12,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-13 19:21:12,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2019-10-13 19:21:12,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2019-10-13 19:21:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1006 transitions. [2019-10-13 19:21:12,792 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1006 transitions. Word has length 164 [2019-10-13 19:21:12,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:12,796 INFO L462 AbstractCegarLoop]: Abstraction has 633 states and 1006 transitions. [2019-10-13 19:21:12,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:21:12,796 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1006 transitions. [2019-10-13 19:21:12,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 19:21:12,804 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:12,804 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:13,012 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:13,013 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:13,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:13,014 INFO L82 PathProgramCache]: Analyzing trace with hash -54443263, now seen corresponding path program 1 times [2019-10-13 19:21:13,014 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:13,015 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447877428] [2019-10-13 19:21:13,015 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:13,016 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:13,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,211 WARN L191 SmtUtils]: Spent 894.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-13 19:21:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,538 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,728 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:21:15,149 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447877428] [2019-10-13 19:21:15,149 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410020491] [2019-10-13 19:21:15,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:15,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:21:15,876 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:15,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:15,876 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930724828] [2019-10-13 19:21:15,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:15,878 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:15,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:15,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:15,879 INFO L87 Difference]: Start difference. First operand 633 states and 1006 transitions. Second operand 4 states. [2019-10-13 19:21:16,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:16,011 INFO L93 Difference]: Finished difference Result 1238 states and 1985 transitions. [2019-10-13 19:21:16,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:16,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-10-13 19:21:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:16,021 INFO L225 Difference]: With dead ends: 1238 [2019-10-13 19:21:16,021 INFO L226 Difference]: Without dead ends: 633 [2019-10-13 19:21:16,032 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:16,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-13 19:21:16,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2019-10-13 19:21:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2019-10-13 19:21:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1005 transitions. [2019-10-13 19:21:16,100 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1005 transitions. Word has length 166 [2019-10-13 19:21:16,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:16,102 INFO L462 AbstractCegarLoop]: Abstraction has 633 states and 1005 transitions. [2019-10-13 19:21:16,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:16,103 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1005 transitions. [2019-10-13 19:21:16,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 19:21:16,109 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:16,109 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:16,317 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:16,318 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:16,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:16,319 INFO L82 PathProgramCache]: Analyzing trace with hash 41360599, now seen corresponding path program 1 times [2019-10-13 19:21:16,319 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:16,320 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037230777] [2019-10-13 19:21:16,320 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:16,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:16,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,300 WARN L191 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-13 19:21:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,552 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,742 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:21:18,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037230777] [2019-10-13 19:21:18,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323546720] [2019-10-13 19:21:18,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:18,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:21:18,883 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:18,884 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:18,884 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304756415] [2019-10-13 19:21:18,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:18,885 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:18,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:18,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:18,886 INFO L87 Difference]: Start difference. First operand 633 states and 1005 transitions. Second operand 4 states. [2019-10-13 19:21:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:18,978 INFO L93 Difference]: Finished difference Result 1238 states and 1983 transitions. [2019-10-13 19:21:18,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:18,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2019-10-13 19:21:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:18,985 INFO L225 Difference]: With dead ends: 1238 [2019-10-13 19:21:18,985 INFO L226 Difference]: Without dead ends: 633 [2019-10-13 19:21:18,989 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-13 19:21:19,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2019-10-13 19:21:19,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2019-10-13 19:21:19,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1004 transitions. [2019-10-13 19:21:19,021 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1004 transitions. Word has length 168 [2019-10-13 19:21:19,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:19,022 INFO L462 AbstractCegarLoop]: Abstraction has 633 states and 1004 transitions. [2019-10-13 19:21:19,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:19,022 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1004 transitions. [2019-10-13 19:21:19,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 19:21:19,028 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:19,028 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:19,237 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:19,237 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:19,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:19,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1984965257, now seen corresponding path program 1 times [2019-10-13 19:21:19,238 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:19,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896270906] [2019-10-13 19:21:19,238 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:19,238 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:19,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,185 WARN L191 SmtUtils]: Spent 834.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-13 19:21:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,418 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,585 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:21:20,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896270906] [2019-10-13 19:21:20,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224778309] [2019-10-13 19:21:20,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 3293 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:21,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:21:21,648 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:21,649 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:21,649 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776338074] [2019-10-13 19:21:21,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:21,650 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:21,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:21,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:21,652 INFO L87 Difference]: Start difference. First operand 633 states and 1004 transitions. Second operand 4 states. [2019-10-13 19:21:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:21,751 INFO L93 Difference]: Finished difference Result 1245 states and 1990 transitions. [2019-10-13 19:21:21,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:21,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-10-13 19:21:21,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:21,760 INFO L225 Difference]: With dead ends: 1245 [2019-10-13 19:21:21,760 INFO L226 Difference]: Without dead ends: 642 [2019-10-13 19:21:21,764 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:21,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-13 19:21:21,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-13 19:21:21,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-13 19:21:21,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1016 transitions. [2019-10-13 19:21:21,846 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1016 transitions. Word has length 170 [2019-10-13 19:21:21,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:21,847 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1016 transitions. [2019-10-13 19:21:21,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:21,847 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1016 transitions. [2019-10-13 19:21:21,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 19:21:21,853 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:21,854 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:22,062 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:22,062 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:22,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:22,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1663399092, now seen corresponding path program 1 times [2019-10-13 19:21:22,064 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:22,064 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784375363] [2019-10-13 19:21:22,064 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:22,064 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:22,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,972 WARN L191 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-13 19:21:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,238 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,408 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,818 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:21:23,818 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784375363] [2019-10-13 19:21:23,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47494971] [2019-10-13 19:21:23,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 3294 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:24,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:21:24,415 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:24,416 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:24,416 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139814528] [2019-10-13 19:21:24,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:24,417 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:24,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:24,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:24,419 INFO L87 Difference]: Start difference. First operand 642 states and 1016 transitions. Second operand 4 states. [2019-10-13 19:21:24,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:24,507 INFO L93 Difference]: Finished difference Result 1247 states and 1991 transitions. [2019-10-13 19:21:24,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:24,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-10-13 19:21:24,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:24,513 INFO L225 Difference]: With dead ends: 1247 [2019-10-13 19:21:24,513 INFO L226 Difference]: Without dead ends: 642 [2019-10-13 19:21:24,516 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:24,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-13 19:21:24,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-13 19:21:24,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-13 19:21:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1015 transitions. [2019-10-13 19:21:24,540 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1015 transitions. Word has length 171 [2019-10-13 19:21:24,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:24,540 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1015 transitions. [2019-10-13 19:21:24,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:24,540 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1015 transitions. [2019-10-13 19:21:24,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-13 19:21:24,545 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:24,546 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:24,750 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:24,751 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:24,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:24,752 INFO L82 PathProgramCache]: Analyzing trace with hash 424078317, now seen corresponding path program 1 times [2019-10-13 19:21:24,752 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:24,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971553044] [2019-10-13 19:21:24,753 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:24,753 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:24,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,983 WARN L191 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 391 [2019-10-13 19:21:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,227 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,420 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:21:27,055 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971553044] [2019-10-13 19:21:27,055 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877113750] [2019-10-13 19:21:27,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 3295 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:27,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:21:27,652 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:27,652 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:27,652 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423539934] [2019-10-13 19:21:27,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:27,654 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:27,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:27,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:27,654 INFO L87 Difference]: Start difference. First operand 642 states and 1015 transitions. Second operand 4 states. [2019-10-13 19:21:27,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:27,737 INFO L93 Difference]: Finished difference Result 1247 states and 1990 transitions. [2019-10-13 19:21:27,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:27,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-10-13 19:21:27,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:27,744 INFO L225 Difference]: With dead ends: 1247 [2019-10-13 19:21:27,744 INFO L226 Difference]: Without dead ends: 642 [2019-10-13 19:21:27,747 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-13 19:21:27,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-13 19:21:27,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-13 19:21:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1014 transitions. [2019-10-13 19:21:27,771 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1014 transitions. Word has length 172 [2019-10-13 19:21:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:27,771 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1014 transitions. [2019-10-13 19:21:27,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1014 transitions. [2019-10-13 19:21:27,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 19:21:27,776 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:27,776 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:27,990 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:27,991 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:27,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:27,991 INFO L82 PathProgramCache]: Analyzing trace with hash 799135704, now seen corresponding path program 1 times [2019-10-13 19:21:27,992 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:27,992 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243551078] [2019-10-13 19:21:27,992 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:27,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:27,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,079 WARN L191 SmtUtils]: Spent 971.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-13 19:21:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,352 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,517 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:21:29,960 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243551078] [2019-10-13 19:21:29,960 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416511946] [2019-10-13 19:21:29,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:30,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:30,605 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:21:30,605 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:30,605 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-10-13 19:21:30,607 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665058539] [2019-10-13 19:21:30,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:30,608 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:30,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:30,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:21:30,609 INFO L87 Difference]: Start difference. First operand 642 states and 1014 transitions. Second operand 4 states. [2019-10-13 19:21:30,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:30,800 INFO L93 Difference]: Finished difference Result 1246 states and 1990 transitions. [2019-10-13 19:21:30,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:30,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2019-10-13 19:21:30,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:30,806 INFO L225 Difference]: With dead ends: 1246 [2019-10-13 19:21:30,806 INFO L226 Difference]: Without dead ends: 642 [2019-10-13 19:21:30,810 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:21:30,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-13 19:21:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-13 19:21:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-13 19:21:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1009 transitions. [2019-10-13 19:21:30,838 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1009 transitions. Word has length 173 [2019-10-13 19:21:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:30,838 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1009 transitions. [2019-10-13 19:21:30,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:30,839 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1009 transitions. [2019-10-13 19:21:30,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 19:21:30,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:30,844 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:31,052 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:31,053 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:31,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:31,054 INFO L82 PathProgramCache]: Analyzing trace with hash 524690856, now seen corresponding path program 1 times [2019-10-13 19:21:31,055 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:31,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40186578] [2019-10-13 19:21:31,055 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:31,056 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:31,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,284 WARN L191 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 391 [2019-10-13 19:21:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,586 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,760 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:21:33,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40186578] [2019-10-13 19:21:33,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414312980] [2019-10-13 19:21:33,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:33,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 3298 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:33,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:21:33,827 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:33,827 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2019-10-13 19:21:33,827 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895700024] [2019-10-13 19:21:33,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:33,828 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:33,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:33,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:21:33,829 INFO L87 Difference]: Start difference. First operand 642 states and 1009 transitions. Second operand 4 states. [2019-10-13 19:21:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:34,013 INFO L93 Difference]: Finished difference Result 1246 states and 1980 transitions. [2019-10-13 19:21:34,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:34,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2019-10-13 19:21:34,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:34,023 INFO L225 Difference]: With dead ends: 1246 [2019-10-13 19:21:34,023 INFO L226 Difference]: Without dead ends: 642 [2019-10-13 19:21:34,027 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:21:34,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-10-13 19:21:34,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-10-13 19:21:34,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-13 19:21:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1004 transitions. [2019-10-13 19:21:34,055 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1004 transitions. Word has length 175 [2019-10-13 19:21:34,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:34,055 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1004 transitions. [2019-10-13 19:21:34,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:34,056 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1004 transitions. [2019-10-13 19:21:34,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 19:21:34,061 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:34,061 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:34,269 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:34,269 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:34,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:34,270 INFO L82 PathProgramCache]: Analyzing trace with hash 493279630, now seen corresponding path program 1 times [2019-10-13 19:21:34,270 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:34,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992580099] [2019-10-13 19:21:34,271 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:34,272 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:34,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,380 WARN L191 SmtUtils]: Spent 948.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-13 19:21:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,687 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,867 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 19:21:36,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992580099] [2019-10-13 19:21:36,565 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702410920] [2019-10-13 19:21:36,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 3300 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:37,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:21:37,244 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:37,245 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [25] total 27 [2019-10-13 19:21:37,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472305048] [2019-10-13 19:21:37,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:37,246 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:37,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:37,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:21:37,246 INFO L87 Difference]: Start difference. First operand 642 states and 1004 transitions. Second operand 4 states. [2019-10-13 19:21:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:37,516 INFO L93 Difference]: Finished difference Result 1282 states and 2029 transitions. [2019-10-13 19:21:37,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:37,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-13 19:21:37,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:37,529 INFO L225 Difference]: With dead ends: 1282 [2019-10-13 19:21:37,530 INFO L226 Difference]: Without dead ends: 681 [2019-10-13 19:21:37,534 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 19:21:37,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2019-10-13 19:21:37,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2019-10-13 19:21:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2019-10-13 19:21:37,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1068 transitions. [2019-10-13 19:21:37,571 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1068 transitions. Word has length 177 [2019-10-13 19:21:37,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:37,571 INFO L462 AbstractCegarLoop]: Abstraction has 681 states and 1068 transitions. [2019-10-13 19:21:37,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:37,572 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1068 transitions. [2019-10-13 19:21:37,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-13 19:21:37,578 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:37,579 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:37,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:37,783 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:37,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:37,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1246954601, now seen corresponding path program 1 times [2019-10-13 19:21:37,784 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:37,784 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086876818] [2019-10-13 19:21:37,784 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:37,784 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:37,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat