java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:07:33,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:07:33,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:07:33,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:07:33,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:07:33,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:07:33,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:07:33,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:07:33,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:07:33,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:07:33,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:07:33,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:07:33,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:07:33,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:07:33,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:07:33,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:07:33,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:07:33,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:07:33,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:07:33,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:07:33,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:07:33,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:07:33,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:07:33,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:07:33,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:07:33,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:07:33,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:07:33,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:07:33,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:07:33,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:07:33,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:07:33,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:07:33,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:07:33,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:07:33,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:07:33,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:07:33,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:07:33,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:07:33,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:07:33,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:07:33,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:07:33,742 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:07:33,756 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:07:33,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:07:33,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:07:33,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:07:33,759 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:07:33,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:07:33,759 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:07:33,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:07:33,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:07:33,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:07:33,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:07:33,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:07:33,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:07:33,760 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:07:33,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:07:33,761 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:07:33,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:07:33,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:07:33,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:07:33,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:07:33,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:07:33,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:07:33,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:07:33,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:07:33,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:07:33,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:07:33,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:07:33,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:07:33,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:07:34,050 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:07:34,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:07:34,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:07:34,068 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:07:34,068 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:07:34,069 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c [2019-10-15 01:07:34,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b36ff9983/aef592195b944b4ea8eeec6d5fa17b13/FLAG67360a000 [2019-10-15 01:07:34,835 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:07:34,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c [2019-10-15 01:07:34,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b36ff9983/aef592195b944b4ea8eeec6d5fa17b13/FLAG67360a000 [2019-10-15 01:07:34,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b36ff9983/aef592195b944b4ea8eeec6d5fa17b13 [2019-10-15 01:07:34,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:07:34,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:07:34,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:07:34,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:07:34,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:07:34,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:07:34" (1/1) ... [2019-10-15 01:07:34,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e9ca86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:34, skipping insertion in model container [2019-10-15 01:07:34,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:07:34" (1/1) ... [2019-10-15 01:07:34,974 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:07:35,068 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:07:35,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:07:35,848 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:07:36,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:07:36,099 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:07:36,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:36 WrapperNode [2019-10-15 01:07:36,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:07:36,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:07:36,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:07:36,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:07:36,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:36" (1/1) ... [2019-10-15 01:07:36,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:36" (1/1) ... [2019-10-15 01:07:36,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:36" (1/1) ... [2019-10-15 01:07:36,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:36" (1/1) ... [2019-10-15 01:07:36,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:36" (1/1) ... [2019-10-15 01:07:36,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:36" (1/1) ... [2019-10-15 01:07:36,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:36" (1/1) ... [2019-10-15 01:07:36,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:07:36,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:07:36,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:07:36,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:07:36,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:07:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:07:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:07:36,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:07:36,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:07:36,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:07:36,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:07:36,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:07:36,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:07:36,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:07:36,421 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:07:36,422 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:07:36,422 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:07:36,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:07:36,422 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:07:36,423 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:07:36,423 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:07:36,423 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:07:36,423 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:07:36,423 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:07:36,424 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:07:36,424 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:07:36,425 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:07:36,425 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:07:36,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:07:36,426 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:07:36,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:07:36,426 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:07:36,426 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:07:36,426 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:07:36,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:07:36,427 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:07:36,427 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:07:36,427 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:07:36,427 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:07:36,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:07:36,428 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:07:36,428 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 01:07:36,428 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:07:36,428 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 01:07:36,428 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:07:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:07:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:07:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:07:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:07:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:07:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:07:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:07:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:07:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:07:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:07:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:07:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:07:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:07:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:07:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:07:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:07:36,432 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:07:36,432 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:07:36,432 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:07:36,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:07:36,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:07:36,432 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:07:36,433 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:07:36,433 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:07:36,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:07:36,433 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:07:36,433 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:07:36,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:07:36,434 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:07:36,434 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:07:36,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:07:36,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-15 01:07:36,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-15 01:07:36,435 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:07:36,435 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:07:36,435 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:07:36,435 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:07:36,435 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:07:36,436 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:07:36,436 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:07:36,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:07:36,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:07:36,436 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:07:36,437 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:07:36,437 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:07:36,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:07:36,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:07:36,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:07:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:07:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:07:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:07:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:07:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:07:36,439 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:07:36,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:07:36,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:07:36,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:07:36,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:07:36,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:07:36,440 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:07:36,440 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:07:36,440 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:07:36,440 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:07:36,440 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:07:36,440 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:07:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:07:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:07:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:07:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:07:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:07:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:07:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:07:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:07:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:07:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:07:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:07:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:07:36,442 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:07:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:07:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:07:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:07:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:07:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:07:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:07:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:07:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:07:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:07:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:07:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:07:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:07:36,444 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:07:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:07:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:07:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:07:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:07:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:07:36,445 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:07:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:07:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:07:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:07:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:07:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:07:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:07:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:07:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 01:07:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-15 01:07:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-15 01:07:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 01:07:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:07:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:07:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:07:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:07:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:07:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:07:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:07:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:07:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:07:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:07:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:07:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:07:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:07:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:07:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:07:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:07:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:07:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:07:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:07:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:07:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:07:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:07:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:07:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:07:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:07:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:07:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:07:38,756 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:07:38,756 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:07:38,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:07:38 BoogieIcfgContainer [2019-10-15 01:07:38,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:07:38,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:07:38,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:07:38,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:07:38,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:07:34" (1/3) ... [2019-10-15 01:07:38,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a25cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:07:38, skipping insertion in model container [2019-10-15 01:07:38,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:07:36" (2/3) ... [2019-10-15 01:07:38,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a25cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:07:38, skipping insertion in model container [2019-10-15 01:07:38,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:07:38" (3/3) ... [2019-10-15 01:07:38,767 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2019-10-15 01:07:38,779 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:07:38,789 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:07:38,802 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:07:38,836 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:07:38,836 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:07:38,837 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:07:38,837 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:07:38,837 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:07:38,837 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:07:38,837 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:07:38,837 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:07:38,875 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states. [2019-10-15 01:07:38,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 01:07:38,894 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:38,896 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:07:38,898 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:38,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:38,905 INFO L82 PathProgramCache]: Analyzing trace with hash -270219278, now seen corresponding path program 1 times [2019-10-15 01:07:38,916 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:38,917 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139667123] [2019-10-15 01:07:38,917 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:38,917 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:38,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:39,560 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139667123] [2019-10-15 01:07:39,561 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597980947] [2019-10-15 01:07:39,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:40,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 2890 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-15 01:07:40,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:07:40,255 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:40,370 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:40,371 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7, 2] total 7 [2019-10-15 01:07:40,371 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706074774] [2019-10-15 01:07:40,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:07:40,382 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:40,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:07:40,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:40,400 INFO L87 Difference]: Start difference. First operand 835 states. Second operand 2 states. [2019-10-15 01:07:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:40,574 INFO L93 Difference]: Finished difference Result 1349 states and 2167 transitions. [2019-10-15 01:07:40,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:07:40,576 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 113 [2019-10-15 01:07:40,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:40,615 INFO L225 Difference]: With dead ends: 1349 [2019-10-15 01:07:40,615 INFO L226 Difference]: Without dead ends: 682 [2019-10-15 01:07:40,628 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-10-15 01:07:40,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-10-15 01:07:40,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-10-15 01:07:40,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1075 transitions. [2019-10-15 01:07:40,773 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1075 transitions. Word has length 113 [2019-10-15 01:07:40,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:40,776 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1075 transitions. [2019-10-15 01:07:40,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:07:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1075 transitions. [2019-10-15 01:07:40,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 01:07:40,784 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:40,784 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:07:40,993 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:40,993 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:40,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:40,995 INFO L82 PathProgramCache]: Analyzing trace with hash 536745362, now seen corresponding path program 1 times [2019-10-15 01:07:40,995 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:40,996 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209429644] [2019-10-15 01:07:40,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:40,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:40,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:41,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209429644] [2019-10-15 01:07:41,320 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176846144] [2019-10-15 01:07:41,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:41,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:41,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:07:41,935 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:42,132 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:42,132 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 01:07:42,133 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422712825] [2019-10-15 01:07:42,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:07:42,134 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:42,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:07:42,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:07:42,135 INFO L87 Difference]: Start difference. First operand 682 states and 1075 transitions. Second operand 4 states. [2019-10-15 01:07:42,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:42,266 INFO L93 Difference]: Finished difference Result 1347 states and 2140 transitions. [2019-10-15 01:07:42,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:42,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-10-15 01:07:42,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:42,275 INFO L225 Difference]: With dead ends: 1347 [2019-10-15 01:07:42,275 INFO L226 Difference]: Without dead ends: 691 [2019-10-15 01:07:42,280 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:07:42,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-10-15 01:07:42,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2019-10-15 01:07:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2019-10-15 01:07:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1089 transitions. [2019-10-15 01:07:42,320 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1089 transitions. Word has length 113 [2019-10-15 01:07:42,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:42,321 INFO L462 AbstractCegarLoop]: Abstraction has 691 states and 1089 transitions. [2019-10-15 01:07:42,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:07:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1089 transitions. [2019-10-15 01:07:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-15 01:07:42,325 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:42,325 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:07:42,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:42,534 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:42,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1841317292, now seen corresponding path program 1 times [2019-10-15 01:07:42,535 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:42,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816398352] [2019-10-15 01:07:42,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:42,536 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:42,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:07:42,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816398352] [2019-10-15 01:07:42,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351988680] [2019-10-15 01:07:42,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:43,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:07:43,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:07:43,378 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:07:43,656 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:43,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:07:43,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50725199] [2019-10-15 01:07:43,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:07:43,658 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:43,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:07:43,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:07:43,659 INFO L87 Difference]: Start difference. First operand 691 states and 1089 transitions. Second operand 7 states. [2019-10-15 01:07:43,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:43,843 INFO L93 Difference]: Finished difference Result 1365 states and 2165 transitions. [2019-10-15 01:07:43,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:07:43,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-15 01:07:43,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:43,854 INFO L225 Difference]: With dead ends: 1365 [2019-10-15 01:07:43,854 INFO L226 Difference]: Without dead ends: 702 [2019-10-15 01:07:43,858 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 220 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:07:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-15 01:07:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 698. [2019-10-15 01:07:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2019-10-15 01:07:43,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1101 transitions. [2019-10-15 01:07:43,912 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1101 transitions. Word has length 115 [2019-10-15 01:07:43,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:43,913 INFO L462 AbstractCegarLoop]: Abstraction has 698 states and 1101 transitions. [2019-10-15 01:07:43,913 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:07:43,913 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1101 transitions. [2019-10-15 01:07:43,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-15 01:07:43,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:43,920 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:07:44,134 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:44,135 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:44,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:44,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1924153805, now seen corresponding path program 1 times [2019-10-15 01:07:44,135 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:44,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960795068] [2019-10-15 01:07:44,136 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:44,136 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:44,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:44,256 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960795068] [2019-10-15 01:07:44,256 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828822731] [2019-10-15 01:07:44,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:45,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:45,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:07:45,047 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:45,196 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:45,196 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 01:07:45,196 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298398049] [2019-10-15 01:07:45,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:07:45,197 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:45,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:07:45,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:45,199 INFO L87 Difference]: Start difference. First operand 698 states and 1101 transitions. Second operand 4 states. [2019-10-15 01:07:45,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:45,304 INFO L93 Difference]: Finished difference Result 1381 states and 2190 transitions. [2019-10-15 01:07:45,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:45,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-10-15 01:07:45,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:45,316 INFO L225 Difference]: With dead ends: 1381 [2019-10-15 01:07:45,320 INFO L226 Difference]: Without dead ends: 709 [2019-10-15 01:07:45,324 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 228 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:07:45,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2019-10-15 01:07:45,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 707. [2019-10-15 01:07:45,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-10-15 01:07:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1109 transitions. [2019-10-15 01:07:45,353 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1109 transitions. Word has length 116 [2019-10-15 01:07:45,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:45,353 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 1109 transitions. [2019-10-15 01:07:45,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:07:45,354 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1109 transitions. [2019-10-15 01:07:45,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-15 01:07:45,357 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:45,357 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:07:45,569 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:45,570 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:45,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:45,570 INFO L82 PathProgramCache]: Analyzing trace with hash 546326437, now seen corresponding path program 1 times [2019-10-15 01:07:45,570 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:45,571 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92593659] [2019-10-15 01:07:45,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:45,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:45,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:07:45,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92593659] [2019-10-15 01:07:45,697 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877113750] [2019-10-15 01:07:45,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:46,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:07:46,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:07:46,337 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:07:46,543 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:46,544 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:07:46,544 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891129905] [2019-10-15 01:07:46,545 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:07:46,546 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:46,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:07:46,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:07:46,547 INFO L87 Difference]: Start difference. First operand 707 states and 1109 transitions. Second operand 7 states. [2019-10-15 01:07:46,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:46,711 INFO L93 Difference]: Finished difference Result 1382 states and 2181 transitions. [2019-10-15 01:07:46,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:07:46,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-10-15 01:07:46,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:46,718 INFO L225 Difference]: With dead ends: 1382 [2019-10-15 01:07:46,719 INFO L226 Difference]: Without dead ends: 716 [2019-10-15 01:07:46,723 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 222 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:07:46,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2019-10-15 01:07:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 707. [2019-10-15 01:07:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-10-15 01:07:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1109 transitions. [2019-10-15 01:07:46,758 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1109 transitions. Word has length 116 [2019-10-15 01:07:46,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:46,759 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 1109 transitions. [2019-10-15 01:07:46,759 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:07:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1109 transitions. [2019-10-15 01:07:46,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 01:07:46,761 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:46,762 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:07:46,969 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:46,970 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:46,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:46,970 INFO L82 PathProgramCache]: Analyzing trace with hash 736421213, now seen corresponding path program 1 times [2019-10-15 01:07:46,971 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:46,971 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978422038] [2019-10-15 01:07:46,971 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:46,971 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:46,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:47,102 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978422038] [2019-10-15 01:07:47,102 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521832164] [2019-10-15 01:07:47,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:47,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:47,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:07:47,808 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:07:47,916 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:07:47,917 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 01:07:47,917 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094752453] [2019-10-15 01:07:47,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:07:47,919 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:47,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:07:47,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:47,920 INFO L87 Difference]: Start difference. First operand 707 states and 1109 transitions. Second operand 4 states. [2019-10-15 01:07:48,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:48,399 INFO L93 Difference]: Finished difference Result 1415 states and 2251 transitions. [2019-10-15 01:07:48,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:48,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-15 01:07:48,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:48,410 INFO L225 Difference]: With dead ends: 1415 [2019-10-15 01:07:48,410 INFO L226 Difference]: Without dead ends: 749 [2019-10-15 01:07:48,416 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 234 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:07:48,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2019-10-15 01:07:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 746. [2019-10-15 01:07:48,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-10-15 01:07:48,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1182 transitions. [2019-10-15 01:07:48,460 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1182 transitions. Word has length 119 [2019-10-15 01:07:48,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:48,461 INFO L462 AbstractCegarLoop]: Abstraction has 746 states and 1182 transitions. [2019-10-15 01:07:48,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:07:48,461 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1182 transitions. [2019-10-15 01:07:48,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 01:07:48,465 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:48,466 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:07:48,685 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:48,686 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:48,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:48,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1108082173, now seen corresponding path program 1 times [2019-10-15 01:07:48,687 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:48,687 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890405714] [2019-10-15 01:07:48,687 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:48,688 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:48,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:48,832 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890405714] [2019-10-15 01:07:48,832 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617022626] [2019-10-15 01:07:48,832 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 [2019-10-15 01:07:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:49,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:49,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:07:49,438 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:49,536 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:49,536 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2019-10-15 01:07:49,536 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828700536] [2019-10-15 01:07:49,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:07:49,537 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:49,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:07:49,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:49,538 INFO L87 Difference]: Start difference. First operand 746 states and 1182 transitions. Second operand 5 states. [2019-10-15 01:07:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:49,633 INFO L93 Difference]: Finished difference Result 1439 states and 2297 transitions. [2019-10-15 01:07:49,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:49,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2019-10-15 01:07:49,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:49,640 INFO L225 Difference]: With dead ends: 1439 [2019-10-15 01:07:49,641 INFO L226 Difference]: Without dead ends: 746 [2019-10-15 01:07:49,645 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:07:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2019-10-15 01:07:49,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2019-10-15 01:07:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-10-15 01:07:49,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1177 transitions. [2019-10-15 01:07:49,676 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1177 transitions. Word has length 121 [2019-10-15 01:07:49,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:49,676 INFO L462 AbstractCegarLoop]: Abstraction has 746 states and 1177 transitions. [2019-10-15 01:07:49,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:07:49,677 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1177 transitions. [2019-10-15 01:07:49,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-15 01:07:49,679 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:49,679 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:07:49,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:49,897 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:49,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:49,897 INFO L82 PathProgramCache]: Analyzing trace with hash -546984174, now seen corresponding path program 1 times [2019-10-15 01:07:49,898 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:49,898 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629355024] [2019-10-15 01:07:49,898 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:49,898 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:49,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:50,026 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629355024] [2019-10-15 01:07:50,026 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414670893] [2019-10-15 01:07:50,026 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 [2019-10-15 01:07:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:50,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 2892 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:07:50,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:50,622 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:07:50,623 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:07:50,877 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:50,877 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [4] total 13 [2019-10-15 01:07:50,877 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569282724] [2019-10-15 01:07:50,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:07:50,878 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:50,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:07:50,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:07:50,879 INFO L87 Difference]: Start difference. First operand 746 states and 1177 transitions. Second operand 11 states. [2019-10-15 01:07:51,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:51,060 INFO L93 Difference]: Finished difference Result 1413 states and 2238 transitions. [2019-10-15 01:07:51,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:07:51,060 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 122 [2019-10-15 01:07:51,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:51,067 INFO L225 Difference]: With dead ends: 1413 [2019-10-15 01:07:51,068 INFO L226 Difference]: Without dead ends: 766 [2019-10-15 01:07:51,072 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 235 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:07:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2019-10-15 01:07:51,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 753. [2019-10-15 01:07:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-10-15 01:07:51,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1188 transitions. [2019-10-15 01:07:51,104 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1188 transitions. Word has length 122 [2019-10-15 01:07:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:51,105 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 1188 transitions. [2019-10-15 01:07:51,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:07:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1188 transitions. [2019-10-15 01:07:51,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-15 01:07:51,107 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:51,108 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:07:51,315 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:51,315 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:51,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:51,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1594119675, now seen corresponding path program 1 times [2019-10-15 01:07:51,317 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:51,317 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599935464] [2019-10-15 01:07:51,317 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:51,317 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:51,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:07:51,441 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599935464] [2019-10-15 01:07:51,441 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208320656] [2019-10-15 01:07:51,441 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 [2019-10-15 01:07:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:52,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:07:52,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:07:52,135 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:07:52,356 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:52,356 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [4] total 10 [2019-10-15 01:07:52,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199626372] [2019-10-15 01:07:52,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:07:52,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:52,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:07:52,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:07:52,359 INFO L87 Difference]: Start difference. First operand 753 states and 1188 transitions. Second operand 8 states. [2019-10-15 01:07:52,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:52,518 INFO L93 Difference]: Finished difference Result 1411 states and 2234 transitions. [2019-10-15 01:07:52,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:07:52,519 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2019-10-15 01:07:52,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:52,525 INFO L225 Difference]: With dead ends: 1411 [2019-10-15 01:07:52,525 INFO L226 Difference]: Without dead ends: 764 [2019-10-15 01:07:52,529 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 237 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:07:52,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2019-10-15 01:07:52,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 757. [2019-10-15 01:07:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2019-10-15 01:07:52,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1193 transitions. [2019-10-15 01:07:52,565 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1193 transitions. Word has length 123 [2019-10-15 01:07:52,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:52,565 INFO L462 AbstractCegarLoop]: Abstraction has 757 states and 1193 transitions. [2019-10-15 01:07:52,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:07:52,566 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1193 transitions. [2019-10-15 01:07:52,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 01:07:52,568 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:52,569 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:07:52,785 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:52,785 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:52,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:52,786 INFO L82 PathProgramCache]: Analyzing trace with hash -478392882, now seen corresponding path program 1 times [2019-10-15 01:07:52,787 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:52,787 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431448626] [2019-10-15 01:07:52,787 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:52,787 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:52,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:07:52,966 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431448626] [2019-10-15 01:07:52,966 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726497928] [2019-10-15 01:07:52,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:53,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:53,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:53,525 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 01:07:53,639 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:53,639 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2019-10-15 01:07:53,639 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237256328] [2019-10-15 01:07:53,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:07:53,640 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:53,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:07:53,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:07:53,641 INFO L87 Difference]: Start difference. First operand 757 states and 1193 transitions. Second operand 5 states. [2019-10-15 01:07:53,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:53,846 INFO L93 Difference]: Finished difference Result 1449 states and 2311 transitions. [2019-10-15 01:07:53,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:53,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2019-10-15 01:07:53,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:53,853 INFO L225 Difference]: With dead ends: 1449 [2019-10-15 01:07:53,853 INFO L226 Difference]: Without dead ends: 802 [2019-10-15 01:07:53,858 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 245 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:07:53,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2019-10-15 01:07:53,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 799. [2019-10-15 01:07:53,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2019-10-15 01:07:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1269 transitions. [2019-10-15 01:07:53,891 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1269 transitions. Word has length 124 [2019-10-15 01:07:53,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:53,892 INFO L462 AbstractCegarLoop]: Abstraction has 799 states and 1269 transitions. [2019-10-15 01:07:53,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:07:53,892 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1269 transitions. [2019-10-15 01:07:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 01:07:53,895 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:53,895 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:07:54,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:54,106 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:54,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:54,106 INFO L82 PathProgramCache]: Analyzing trace with hash -862024985, now seen corresponding path program 1 times [2019-10-15 01:07:54,107 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:54,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310804308] [2019-10-15 01:07:54,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:54,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:54,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:54,212 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310804308] [2019-10-15 01:07:54,212 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413831461] [2019-10-15 01:07:54,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:54,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 2895 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:07:54,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:07:54,925 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:55,030 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:55,030 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 8 [2019-10-15 01:07:55,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780418533] [2019-10-15 01:07:55,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:07:55,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:55,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:07:55,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:07:55,032 INFO L87 Difference]: Start difference. First operand 799 states and 1269 transitions. Second operand 6 states. [2019-10-15 01:07:55,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:55,125 INFO L93 Difference]: Finished difference Result 1503 states and 2396 transitions. [2019-10-15 01:07:55,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:07:55,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2019-10-15 01:07:55,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:55,134 INFO L225 Difference]: With dead ends: 1503 [2019-10-15 01:07:55,134 INFO L226 Difference]: Without dead ends: 795 [2019-10-15 01:07:55,138 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:07:55,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2019-10-15 01:07:55,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 792. [2019-10-15 01:07:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2019-10-15 01:07:55,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1256 transitions. [2019-10-15 01:07:55,172 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1256 transitions. Word has length 125 [2019-10-15 01:07:55,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:55,173 INFO L462 AbstractCegarLoop]: Abstraction has 792 states and 1256 transitions. [2019-10-15 01:07:55,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:07:55,173 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1256 transitions. [2019-10-15 01:07:55,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 01:07:55,175 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:55,176 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:07:55,384 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:55,385 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:55,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:55,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1453671361, now seen corresponding path program 1 times [2019-10-15 01:07:55,385 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:55,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590775580] [2019-10-15 01:07:55,385 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:55,386 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:55,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:07:55,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590775580] [2019-10-15 01:07:55,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358716454] [2019-10-15 01:07:55,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:56,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 2895 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 01:07:56,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:56,092 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:07:56,092 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:07:56,236 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:56,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-10-15 01:07:56,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099904229] [2019-10-15 01:07:56,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:07:56,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:56,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:07:56,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:07:56,239 INFO L87 Difference]: Start difference. First operand 792 states and 1256 transitions. Second operand 4 states. [2019-10-15 01:07:57,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:57,502 INFO L93 Difference]: Finished difference Result 2711 states and 4355 transitions. [2019-10-15 01:07:57,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:07:57,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-15 01:07:57,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:57,518 INFO L225 Difference]: With dead ends: 2711 [2019-10-15 01:07:57,518 INFO L226 Difference]: Without dead ends: 2068 [2019-10-15 01:07:57,523 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 246 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:07:57,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2019-10-15 01:07:57,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1926. [2019-10-15 01:07:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1926 states. [2019-10-15 01:07:57,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1926 states to 1926 states and 3096 transitions. [2019-10-15 01:07:57,608 INFO L78 Accepts]: Start accepts. Automaton has 1926 states and 3096 transitions. Word has length 126 [2019-10-15 01:07:57,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:57,608 INFO L462 AbstractCegarLoop]: Abstraction has 1926 states and 3096 transitions. [2019-10-15 01:07:57,609 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:07:57,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1926 states and 3096 transitions. [2019-10-15 01:07:57,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-15 01:07:57,618 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:57,619 INFO L380 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:07:57,827 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:57,828 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:07:57,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:07:57,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1845942584, now seen corresponding path program 1 times [2019-10-15 01:07:57,828 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:07:57,829 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224910882] [2019-10-15 01:07:57,829 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:57,829 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:07:57,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:07:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:57,944 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:07:57,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224910882] [2019-10-15 01:07:57,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009219300] [2019-10-15 01:07:57,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:07:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:07:58,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 3270 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-15 01:07:58,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:07:58,679 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:07:58,680 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:07:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:07:58,890 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:07:58,890 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [4] total 9 [2019-10-15 01:07:58,890 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651101066] [2019-10-15 01:07:58,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:07:58,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:07:58,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:07:58,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:07:58,892 INFO L87 Difference]: Start difference. First operand 1926 states and 3096 transitions. Second operand 7 states. [2019-10-15 01:07:59,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:07:59,690 INFO L93 Difference]: Finished difference Result 4353 states and 7002 transitions. [2019-10-15 01:07:59,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:07:59,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2019-10-15 01:07:59,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:07:59,709 INFO L225 Difference]: With dead ends: 4353 [2019-10-15 01:07:59,709 INFO L226 Difference]: Without dead ends: 2576 [2019-10-15 01:07:59,719 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 355 SyntacticMatches, 9 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:07:59,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2019-10-15 01:07:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2572. [2019-10-15 01:07:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2572 states. [2019-10-15 01:07:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 4110 transitions. [2019-10-15 01:07:59,844 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 4110 transitions. Word has length 184 [2019-10-15 01:07:59,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:07:59,845 INFO L462 AbstractCegarLoop]: Abstraction has 2572 states and 4110 transitions. [2019-10-15 01:07:59,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:07:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 4110 transitions. [2019-10-15 01:07:59,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-15 01:07:59,853 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:07:59,854 INFO L380 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:00,061 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:00,062 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:00,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:00,062 INFO L82 PathProgramCache]: Analyzing trace with hash -3278018, now seen corresponding path program 1 times [2019-10-15 01:08:00,062 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:00,062 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965258856] [2019-10-15 01:08:00,063 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:00,063 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:00,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:08:00,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965258856] [2019-10-15 01:08:00,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613916166] [2019-10-15 01:08:00,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:00,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:00,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:08:00,884 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:01,300 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:01,300 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 11 [2019-10-15 01:08:01,300 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629785614] [2019-10-15 01:08:01,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:01,301 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:01,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:01,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:01,302 INFO L87 Difference]: Start difference. First operand 2572 states and 4110 transitions. Second operand 5 states. [2019-10-15 01:08:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:02,395 INFO L93 Difference]: Finished difference Result 5035 states and 8238 transitions. [2019-10-15 01:08:02,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:02,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2019-10-15 01:08:02,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:02,414 INFO L225 Difference]: With dead ends: 5035 [2019-10-15 01:08:02,414 INFO L226 Difference]: Without dead ends: 2612 [2019-10-15 01:08:02,426 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 359 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:08:02,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2019-10-15 01:08:02,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 2612. [2019-10-15 01:08:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2612 states. [2019-10-15 01:08:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 4174 transitions. [2019-10-15 01:08:02,532 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 4174 transitions. Word has length 185 [2019-10-15 01:08:02,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:02,534 INFO L462 AbstractCegarLoop]: Abstraction has 2612 states and 4174 transitions. [2019-10-15 01:08:02,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:02,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 4174 transitions. [2019-10-15 01:08:02,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-15 01:08:02,543 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:02,544 INFO L380 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:02,753 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:02,753 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:02,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:02,753 INFO L82 PathProgramCache]: Analyzing trace with hash -299526448, now seen corresponding path program 1 times [2019-10-15 01:08:02,754 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:02,754 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796459988] [2019-10-15 01:08:02,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:02,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:02,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:02,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796459988] [2019-10-15 01:08:02,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528845461] [2019-10-15 01:08:02,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:03,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 3269 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:03,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:08:03,600 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:04,059 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:04,060 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:04,061 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 11 [2019-10-15 01:08:04,061 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508504733] [2019-10-15 01:08:04,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:04,061 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:04,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:04,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:04,062 INFO L87 Difference]: Start difference. First operand 2612 states and 4174 transitions. Second operand 5 states. [2019-10-15 01:08:05,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:05,014 INFO L93 Difference]: Finished difference Result 5115 states and 8353 transitions. [2019-10-15 01:08:05,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:05,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2019-10-15 01:08:05,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:05,031 INFO L225 Difference]: With dead ends: 5115 [2019-10-15 01:08:05,031 INFO L226 Difference]: Without dead ends: 2652 [2019-10-15 01:08:05,042 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 363 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:08:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2019-10-15 01:08:05,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2652. [2019-10-15 01:08:05,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2652 states. [2019-10-15 01:08:05,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 4238 transitions. [2019-10-15 01:08:05,143 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 4238 transitions. Word has length 187 [2019-10-15 01:08:05,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:05,144 INFO L462 AbstractCegarLoop]: Abstraction has 2652 states and 4238 transitions. [2019-10-15 01:08:05,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:05,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 4238 transitions. [2019-10-15 01:08:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-15 01:08:05,152 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:05,152 INFO L380 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:05,361 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:05,361 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:05,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:05,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1601202366, now seen corresponding path program 1 times [2019-10-15 01:08:05,362 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:05,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061678280] [2019-10-15 01:08:05,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:05,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:05,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:05,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061678280] [2019-10-15 01:08:05,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126421756] [2019-10-15 01:08:05,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:06,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 3271 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:06,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:08:06,165 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:06,547 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:06,548 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 11 [2019-10-15 01:08:06,548 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942602122] [2019-10-15 01:08:06,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:06,548 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:06,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:06,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:06,549 INFO L87 Difference]: Start difference. First operand 2652 states and 4238 transitions. Second operand 5 states. [2019-10-15 01:08:07,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:07,614 INFO L93 Difference]: Finished difference Result 5195 states and 8468 transitions. [2019-10-15 01:08:07,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:07,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2019-10-15 01:08:07,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:07,632 INFO L225 Difference]: With dead ends: 5195 [2019-10-15 01:08:07,633 INFO L226 Difference]: Without dead ends: 2692 [2019-10-15 01:08:07,645 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 367 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:08:07,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2019-10-15 01:08:07,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2692. [2019-10-15 01:08:07,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2692 states. [2019-10-15 01:08:07,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4302 transitions. [2019-10-15 01:08:07,746 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4302 transitions. Word has length 189 [2019-10-15 01:08:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:07,748 INFO L462 AbstractCegarLoop]: Abstraction has 2692 states and 4302 transitions. [2019-10-15 01:08:07,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4302 transitions. [2019-10-15 01:08:07,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-15 01:08:07,758 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:07,758 INFO L380 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:07,974 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:07,975 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:07,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:07,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1886387896, now seen corresponding path program 1 times [2019-10-15 01:08:07,976 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:07,976 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135404809] [2019-10-15 01:08:07,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:07,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:07,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:08,134 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135404809] [2019-10-15 01:08:08,134 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462803164] [2019-10-15 01:08:08,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true