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_spec1_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:09:41,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:09:41,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:09:41,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:09:41,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:09:41,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:09:41,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:09:41,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:09:41,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:09:41,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:09:41,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:09:41,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:09:41,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:09:41,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:09:41,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:09:41,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:09:41,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:09:41,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:09:41,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:09:41,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:09:41,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:09:41,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:09:41,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:09:41,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:09:41,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:09:41,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:09:41,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:09:41,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:09:41,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:09:41,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:09:41,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:09:41,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:09:41,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:09:41,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:09:41,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:09:41,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:09:41,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:09:41,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:09:41,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:09:41,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:09:41,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:09:41,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:09:41,864 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:09:41,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:09:41,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:09:41,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:09:41,866 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:09:41,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:09:41,867 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:09:41,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:09:41,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:09:41,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:09:41,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:09:41,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:09:41,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:09:41,868 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:09:41,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:09:41,868 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:09:41,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:09:41,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:09:41,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:09:41,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:09:41,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:09:41,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:09:41,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:09:41,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:09:41,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:09:41,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:09:41,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:09:41,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:09:41,871 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 [2019-10-13 21:09:42,152 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:09:42,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:09:42,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:09:42,178 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:09:42,178 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:09:42,179 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product19.cil.c [2019-10-13 21:09:42,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15819b0a7/8664874fe2974b3391fe522b97efa2e5/FLAGd9c0e1069 [2019-10-13 21:09:42,905 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:09:42,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product19.cil.c [2019-10-13 21:09:42,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15819b0a7/8664874fe2974b3391fe522b97efa2e5/FLAGd9c0e1069 [2019-10-13 21:09:43,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15819b0a7/8664874fe2974b3391fe522b97efa2e5 [2019-10-13 21:09:43,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:09:43,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:09:43,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:09:43,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:09:43,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:09:43,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:09:43" (1/1) ... [2019-10-13 21:09:43,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2ab5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:43, skipping insertion in model container [2019-10-13 21:09:43,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:09:43" (1/1) ... [2019-10-13 21:09:43,139 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:09:43,211 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:09:43,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:09:43,934 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:09:44,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:09:44,127 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:09:44,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:44 WrapperNode [2019-10-13 21:09:44,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:09:44,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:09:44,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:09:44,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:09:44,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:44" (1/1) ... [2019-10-13 21:09:44,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:44" (1/1) ... [2019-10-13 21:09:44,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:44" (1/1) ... [2019-10-13 21:09:44,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:44" (1/1) ... [2019-10-13 21:09:44,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:44" (1/1) ... [2019-10-13 21:09:44,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:44" (1/1) ... [2019-10-13 21:09:44,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:44" (1/1) ... [2019-10-13 21:09:44,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:09:44,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:09:44,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:09:44,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:09:44,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:09:44,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:09:44,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:09:44,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:09:44,411 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:09:44,411 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:09:44,411 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:09:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:09:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:09:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:09:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:09:44,413 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:09:44,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:09:44,413 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:09:44,413 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:09:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:09:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:09:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:09:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:09:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:09:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:09:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:09:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:09:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:09:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:09:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:09:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:09:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:09:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:09:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:09:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:09:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:09:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:09:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:09:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:09:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:09:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:09:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 21:09:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 21:09:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 21:09:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 21:09:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:09:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:09:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:09:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 21:09:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:09:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 21:09:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:09:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:09:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:09:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:09:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:09:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:09:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:09:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:09:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:09:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:09:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 21:09:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:09:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:09:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:09:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 21:09:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:09:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:09:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:09:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:09:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:09:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:09:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 21:09:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 21:09:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:09:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:09:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:09:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:09:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:09:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:09:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:09:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:09:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:09:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:09:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:09:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:09:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:09:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:09:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:09:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:09:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:09:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:09:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:09:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:09:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:09:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:09:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:09:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:09:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:09:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:09:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 21:09:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:09:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:09:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:09:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:09:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:09:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:09:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:09:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:09:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:09:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:09:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:09:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:09:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:09:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:09:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:09:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:09:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:09:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:09:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 21:09:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 21:09:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:09:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:09:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:09:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:09:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:09:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:09:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:09:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:09:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:09:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 21:09:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:09:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:09:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:09:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:09:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:09:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:09:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 21:09:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 21:09:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 21:09:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 21:09:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:09:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:09:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:09:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:09:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:09:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 21:09:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:09:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:09:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 21:09:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:09:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:09:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:09:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:09:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:09:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:09:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:09:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:09:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:09:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:09:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:09:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:09:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:09:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:09:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:09:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:09:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:09:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:09:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:09:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:09:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:09:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:09:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:09:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:09:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:09:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:09:47,164 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:09:47,165 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:09:47,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:09:47 BoogieIcfgContainer [2019-10-13 21:09:47,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:09:47,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:09:47,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:09:47,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:09:47,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:09:43" (1/3) ... [2019-10-13 21:09:47,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57aa8113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:09:47, skipping insertion in model container [2019-10-13 21:09:47,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:09:44" (2/3) ... [2019-10-13 21:09:47,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57aa8113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:09:47, skipping insertion in model container [2019-10-13 21:09:47,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:09:47" (3/3) ... [2019-10-13 21:09:47,178 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product19.cil.c [2019-10-13 21:09:47,188 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:09:47,197 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:09:47,209 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:09:47,257 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:09:47,257 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:09:47,257 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:09:47,257 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:09:47,257 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:09:47,257 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:09:47,258 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:09:47,258 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:09:47,295 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states. [2019-10-13 21:09:47,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 21:09:47,327 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:47,328 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:47,330 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:47,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:47,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1279935943, now seen corresponding path program 1 times [2019-10-13 21:09:47,347 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:47,347 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671495495] [2019-10-13 21:09:47,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:47,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:47,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:09:47,982 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671495495] [2019-10-13 21:09:47,985 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161952973] [2019-10-13 21:09:47,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:48,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 21:09:48,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:48,820 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:09:48,820 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:09:49,198 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:09:49,199 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 4 [2019-10-13 21:09:49,199 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575763461] [2019-10-13 21:09:49,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:09:49,213 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:49,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:09:49,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:09:49,230 INFO L87 Difference]: Start difference. First operand 771 states. Second operand 2 states. [2019-10-13 21:09:49,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:49,336 INFO L93 Difference]: Finished difference Result 654 states and 1038 transitions. [2019-10-13 21:09:49,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:09:49,343 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-10-13 21:09:49,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:49,375 INFO L225 Difference]: With dead ends: 654 [2019-10-13 21:09:49,375 INFO L226 Difference]: Without dead ends: 617 [2019-10-13 21:09:49,379 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:09:49,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2019-10-13 21:09:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2019-10-13 21:09:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2019-10-13 21:09:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 983 transitions. [2019-10-13 21:09:49,479 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 983 transitions. Word has length 164 [2019-10-13 21:09:49,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:49,482 INFO L462 AbstractCegarLoop]: Abstraction has 617 states and 983 transitions. [2019-10-13 21:09:49,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:09:49,482 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 983 transitions. [2019-10-13 21:09:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:09:49,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:49,494 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:49,702 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:49,702 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:49,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:49,703 INFO L82 PathProgramCache]: Analyzing trace with hash 353240232, now seen corresponding path program 1 times [2019-10-13 21:09:49,703 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:49,704 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120981882] [2019-10-13 21:09:49,704 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:49,704 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:49,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:09:49,956 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120981882] [2019-10-13 21:09:49,956 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219856280] [2019-10-13 21:09:49,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:50,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 3292 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:09:50,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:09:50,665 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:09:50,981 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:09:50,981 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-13 21:09:50,981 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687930981] [2019-10-13 21:09:50,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:09:50,983 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:50,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:09:50,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:09:50,984 INFO L87 Difference]: Start difference. First operand 617 states and 983 transitions. Second operand 4 states. [2019-10-13 21:09:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:51,107 INFO L93 Difference]: Finished difference Result 1206 states and 1939 transitions. [2019-10-13 21:09:51,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:09:51,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-10-13 21:09:51,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:51,115 INFO L225 Difference]: With dead ends: 1206 [2019-10-13 21:09:51,116 INFO L226 Difference]: Without dead ends: 617 [2019-10-13 21:09:51,123 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 328 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:09:51,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2019-10-13 21:09:51,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2019-10-13 21:09:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2019-10-13 21:09:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 982 transitions. [2019-10-13 21:09:51,241 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 982 transitions. Word has length 166 [2019-10-13 21:09:51,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:51,242 INFO L462 AbstractCegarLoop]: Abstraction has 617 states and 982 transitions. [2019-10-13 21:09:51,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:09:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 982 transitions. [2019-10-13 21:09:51,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 21:09:51,252 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:51,253 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:51,472 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:51,473 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:51,474 INFO L82 PathProgramCache]: Analyzing trace with hash -699423164, now seen corresponding path program 1 times [2019-10-13 21:09:51,474 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:51,474 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333036425] [2019-10-13 21:09:51,475 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:51,475 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:51,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:51,623 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:09:51,624 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333036425] [2019-10-13 21:09:51,624 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184807549] [2019-10-13 21:09:51,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:52,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 3294 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:09:52,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:09:52,266 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:52,552 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:09:52,552 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:09:52,553 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-13 21:09:52,553 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703456568] [2019-10-13 21:09:52,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:09:52,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:52,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:09:52,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:09:52,555 INFO L87 Difference]: Start difference. First operand 617 states and 982 transitions. Second operand 4 states. [2019-10-13 21:09:52,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:52,642 INFO L93 Difference]: Finished difference Result 1206 states and 1937 transitions. [2019-10-13 21:09:52,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:09:52,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2019-10-13 21:09:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:52,650 INFO L225 Difference]: With dead ends: 1206 [2019-10-13 21:09:52,650 INFO L226 Difference]: Without dead ends: 617 [2019-10-13 21:09:52,654 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:09:52,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2019-10-13 21:09:52,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2019-10-13 21:09:52,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2019-10-13 21:09:52,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 981 transitions. [2019-10-13 21:09:52,706 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 981 transitions. Word has length 168 [2019-10-13 21:09:52,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:52,707 INFO L462 AbstractCegarLoop]: Abstraction has 617 states and 981 transitions. [2019-10-13 21:09:52,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:09:52,708 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 981 transitions. [2019-10-13 21:09:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 21:09:52,717 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:52,718 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:52,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:52,936 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:52,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:52,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1185296208, now seen corresponding path program 1 times [2019-10-13 21:09:52,937 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:52,938 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658588458] [2019-10-13 21:09:52,938 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:52,938 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:52,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:09:53,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658588458] [2019-10-13 21:09:53,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961875616] [2019-10-13 21:09:53,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:53,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:09:53,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:09:53,841 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:09:54,139 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:09:54,139 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-13 21:09:54,139 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64295374] [2019-10-13 21:09:54,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:09:54,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:54,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:09:54,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:09:54,143 INFO L87 Difference]: Start difference. First operand 617 states and 981 transitions. Second operand 4 states. [2019-10-13 21:09:54,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:54,231 INFO L93 Difference]: Finished difference Result 1213 states and 1944 transitions. [2019-10-13 21:09:54,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:09:54,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-10-13 21:09:54,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:54,240 INFO L225 Difference]: With dead ends: 1213 [2019-10-13 21:09:54,240 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 21:09:54,244 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:09:54,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 21:09:54,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 21:09:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 21:09:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 993 transitions. [2019-10-13 21:09:54,286 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 993 transitions. Word has length 170 [2019-10-13 21:09:54,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:54,287 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 993 transitions. [2019-10-13 21:09:54,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:09:54,287 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 993 transitions. [2019-10-13 21:09:54,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:09:54,292 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:54,292 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:54,503 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:54,504 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:54,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:54,504 INFO L82 PathProgramCache]: Analyzing trace with hash -766305062, now seen corresponding path program 1 times [2019-10-13 21:09:54,505 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:54,505 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511007019] [2019-10-13 21:09:54,505 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:54,505 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:54,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:54,696 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:09:54,697 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511007019] [2019-10-13 21:09:54,697 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274044626] [2019-10-13 21:09:54,697 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 [2019-10-13 21:09:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:55,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 3297 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:09:55,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:09:55,354 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:09:55,682 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:09:55,682 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-13 21:09:55,684 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747388560] [2019-10-13 21:09:55,685 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:09:55,685 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:55,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:09:55,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:09:55,686 INFO L87 Difference]: Start difference. First operand 626 states and 993 transitions. Second operand 4 states. [2019-10-13 21:09:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:55,809 INFO L93 Difference]: Finished difference Result 1215 states and 1945 transitions. [2019-10-13 21:09:55,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:09:55,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-10-13 21:09:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:55,819 INFO L225 Difference]: With dead ends: 1215 [2019-10-13 21:09:55,819 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 21:09:55,824 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:09:55,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 21:09:55,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 21:09:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 21:09:55,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 992 transitions. [2019-10-13 21:09:55,861 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 992 transitions. Word has length 171 [2019-10-13 21:09:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:55,863 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 992 transitions. [2019-10-13 21:09:55,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:09:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 992 transitions. [2019-10-13 21:09:55,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-13 21:09:55,871 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:55,872 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:56,091 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:56,094 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:56,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:56,094 INFO L82 PathProgramCache]: Analyzing trace with hash -523185676, now seen corresponding path program 1 times [2019-10-13 21:09:56,095 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:56,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652372511] [2019-10-13 21:09:56,097 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:56,155 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:56,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:09:56,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652372511] [2019-10-13 21:09:56,326 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544473472] [2019-10-13 21:09:56,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:56,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 3298 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:09:56,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:56,975 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:09:56,975 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:09:57,363 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:09:57,364 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 21:09:57,364 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933057578] [2019-10-13 21:09:57,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:09:57,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:57,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:09:57,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:09:57,367 INFO L87 Difference]: Start difference. First operand 626 states and 992 transitions. Second operand 4 states. [2019-10-13 21:09:57,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:57,490 INFO L93 Difference]: Finished difference Result 1215 states and 1944 transitions. [2019-10-13 21:09:57,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:09:57,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-10-13 21:09:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:57,499 INFO L225 Difference]: With dead ends: 1215 [2019-10-13 21:09:57,499 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 21:09:57,505 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 340 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:09:57,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 21:09:57,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 21:09:57,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 21:09:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 991 transitions. [2019-10-13 21:09:57,540 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 991 transitions. Word has length 172 [2019-10-13 21:09:57,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:57,541 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 991 transitions. [2019-10-13 21:09:57,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:09:57,541 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 991 transitions. [2019-10-13 21:09:57,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 21:09:57,549 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:57,550 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:57,763 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:57,763 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:57,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:57,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1402299617, now seen corresponding path program 1 times [2019-10-13 21:09:57,764 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:57,765 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461428836] [2019-10-13 21:09:57,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:57,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:57,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:09:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:57,996 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:09:57,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461428836] [2019-10-13 21:09:57,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519830367] [2019-10-13 21:09:57,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:09:58,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 3298 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:09:58,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:09:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:09:59,031 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:09:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:09:59,440 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:09:59,440 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-13 21:09:59,441 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924486957] [2019-10-13 21:09:59,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:09:59,446 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:09:59,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:09:59,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:09:59,448 INFO L87 Difference]: Start difference. First operand 626 states and 991 transitions. Second operand 4 states. [2019-10-13 21:09:59,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:09:59,696 INFO L93 Difference]: Finished difference Result 1214 states and 1944 transitions. [2019-10-13 21:09:59,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:09:59,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2019-10-13 21:09:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:09:59,706 INFO L225 Difference]: With dead ends: 1214 [2019-10-13 21:09:59,706 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 21:09:59,712 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 342 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:09:59,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 21:09:59,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 21:09:59,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 21:09:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 986 transitions. [2019-10-13 21:09:59,755 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 986 transitions. Word has length 173 [2019-10-13 21:09:59,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:09:59,758 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 986 transitions. [2019-10-13 21:09:59,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:09:59,758 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 986 transitions. [2019-10-13 21:09:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 21:09:59,767 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:09:59,768 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:09:59,980 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:09:59,981 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:09:59,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:09:59,981 INFO L82 PathProgramCache]: Analyzing trace with hash -162514225, now seen corresponding path program 1 times [2019-10-13 21:09:59,982 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:09:59,982 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698359729] [2019-10-13 21:09:59,983 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:59,983 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:09:59,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:10:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-13 21:10:00,245 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698359729] [2019-10-13 21:10:00,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935352158] [2019-10-13 21:10:00,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:10:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:00,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 3300 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:10:00,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:10:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:10:00,881 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:10:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:10:01,145 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:10:01,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-13 21:10:01,146 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438552229] [2019-10-13 21:10:01,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:10:01,147 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:10:01,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:10:01,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:10:01,148 INFO L87 Difference]: Start difference. First operand 626 states and 986 transitions. Second operand 4 states. [2019-10-13 21:10:01,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:10:01,358 INFO L93 Difference]: Finished difference Result 1214 states and 1934 transitions. [2019-10-13 21:10:01,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:10:01,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2019-10-13 21:10:01,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:10:01,368 INFO L225 Difference]: With dead ends: 1214 [2019-10-13 21:10:01,368 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 21:10:01,373 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:10:01,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 21:10:01,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 21:10:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 21:10:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 981 transitions. [2019-10-13 21:10:01,406 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 981 transitions. Word has length 175 [2019-10-13 21:10:01,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:10:01,407 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 981 transitions. [2019-10-13 21:10:01,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:10:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 981 transitions. [2019-10-13 21:10:01,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 21:10:01,415 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:10:01,416 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:10:01,627 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:10:01,627 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:10:01,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:10:01,628 INFO L82 PathProgramCache]: Analyzing trace with hash -678995563, now seen corresponding path program 1 times [2019-10-13 21:10:01,628 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:10:01,628 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288560337] [2019-10-13 21:10:01,629 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:01,629 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:01,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:10:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:10:01,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288560337] [2019-10-13 21:10:01,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463765099] [2019-10-13 21:10:01,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:10:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:02,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 3302 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:10:02,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:10:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:10:02,674 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:10:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:10:02,932 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:10:02,932 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-13 21:10:02,932 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835393423] [2019-10-13 21:10:02,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:10:02,933 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:10:02,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:10:02,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:10:02,934 INFO L87 Difference]: Start difference. First operand 626 states and 981 transitions. Second operand 4 states. [2019-10-13 21:10:03,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:10:03,144 INFO L93 Difference]: Finished difference Result 1250 states and 1983 transitions. [2019-10-13 21:10:03,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:10:03,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-13 21:10:03,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:10:03,149 INFO L225 Difference]: With dead ends: 1250 [2019-10-13 21:10:03,150 INFO L226 Difference]: Without dead ends: 665 [2019-10-13 21:10:03,153 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:10:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2019-10-13 21:10:03,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2019-10-13 21:10:03,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2019-10-13 21:10:03,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1045 transitions. [2019-10-13 21:10:03,177 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1045 transitions. Word has length 177 [2019-10-13 21:10:03,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:10:03,178 INFO L462 AbstractCegarLoop]: Abstraction has 665 states and 1045 transitions. [2019-10-13 21:10:03,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:10:03,178 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1045 transitions. [2019-10-13 21:10:03,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-13 21:10:03,182 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:10:03,183 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:10:03,394 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:10:03,395 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:10:03,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:10:03,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1841938813, now seen corresponding path program 1 times [2019-10-13 21:10:03,396 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:10:03,396 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312703556] [2019-10-13 21:10:03,397 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:03,397 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:03,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:10:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:10:03,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312703556] [2019-10-13 21:10:03,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290620373] [2019-10-13 21:10:03,550 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 [2019-10-13 21:10:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:04,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 3303 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:10:04,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:10:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:10:04,452 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:10:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:10:04,711 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:10:04,711 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-13 21:10:04,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308775612] [2019-10-13 21:10:04,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:10:04,712 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:10:04,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:10:04,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:10:04,713 INFO L87 Difference]: Start difference. First operand 665 states and 1045 transitions. Second operand 4 states. [2019-10-13 21:10:04,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:10:04,911 INFO L93 Difference]: Finished difference Result 1253 states and 1986 transitions. [2019-10-13 21:10:04,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:10:04,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2019-10-13 21:10:04,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:10:04,919 INFO L225 Difference]: With dead ends: 1253 [2019-10-13 21:10:04,919 INFO L226 Difference]: Without dead ends: 665 [2019-10-13 21:10:04,924 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 352 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:10:04,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2019-10-13 21:10:04,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2019-10-13 21:10:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2019-10-13 21:10:04,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1040 transitions. [2019-10-13 21:10:04,955 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1040 transitions. Word has length 178 [2019-10-13 21:10:04,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:10:04,955 INFO L462 AbstractCegarLoop]: Abstraction has 665 states and 1040 transitions. [2019-10-13 21:10:04,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:10:04,956 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1040 transitions. [2019-10-13 21:10:04,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-13 21:10:04,962 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:10:04,963 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:10:05,172 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:10:05,172 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:10:05,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:10:05,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1670980354, now seen corresponding path program 1 times [2019-10-13 21:10:05,173 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:10:05,173 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684831978] [2019-10-13 21:10:05,173 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:05,173 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:05,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:10:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:10:05,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684831978] [2019-10-13 21:10:05,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21726470] [2019-10-13 21:10:05,332 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 [2019-10-13 21:10:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:06,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 3299 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 21:10:06,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:10:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:10:06,138 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:10:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:10:06,607 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:10:06,607 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [4] total 13 [2019-10-13 21:10:06,607 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004100107] [2019-10-13 21:10:06,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:10:06,608 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:10:06,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:10:06,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:10:06,609 INFO L87 Difference]: Start difference. First operand 665 states and 1040 transitions. Second operand 11 states. [2019-10-13 21:10:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:10:06,826 INFO L93 Difference]: Finished difference Result 1198 states and 1892 transitions. [2019-10-13 21:10:06,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:10:06,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 178 [2019-10-13 21:10:06,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:10:06,832 INFO L225 Difference]: With dead ends: 1198 [2019-10-13 21:10:06,832 INFO L226 Difference]: Without dead ends: 685 [2019-10-13 21:10:06,836 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 347 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-13 21:10:06,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2019-10-13 21:10:06,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 672. [2019-10-13 21:10:06,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2019-10-13 21:10:06,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1049 transitions. [2019-10-13 21:10:06,864 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1049 transitions. Word has length 178 [2019-10-13 21:10:06,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:10:06,864 INFO L462 AbstractCegarLoop]: Abstraction has 672 states and 1049 transitions. [2019-10-13 21:10:06,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:10:06,865 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1049 transitions. [2019-10-13 21:10:06,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 21:10:06,870 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:10:06,870 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:10:07,079 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:10:07,079 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:10:07,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:10:07,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1908550257, now seen corresponding path program 1 times [2019-10-13 21:10:07,080 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:10:07,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760822909] [2019-10-13 21:10:07,081 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:07,081 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:07,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:10:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:10:07,198 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760822909] [2019-10-13 21:10:07,198 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813487436] [2019-10-13 21:10:07,198 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 [2019-10-13 21:10:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:08,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 3300 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 21:10:08,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:10:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:10:08,086 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:10:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:10:08,460 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:10:08,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [4] total 10 [2019-10-13 21:10:08,460 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032649361] [2019-10-13 21:10:08,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:10:08,461 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:10:08,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:10:08,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:10:08,462 INFO L87 Difference]: Start difference. First operand 672 states and 1049 transitions. Second operand 8 states. [2019-10-13 21:10:08,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:10:08,584 INFO L93 Difference]: Finished difference Result 1197 states and 1892 transitions. [2019-10-13 21:10:08,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:10:08,584 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2019-10-13 21:10:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:10:08,592 INFO L225 Difference]: With dead ends: 1197 [2019-10-13 21:10:08,592 INFO L226 Difference]: Without dead ends: 684 [2019-10-13 21:10:08,596 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 349 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:10:08,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2019-10-13 21:10:08,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 679. [2019-10-13 21:10:08,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-10-13 21:10:08,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1059 transitions. [2019-10-13 21:10:08,624 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1059 transitions. Word has length 179 [2019-10-13 21:10:08,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:10:08,624 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 1059 transitions. [2019-10-13 21:10:08,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:10:08,625 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1059 transitions. [2019-10-13 21:10:08,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 21:10:08,630 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:10:08,630 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:10:08,848 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:10:08,848 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:10:08,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:10:08,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1901221617, now seen corresponding path program 1 times [2019-10-13 21:10:08,849 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:10:08,849 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452420037] [2019-10-13 21:10:08,850 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:08,850 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:08,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:10:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:10:09,069 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452420037] [2019-10-13 21:10:09,069 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248408026] [2019-10-13 21:10:09,069 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 [2019-10-13 21:10:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:09,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 21:10:09,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:10:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:10:09,934 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:10:10,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:10:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:10:10,458 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:10:10,459 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [4] total 16 [2019-10-13 21:10:10,459 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780789234] [2019-10-13 21:10:10,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:10:10,459 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:10:10,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:10:10,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:10:10,460 INFO L87 Difference]: Start difference. First operand 679 states and 1059 transitions. Second operand 14 states. [2019-10-13 21:10:10,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:10:10,713 INFO L93 Difference]: Finished difference Result 1207 states and 1908 transitions. [2019-10-13 21:10:10,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:10:10,713 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 179 [2019-10-13 21:10:10,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:10:10,718 INFO L225 Difference]: With dead ends: 1207 [2019-10-13 21:10:10,719 INFO L226 Difference]: Without dead ends: 694 [2019-10-13 21:10:10,722 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 344 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:10:10,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2019-10-13 21:10:10,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 681. [2019-10-13 21:10:10,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2019-10-13 21:10:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1064 transitions. [2019-10-13 21:10:10,750 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1064 transitions. Word has length 179 [2019-10-13 21:10:10,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:10:10,751 INFO L462 AbstractCegarLoop]: Abstraction has 681 states and 1064 transitions. [2019-10-13 21:10:10,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:10:10,751 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1064 transitions. [2019-10-13 21:10:10,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-13 21:10:10,756 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:10:10,756 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:10:10,965 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:10:10,966 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:10:10,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:10:10,966 INFO L82 PathProgramCache]: Analyzing trace with hash 595033097, now seen corresponding path program 1 times [2019-10-13 21:10:10,967 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:10:10,967 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637489435] [2019-10-13 21:10:10,967 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:10,968 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:10,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:10:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:10:11,094 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637489435] [2019-10-13 21:10:11,094 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471736690] [2019-10-13 21:10:11,095 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 [2019-10-13 21:10:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:11,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 3297 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 21:10:11,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:10:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:10:12,005 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:10:12,473 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:10:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:10:12,604 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:10:12,604 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [4] total 13 [2019-10-13 21:10:12,604 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771920419] [2019-10-13 21:10:12,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:10:12,606 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:10:12,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:10:12,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:10:12,607 INFO L87 Difference]: Start difference. First operand 681 states and 1064 transitions. Second operand 11 states. [2019-10-13 21:10:12,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:10:12,827 INFO L93 Difference]: Finished difference Result 1203 states and 1907 transitions. [2019-10-13 21:10:12,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:10:12,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2019-10-13 21:10:12,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:10:12,832 INFO L225 Difference]: With dead ends: 1203 [2019-10-13 21:10:12,832 INFO L226 Difference]: Without dead ends: 690 [2019-10-13 21:10:12,836 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 347 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:10:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-13 21:10:12,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 683. [2019-10-13 21:10:12,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2019-10-13 21:10:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1069 transitions. [2019-10-13 21:10:12,869 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1069 transitions. Word has length 180 [2019-10-13 21:10:12,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:10:12,872 INFO L462 AbstractCegarLoop]: Abstraction has 683 states and 1069 transitions. [2019-10-13 21:10:12,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:10:12,873 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1069 transitions. [2019-10-13 21:10:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-13 21:10:12,879 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:10:12,879 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:10:13,097 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:10:13,098 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:10:13,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:10:13,099 INFO L82 PathProgramCache]: Analyzing trace with hash 917047914, now seen corresponding path program 1 times [2019-10-13 21:10:13,099 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:10:13,099 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859531451] [2019-10-13 21:10:13,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:13,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:13,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:10:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:10:13,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859531451] [2019-10-13 21:10:13,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132022678] [2019-10-13 21:10:13,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-10-13 21:10:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:10:14,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 3298 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 21:10:14,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:10:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:10:14,069 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:10:14,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms