java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:11:08,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:11:08,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:11:08,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:11:08,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:11:08,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:11:08,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:11:08,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:11:08,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:11:08,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:11:08,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:11:08,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:11:08,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:11:08,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:11:08,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:11:08,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:11:08,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:11:08,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:11:08,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:11:08,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:11:08,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:11:08,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:11:08,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:11:08,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:11:08,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:11:08,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:11:08,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:11:08,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:11:08,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:11:08,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:11:08,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:11:08,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:11:08,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:11:08,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:11:08,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:11:08,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:11:08,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:11:08,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:11:08,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:11:08,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:11:08,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:11:08,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:11:08,755 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:11:08,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:11:08,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:11:08,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:11:08,758 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:11:08,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:11:08,758 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:11:08,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:11:08,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:11:08,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:11:08,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:11:08,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:11:08,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:11:08,760 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:11:08,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:11:08,760 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:11:08,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:11:08,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:11:08,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:11:08,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:11:08,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:11:08,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:11:08,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:11:08,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:11:08,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:11:08,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:11:08,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:11:08,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:11:08,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:11:09,071 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:11:09,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:11:09,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:11:09,090 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:11:09,091 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:11:09,091 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product32.cil.c [2019-10-15 01:11:09,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff504b6f0/046e5d8485794fa781f4fb3f4d15f75f/FLAG5cf40d3dd [2019-10-15 01:11:09,844 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:11:09,845 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product32.cil.c [2019-10-15 01:11:09,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff504b6f0/046e5d8485794fa781f4fb3f4d15f75f/FLAG5cf40d3dd [2019-10-15 01:11:10,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff504b6f0/046e5d8485794fa781f4fb3f4d15f75f [2019-10-15 01:11:10,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:11:10,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:11:10,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:10,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:11:10,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:11:10,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:10" (1/1) ... [2019-10-15 01:11:10,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5d720d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:10, skipping insertion in model container [2019-10-15 01:11:10,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:10" (1/1) ... [2019-10-15 01:11:10,104 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:11:10,186 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:11:10,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:10,936 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:11:11,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:11,156 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:11:11,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11 WrapperNode [2019-10-15 01:11:11,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:11,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:11:11,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:11:11,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:11:11,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... [2019-10-15 01:11:11,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... [2019-10-15 01:11:11,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... [2019-10-15 01:11:11,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... [2019-10-15 01:11:11,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... [2019-10-15 01:11:11,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... [2019-10-15 01:11:11,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... [2019-10-15 01:11:11,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:11:11,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:11:11,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:11:11,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:11:11,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:11:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:11:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:11:11,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:11:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:11:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:11:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:11:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:11:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:11:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:11:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:11,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:11,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:11,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:11:11,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:11:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:11:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:11:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:11:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:11:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:11:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:11:11,464 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:11:11,464 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:11:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:11:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:11:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:11:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:11:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:11:11,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:11:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:11:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:11:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:11:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:11:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:11:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:11:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:11:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:11:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:11:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:11:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:11:11,468 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:11:11,468 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:11:11,468 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:11:11,468 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:11:11,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:11:11,468 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:11:11,469 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:11:11,469 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:11:11,469 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:11:11,469 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:11:11,469 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:11:11,469 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:11:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:11:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 01:11:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:11:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:11:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:11:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:11:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:11:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:11:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:11:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:11:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:11:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:11:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:11:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:11:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:11:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:11:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:11:11,474 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:11:11,474 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:11:11,474 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:11,474 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:11:11,474 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:11:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 01:11:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:11:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 01:11:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:11:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:11:11,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:11:11,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:11:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:11:11,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:11:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:11:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:11:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:11:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:11:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:11:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:11:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:11:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:11:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:11:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:11:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:11:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:11:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:11:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:11:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:11:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:11:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:11:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:11:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:11:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:11:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:11:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:11:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:11:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:11:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:11:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:11:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:11:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:11:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:11:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:11:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:11:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:11:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:11:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:11:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:11:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:11:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:11:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:11:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:11:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:11:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:11:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:11:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:11:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:11:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:11:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:11:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:11:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:11:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:11:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:11:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:11:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:11:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:11:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:11:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:11:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:11:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:11:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:11:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:11:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:11:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:11:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:11:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:11:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:11:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:11:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:11:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:11:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:11:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:11:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:11:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 01:11:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:11:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:11:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:11:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:11:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:11:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:11:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:11:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:11:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:11:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:11:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:11:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:11:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 01:11:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 01:11:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:11:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:11:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:11:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:11:14,130 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:11:14,130 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:11:14,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:14 BoogieIcfgContainer [2019-10-15 01:11:14,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:11:14,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:11:14,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:11:14,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:11:14,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:11:10" (1/3) ... [2019-10-15 01:11:14,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44454214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:14, skipping insertion in model container [2019-10-15 01:11:14,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:11" (2/3) ... [2019-10-15 01:11:14,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44454214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:14, skipping insertion in model container [2019-10-15 01:11:14,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:14" (3/3) ... [2019-10-15 01:11:14,140 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product32.cil.c [2019-10-15 01:11:14,151 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:11:14,160 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:11:14,172 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:11:14,221 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:11:14,221 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:11:14,221 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:11:14,221 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:11:14,221 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:11:14,221 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:11:14,222 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:11:14,222 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:11:14,264 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states. [2019-10-15 01:11:14,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 01:11:14,280 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:14,281 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:14,283 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:14,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:14,288 INFO L82 PathProgramCache]: Analyzing trace with hash 250994397, now seen corresponding path program 1 times [2019-10-15 01:11:14,297 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:14,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430851216] [2019-10-15 01:11:14,297 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:14,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:14,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:15,028 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430851216] [2019-10-15 01:11:15,029 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:15,030 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:15,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916534216] [2019-10-15 01:11:15,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:15,038 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:15,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:15,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:15,061 INFO L87 Difference]: Start difference. First operand 856 states. Second operand 7 states. [2019-10-15 01:11:15,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:15,367 INFO L93 Difference]: Finished difference Result 1377 states and 2196 transitions. [2019-10-15 01:11:15,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:15,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-10-15 01:11:15,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:15,406 INFO L225 Difference]: With dead ends: 1377 [2019-10-15 01:11:15,406 INFO L226 Difference]: Without dead ends: 697 [2019-10-15 01:11:15,419 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:15,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-10-15 01:11:15,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2019-10-15 01:11:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-10-15 01:11:15,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1093 transitions. [2019-10-15 01:11:15,569 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1093 transitions. Word has length 93 [2019-10-15 01:11:15,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:15,570 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 1093 transitions. [2019-10-15 01:11:15,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:15,570 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1093 transitions. [2019-10-15 01:11:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:11:15,577 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:15,577 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:15,577 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:15,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:15,578 INFO L82 PathProgramCache]: Analyzing trace with hash -435355313, now seen corresponding path program 1 times [2019-10-15 01:11:15,578 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:15,578 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882934140] [2019-10-15 01:11:15,578 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:15,579 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:15,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:15,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882934140] [2019-10-15 01:11:15,820 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:15,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:15,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732893605] [2019-10-15 01:11:15,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:15,823 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:15,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:15,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:15,824 INFO L87 Difference]: Start difference. First operand 695 states and 1093 transitions. Second operand 4 states. [2019-10-15 01:11:15,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:15,966 INFO L93 Difference]: Finished difference Result 1356 states and 2151 transitions. [2019-10-15 01:11:15,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:15,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-15 01:11:15,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:15,981 INFO L225 Difference]: With dead ends: 1356 [2019-10-15 01:11:15,981 INFO L226 Difference]: Without dead ends: 677 [2019-10-15 01:11:15,985 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:15,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2019-10-15 01:11:16,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2019-10-15 01:11:16,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2019-10-15 01:11:16,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1060 transitions. [2019-10-15 01:11:16,062 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1060 transitions. Word has length 94 [2019-10-15 01:11:16,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:16,064 INFO L462 AbstractCegarLoop]: Abstraction has 677 states and 1060 transitions. [2019-10-15 01:11:16,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:16,064 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1060 transitions. [2019-10-15 01:11:16,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:11:16,072 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:16,073 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:16,074 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:16,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:16,074 INFO L82 PathProgramCache]: Analyzing trace with hash 846583857, now seen corresponding path program 1 times [2019-10-15 01:11:16,074 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:16,074 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823028105] [2019-10-15 01:11:16,075 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,075 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:16,249 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823028105] [2019-10-15 01:11:16,249 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:16,249 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:16,249 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911125640] [2019-10-15 01:11:16,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:16,250 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:16,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:16,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:16,251 INFO L87 Difference]: Start difference. First operand 677 states and 1060 transitions. Second operand 7 states. [2019-10-15 01:11:16,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:16,349 INFO L93 Difference]: Finished difference Result 1325 states and 2093 transitions. [2019-10-15 01:11:16,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:16,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2019-10-15 01:11:16,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:16,356 INFO L225 Difference]: With dead ends: 1325 [2019-10-15 01:11:16,356 INFO L226 Difference]: Without dead ends: 671 [2019-10-15 01:11:16,359 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:16,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2019-10-15 01:11:16,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2019-10-15 01:11:16,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2019-10-15 01:11:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1047 transitions. [2019-10-15 01:11:16,388 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1047 transitions. Word has length 94 [2019-10-15 01:11:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:16,389 INFO L462 AbstractCegarLoop]: Abstraction has 671 states and 1047 transitions. [2019-10-15 01:11:16,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:16,389 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1047 transitions. [2019-10-15 01:11:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:11:16,391 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:16,391 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:16,392 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:16,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:16,392 INFO L82 PathProgramCache]: Analyzing trace with hash -24823679, now seen corresponding path program 1 times [2019-10-15 01:11:16,392 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:16,393 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282526808] [2019-10-15 01:11:16,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:16,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282526808] [2019-10-15 01:11:16,569 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:16,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:16,570 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563338652] [2019-10-15 01:11:16,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:16,571 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:16,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:16,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:16,571 INFO L87 Difference]: Start difference. First operand 671 states and 1047 transitions. Second operand 7 states. [2019-10-15 01:11:16,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:16,675 INFO L93 Difference]: Finished difference Result 1313 states and 2067 transitions. [2019-10-15 01:11:16,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:16,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-15 01:11:16,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:16,683 INFO L225 Difference]: With dead ends: 1313 [2019-10-15 01:11:16,683 INFO L226 Difference]: Without dead ends: 665 [2019-10-15 01:11:16,688 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:16,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2019-10-15 01:11:16,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2019-10-15 01:11:16,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2019-10-15 01:11:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1034 transitions. [2019-10-15 01:11:16,719 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1034 transitions. Word has length 95 [2019-10-15 01:11:16,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:16,719 INFO L462 AbstractCegarLoop]: Abstraction has 665 states and 1034 transitions. [2019-10-15 01:11:16,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1034 transitions. [2019-10-15 01:11:16,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:11:16,722 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:16,722 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:16,722 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:16,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:16,723 INFO L82 PathProgramCache]: Analyzing trace with hash 871502165, now seen corresponding path program 1 times [2019-10-15 01:11:16,723 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:16,723 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404968756] [2019-10-15 01:11:16,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:16,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:16,945 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404968756] [2019-10-15 01:11:16,946 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:16,946 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:16,946 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373678143] [2019-10-15 01:11:16,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:16,947 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:16,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:16,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:16,948 INFO L87 Difference]: Start difference. First operand 665 states and 1034 transitions. Second operand 7 states. [2019-10-15 01:11:17,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:17,049 INFO L93 Difference]: Finished difference Result 1301 states and 2041 transitions. [2019-10-15 01:11:17,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:17,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-15 01:11:17,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:17,060 INFO L225 Difference]: With dead ends: 1301 [2019-10-15 01:11:17,060 INFO L226 Difference]: Without dead ends: 659 [2019-10-15 01:11:17,067 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-15 01:11:17,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2019-10-15 01:11:17,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-10-15 01:11:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1021 transitions. [2019-10-15 01:11:17,094 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1021 transitions. Word has length 96 [2019-10-15 01:11:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:17,095 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 1021 transitions. [2019-10-15 01:11:17,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:17,095 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1021 transitions. [2019-10-15 01:11:17,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:11:17,098 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:17,099 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:17,099 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:17,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:17,100 INFO L82 PathProgramCache]: Analyzing trace with hash -2034523306, now seen corresponding path program 1 times [2019-10-15 01:11:17,100 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:17,100 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043252186] [2019-10-15 01:11:17,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:17,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:17,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:17,273 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043252186] [2019-10-15 01:11:17,274 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:17,275 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:17,275 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433064785] [2019-10-15 01:11:17,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:17,276 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:17,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:17,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:17,276 INFO L87 Difference]: Start difference. First operand 659 states and 1021 transitions. Second operand 7 states. [2019-10-15 01:11:17,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:17,376 INFO L93 Difference]: Finished difference Result 1289 states and 2015 transitions. [2019-10-15 01:11:17,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:17,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-15 01:11:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:17,387 INFO L225 Difference]: With dead ends: 1289 [2019-10-15 01:11:17,387 INFO L226 Difference]: Without dead ends: 659 [2019-10-15 01:11:17,391 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:17,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-15 01:11:17,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2019-10-15 01:11:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-10-15 01:11:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1020 transitions. [2019-10-15 01:11:17,432 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1020 transitions. Word has length 96 [2019-10-15 01:11:17,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:17,433 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 1020 transitions. [2019-10-15 01:11:17,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:17,433 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1020 transitions. [2019-10-15 01:11:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 01:11:17,436 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:17,437 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:17,437 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:17,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:17,437 INFO L82 PathProgramCache]: Analyzing trace with hash 732987941, now seen corresponding path program 1 times [2019-10-15 01:11:17,438 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:17,438 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642989026] [2019-10-15 01:11:17,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:17,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:17,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:17,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642989026] [2019-10-15 01:11:17,621 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:17,621 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:11:17,621 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367192524] [2019-10-15 01:11:17,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:11:17,622 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:17,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:11:17,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:17,623 INFO L87 Difference]: Start difference. First operand 659 states and 1020 transitions. Second operand 5 states. [2019-10-15 01:11:17,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:17,805 INFO L93 Difference]: Finished difference Result 1288 states and 2012 transitions. [2019-10-15 01:11:17,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:17,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-10-15 01:11:17,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:17,811 INFO L225 Difference]: With dead ends: 1288 [2019-10-15 01:11:17,812 INFO L226 Difference]: Without dead ends: 659 [2019-10-15 01:11:17,815 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:17,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-15 01:11:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2019-10-15 01:11:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-10-15 01:11:17,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1019 transitions. [2019-10-15 01:11:17,844 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1019 transitions. Word has length 97 [2019-10-15 01:11:17,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:17,844 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 1019 transitions. [2019-10-15 01:11:17,844 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:11:17,844 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1019 transitions. [2019-10-15 01:11:17,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 01:11:17,848 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:17,849 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:17,850 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:17,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1341451385, now seen corresponding path program 1 times [2019-10-15 01:11:17,851 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:17,851 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223119473] [2019-10-15 01:11:17,852 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:17,852 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:17,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:18,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223119473] [2019-10-15 01:11:18,031 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:18,031 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:11:18,031 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902206881] [2019-10-15 01:11:18,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:11:18,032 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:18,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:11:18,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:18,033 INFO L87 Difference]: Start difference. First operand 659 states and 1019 transitions. Second operand 5 states. [2019-10-15 01:11:18,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:18,113 INFO L93 Difference]: Finished difference Result 1288 states and 2010 transitions. [2019-10-15 01:11:18,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:18,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-10-15 01:11:18,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:18,119 INFO L225 Difference]: With dead ends: 1288 [2019-10-15 01:11:18,119 INFO L226 Difference]: Without dead ends: 659 [2019-10-15 01:11:18,123 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:18,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-15 01:11:18,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2019-10-15 01:11:18,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-10-15 01:11:18,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1018 transitions. [2019-10-15 01:11:18,148 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1018 transitions. Word has length 98 [2019-10-15 01:11:18,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:18,149 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 1018 transitions. [2019-10-15 01:11:18,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:11:18,149 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1018 transitions. [2019-10-15 01:11:18,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 01:11:18,150 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:18,151 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:18,151 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:18,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:18,151 INFO L82 PathProgramCache]: Analyzing trace with hash -671623232, now seen corresponding path program 1 times [2019-10-15 01:11:18,152 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:18,152 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438589145] [2019-10-15 01:11:18,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:18,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:18,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:18,283 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438589145] [2019-10-15 01:11:18,283 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:18,284 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:11:18,284 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405864832] [2019-10-15 01:11:18,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:11:18,285 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:18,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:11:18,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:18,285 INFO L87 Difference]: Start difference. First operand 659 states and 1018 transitions. Second operand 5 states. [2019-10-15 01:11:18,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:18,360 INFO L93 Difference]: Finished difference Result 1288 states and 2008 transitions. [2019-10-15 01:11:18,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:18,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-10-15 01:11:18,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:18,366 INFO L225 Difference]: With dead ends: 1288 [2019-10-15 01:11:18,366 INFO L226 Difference]: Without dead ends: 659 [2019-10-15 01:11:18,370 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:18,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-15 01:11:18,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2019-10-15 01:11:18,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-10-15 01:11:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1017 transitions. [2019-10-15 01:11:18,394 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1017 transitions. Word has length 99 [2019-10-15 01:11:18,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:18,394 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 1017 transitions. [2019-10-15 01:11:18,394 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:11:18,394 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1017 transitions. [2019-10-15 01:11:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 01:11:18,396 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:18,396 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:18,396 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:18,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:18,397 INFO L82 PathProgramCache]: Analyzing trace with hash -828849150, now seen corresponding path program 1 times [2019-10-15 01:11:18,397 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:18,397 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068272558] [2019-10-15 01:11:18,397 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:18,398 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:18,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:18,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:18,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068272558] [2019-10-15 01:11:18,526 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:18,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:11:18,527 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813205768] [2019-10-15 01:11:18,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:11:18,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:18,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:11:18,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:18,528 INFO L87 Difference]: Start difference. First operand 659 states and 1017 transitions. Second operand 5 states. [2019-10-15 01:11:18,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:18,603 INFO L93 Difference]: Finished difference Result 1288 states and 2006 transitions. [2019-10-15 01:11:18,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:18,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-15 01:11:18,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:18,611 INFO L225 Difference]: With dead ends: 1288 [2019-10-15 01:11:18,611 INFO L226 Difference]: Without dead ends: 659 [2019-10-15 01:11:18,616 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:18,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-15 01:11:18,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2019-10-15 01:11:18,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-10-15 01:11:18,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1016 transitions. [2019-10-15 01:11:18,648 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1016 transitions. Word has length 100 [2019-10-15 01:11:18,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:18,649 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 1016 transitions. [2019-10-15 01:11:18,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:11:18,649 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1016 transitions. [2019-10-15 01:11:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 01:11:18,652 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:18,652 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:18,652 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:18,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:18,653 INFO L82 PathProgramCache]: Analyzing trace with hash -854947493, now seen corresponding path program 1 times [2019-10-15 01:11:18,653 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:18,654 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632286522] [2019-10-15 01:11:18,654 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:18,654 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:18,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:11:18,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632286522] [2019-10-15 01:11:18,926 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213493113] [2019-10-15 01:11:18,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:19,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:11:19,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:19,645 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:19,810 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:19,811 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:11:19,811 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950175992] [2019-10-15 01:11:19,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:11:19,812 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:19,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:11:19,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:11:19,812 INFO L87 Difference]: Start difference. First operand 659 states and 1016 transitions. Second operand 3 states. [2019-10-15 01:11:19,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:19,909 INFO L93 Difference]: Finished difference Result 1856 states and 2908 transitions. [2019-10-15 01:11:19,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:11:19,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2019-10-15 01:11:19,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:19,920 INFO L225 Difference]: With dead ends: 1856 [2019-10-15 01:11:19,920 INFO L226 Difference]: Without dead ends: 1231 [2019-10-15 01:11:19,925 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:11:19,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2019-10-15 01:11:19,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1218. [2019-10-15 01:11:19,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2019-10-15 01:11:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1895 transitions. [2019-10-15 01:11:19,981 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1895 transitions. Word has length 101 [2019-10-15 01:11:19,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:19,982 INFO L462 AbstractCegarLoop]: Abstraction has 1218 states and 1895 transitions. [2019-10-15 01:11:19,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:11:19,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1895 transitions. [2019-10-15 01:11:19,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-15 01:11:19,984 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:19,984 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:20,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:20,196 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:20,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:20,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1356324602, now seen corresponding path program 1 times [2019-10-15 01:11:20,196 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:20,196 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658120047] [2019-10-15 01:11:20,196 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:20,197 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:20,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:11:20,405 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658120047] [2019-10-15 01:11:20,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999560129] [2019-10-15 01:11:20,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:21,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:11:21,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:21,175 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:21,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:21,291 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:21,292 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:11:21,292 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634249217] [2019-10-15 01:11:21,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:11:21,293 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:21,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:11:21,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:11:21,294 INFO L87 Difference]: Start difference. First operand 1218 states and 1895 transitions. Second operand 3 states. [2019-10-15 01:11:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:21,427 INFO L93 Difference]: Finished difference Result 2974 states and 4668 transitions. [2019-10-15 01:11:21,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:11:21,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-10-15 01:11:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:21,443 INFO L225 Difference]: With dead ends: 2974 [2019-10-15 01:11:21,443 INFO L226 Difference]: Without dead ends: 1790 [2019-10-15 01:11:21,493 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:11:21,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2019-10-15 01:11:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1741. [2019-10-15 01:11:21,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1741 states. [2019-10-15 01:11:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2727 transitions. [2019-10-15 01:11:21,571 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2727 transitions. Word has length 102 [2019-10-15 01:11:21,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:21,572 INFO L462 AbstractCegarLoop]: Abstraction has 1741 states and 2727 transitions. [2019-10-15 01:11:21,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:11:21,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2727 transitions. [2019-10-15 01:11:21,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-15 01:11:21,574 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:21,574 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:21,787 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:21,788 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:21,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:21,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1616993806, now seen corresponding path program 1 times [2019-10-15 01:11:21,789 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:21,789 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321339792] [2019-10-15 01:11:21,790 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:21,790 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:21,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:21,999 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321339792] [2019-10-15 01:11:22,000 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:22,000 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:22,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147106186] [2019-10-15 01:11:22,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:22,002 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:22,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:22,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:22,003 INFO L87 Difference]: Start difference. First operand 1741 states and 2727 transitions. Second operand 7 states. [2019-10-15 01:11:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:25,201 INFO L93 Difference]: Finished difference Result 5133 states and 8256 transitions. [2019-10-15 01:11:25,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:11:25,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2019-10-15 01:11:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:25,232 INFO L225 Difference]: With dead ends: 5133 [2019-10-15 01:11:25,233 INFO L226 Difference]: Without dead ends: 3426 [2019-10-15 01:11:25,244 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:11:25,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2019-10-15 01:11:25,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3356. [2019-10-15 01:11:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3356 states. [2019-10-15 01:11:25,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 5349 transitions. [2019-10-15 01:11:25,417 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 5349 transitions. Word has length 104 [2019-10-15 01:11:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:25,417 INFO L462 AbstractCegarLoop]: Abstraction has 3356 states and 5349 transitions. [2019-10-15 01:11:25,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 5349 transitions. [2019-10-15 01:11:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-15 01:11:25,420 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:25,420 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:25,420 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:25,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:25,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1816468707, now seen corresponding path program 1 times [2019-10-15 01:11:25,421 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:25,421 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065797858] [2019-10-15 01:11:25,421 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,421 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:11:25,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065797858] [2019-10-15 01:11:25,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325805795] [2019-10-15 01:11:25,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:26,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:11:26,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:11:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:26,472 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:11:26,603 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:11:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:26,785 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:11:26,785 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-15 01:11:26,785 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966657169] [2019-10-15 01:11:26,788 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:11:26,789 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:26,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:11:26,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:11:26,790 INFO L87 Difference]: Start difference. First operand 3356 states and 5349 transitions. Second operand 11 states. [2019-10-15 01:11:32,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:32,609 INFO L93 Difference]: Finished difference Result 15098 states and 24580 transitions. [2019-10-15 01:11:32,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 01:11:32,609 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2019-10-15 01:11:32,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:32,786 INFO L225 Difference]: With dead ends: 15098 [2019-10-15 01:11:32,786 INFO L226 Difference]: Without dead ends: 11776 [2019-10-15 01:11:32,816 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:11:32,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11776 states. [2019-10-15 01:11:33,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11776 to 11656. [2019-10-15 01:11:33,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11656 states. [2019-10-15 01:11:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11656 states to 11656 states and 18502 transitions. [2019-10-15 01:11:33,426 INFO L78 Accepts]: Start accepts. Automaton has 11656 states and 18502 transitions. Word has length 105 [2019-10-15 01:11:33,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:33,426 INFO L462 AbstractCegarLoop]: Abstraction has 11656 states and 18502 transitions. [2019-10-15 01:11:33,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:11:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 11656 states and 18502 transitions. [2019-10-15 01:11:33,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-15 01:11:33,428 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:33,428 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:33,637 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:33,637 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:33,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:33,638 INFO L82 PathProgramCache]: Analyzing trace with hash -858255289, now seen corresponding path program 1 times [2019-10-15 01:11:33,638 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:33,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476429643] [2019-10-15 01:11:33,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:33,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:33,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:33,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476429643] [2019-10-15 01:11:33,772 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:33,773 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:33,773 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734459500] [2019-10-15 01:11:33,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:33,774 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:33,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:33,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:33,775 INFO L87 Difference]: Start difference. First operand 11656 states and 18502 transitions. Second operand 4 states. [2019-10-15 01:11:34,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:34,248 INFO L93 Difference]: Finished difference Result 23296 states and 37303 transitions. [2019-10-15 01:11:34,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:34,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-10-15 01:11:34,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:34,357 INFO L225 Difference]: With dead ends: 23296 [2019-10-15 01:11:34,357 INFO L226 Difference]: Without dead ends: 11674 [2019-10-15 01:11:34,419 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:34,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11674 states. [2019-10-15 01:11:35,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11674 to 11638. [2019-10-15 01:11:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11638 states. [2019-10-15 01:11:35,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11638 states to 11638 states and 18401 transitions. [2019-10-15 01:11:35,676 INFO L78 Accepts]: Start accepts. Automaton has 11638 states and 18401 transitions. Word has length 105 [2019-10-15 01:11:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:35,677 INFO L462 AbstractCegarLoop]: Abstraction has 11638 states and 18401 transitions. [2019-10-15 01:11:35,677 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 11638 states and 18401 transitions. [2019-10-15 01:11:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 01:11:35,680 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:35,681 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:11:35,681 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:35,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:35,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1903052190, now seen corresponding path program 1 times [2019-10-15 01:11:35,682 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:35,682 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427092799] [2019-10-15 01:11:35,682 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:35,682 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:35,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:11:35,824 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427092799] [2019-10-15 01:11:35,824 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:35,824 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:35,824 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817730485] [2019-10-15 01:11:35,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:35,826 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:35,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:35,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:35,827 INFO L87 Difference]: Start difference. First operand 11638 states and 18401 transitions. Second operand 7 states. [2019-10-15 01:11:39,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:39,812 INFO L93 Difference]: Finished difference Result 34894 states and 57146 transitions. [2019-10-15 01:11:39,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:11:39,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-15 01:11:39,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:39,996 INFO L225 Difference]: With dead ends: 34894 [2019-10-15 01:11:39,997 INFO L226 Difference]: Without dead ends: 23290 [2019-10-15 01:11:40,052 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:11:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23290 states. [2019-10-15 01:11:40,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23290 to 23104. [2019-10-15 01:11:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23104 states.