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_spec2_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:09:55,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:09:55,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:09:55,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:09:55,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:09:55,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:09:55,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:09:55,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:09:55,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:09:55,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:09:55,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:09:55,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:09:55,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:09:55,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:09:55,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:09:55,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:09:55,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:09:55,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:09:55,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:09:55,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:09:55,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:09:55,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:09:55,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:09:55,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:09:55,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:09:55,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:09:55,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:09:55,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:09:55,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:09:55,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:09:55,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:09:55,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:09:55,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:09:55,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:09:55,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:09:55,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:09:55,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:09:55,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:09:55,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:09:55,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:09:55,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:09:55,760 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 01:09:55,777 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:09:55,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:09:55,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:09:55,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:09:55,779 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:09:55,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:09:55,779 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:09:55,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:09:55,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:09:55,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:09:55,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:09:55,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:09:55,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:09:55,781 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:09:55,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:09:55,781 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:09:55,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:09:55,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:09:55,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:09:55,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:09:55,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:09:55,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:09:55,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:09:55,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:09:55,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:09:55,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:09:55,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:09:55,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:09:55,784 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 01:09:56,085 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:09:56,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:09:56,102 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:09:56,103 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:09:56,104 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:09:56,105 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product23.cil.c [2019-10-15 01:09:56,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe7868f9/8ab8d46cc64042a6b2529a0fc0f022da/FLAG5682569fb [2019-10-15 01:09:56,878 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:09:56,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product23.cil.c [2019-10-15 01:09:56,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe7868f9/8ab8d46cc64042a6b2529a0fc0f022da/FLAG5682569fb [2019-10-15 01:09:57,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe7868f9/8ab8d46cc64042a6b2529a0fc0f022da [2019-10-15 01:09:57,022 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:09:57,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:09:57,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:09:57,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:09:57,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:09:57,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:09:57" (1/1) ... [2019-10-15 01:09:57,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510c1389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:57, skipping insertion in model container [2019-10-15 01:09:57,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:09:57" (1/1) ... [2019-10-15 01:09:57,040 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:09:57,121 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:09:57,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:09:57,903 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:09:58,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:09:58,151 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:09:58,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:58 WrapperNode [2019-10-15 01:09:58,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:09:58,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:09:58,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:09:58,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:09:58,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:58" (1/1) ... [2019-10-15 01:09:58,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:58" (1/1) ... [2019-10-15 01:09:58,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:58" (1/1) ... [2019-10-15 01:09:58,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:58" (1/1) ... [2019-10-15 01:09:58,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:58" (1/1) ... [2019-10-15 01:09:58,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:58" (1/1) ... [2019-10-15 01:09:58,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:58" (1/1) ... [2019-10-15 01:09:58,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:09:58,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:09:58,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:09:58,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:09:58,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:58" (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 01:09:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:09:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:09:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:09:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 01:09:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 01:09:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 01:09:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 01:09:58,503 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:09:58,503 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:09:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:09:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:09:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:09:58,505 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:09:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:09:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:09:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:09:58,508 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:09:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:09:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:09:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:09:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:09:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:09:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:09:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:09:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:09:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:09:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:09:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:09:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:09:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:09:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:09:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:09:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:09:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:09:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:09:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:09:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:09:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:09:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:09:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:09:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:09:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:09:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:09:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:09:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:09:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:09:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:09:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:09:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:09:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:09:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:09:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:09:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:09:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:09:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:09:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:09:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:09:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:09:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:09:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:09:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:09:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:09:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:09:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:09:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:09:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:09:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:09:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:09:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:09:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:09:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:09:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:09:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:09:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:09:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:09:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:09:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:09:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:09:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:09:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:09:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:09:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:09:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:09:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:09:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:09:58,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 01:09:58,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 01:09:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 01:09:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 01:09:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:09:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:09:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:09:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:09:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:09:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:09:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:09:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:09:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:09:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:09:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:09:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:09:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:09:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:09:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:09:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:09:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:09:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:09:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:09:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:09:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:09:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:09:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:09:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:09:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:09:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:09:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:09:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:09:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:09:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:09:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:09:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:09:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:09:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:09:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:09:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:09:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:09:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:09:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:09:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:09:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:09:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:09:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:09:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:09:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:09:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:09:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:09:58,542 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:09:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:09:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:09:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:09:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:09:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:09:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:09:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:09:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:09:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:09:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:09:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:09:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:09:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:09:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:09:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:09:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:09:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:09:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:09:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:09:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:09:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:09:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:09:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:09:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:09:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:09:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:09:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:09:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:09:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:09:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:09:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:09:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:09:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:09:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:09:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:09:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:09:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:09:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:10:01,039 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:10:01,040 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:10:01,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:01 BoogieIcfgContainer [2019-10-15 01:10:01,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:10:01,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:10:01,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:10:01,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:10:01,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:09:57" (1/3) ... [2019-10-15 01:10:01,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba35328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:01, skipping insertion in model container [2019-10-15 01:10:01,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:58" (2/3) ... [2019-10-15 01:10:01,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba35328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:01, skipping insertion in model container [2019-10-15 01:10:01,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:01" (3/3) ... [2019-10-15 01:10:01,057 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product23.cil.c [2019-10-15 01:10:01,070 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:10:01,082 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:10:01,097 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:10:01,151 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:10:01,151 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:10:01,151 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:10:01,151 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:10:01,152 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:10:01,152 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:10:01,152 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:10:01,152 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:10:01,196 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states. [2019-10-15 01:10:01,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 01:10:01,231 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:01,233 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:01,235 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:01,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:01,239 INFO L82 PathProgramCache]: Analyzing trace with hash -425142213, now seen corresponding path program 1 times [2019-10-15 01:10:01,249 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:01,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424644045] [2019-10-15 01:10:01,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:01,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:01,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:01,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424644045] [2019-10-15 01:10:01,879 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:01,880 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:01,880 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507736014] [2019-10-15 01:10:01,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:01,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:01,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:01,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:01,906 INFO L87 Difference]: Start difference. First operand 801 states. Second operand 4 states. [2019-10-15 01:10:02,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:02,115 INFO L93 Difference]: Finished difference Result 1265 states and 2029 transitions. [2019-10-15 01:10:02,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:02,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2019-10-15 01:10:02,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:02,156 INFO L225 Difference]: With dead ends: 1265 [2019-10-15 01:10:02,156 INFO L226 Difference]: Without dead ends: 641 [2019-10-15 01:10:02,166 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 01:10:02,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2019-10-15 01:10:02,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2019-10-15 01:10:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2019-10-15 01:10:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1016 transitions. [2019-10-15 01:10:02,334 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1016 transitions. Word has length 133 [2019-10-15 01:10:02,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:02,335 INFO L462 AbstractCegarLoop]: Abstraction has 641 states and 1016 transitions. [2019-10-15 01:10:02,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1016 transitions. [2019-10-15 01:10:02,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-15 01:10:02,343 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:02,344 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:02,344 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:02,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:02,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1746655412, now seen corresponding path program 1 times [2019-10-15 01:10:02,345 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:02,345 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645581383] [2019-10-15 01:10:02,345 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:02,345 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:02,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:02,606 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:02,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645581383] [2019-10-15 01:10:02,607 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:02,607 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:02,607 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674904255] [2019-10-15 01:10:02,615 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:02,616 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:02,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:02,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:02,616 INFO L87 Difference]: Start difference. First operand 641 states and 1016 transitions. Second operand 4 states. [2019-10-15 01:10:02,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:02,718 INFO L93 Difference]: Finished difference Result 1245 states and 1990 transitions. [2019-10-15 01:10:02,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:02,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2019-10-15 01:10:02,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:02,732 INFO L225 Difference]: With dead ends: 1245 [2019-10-15 01:10:02,733 INFO L226 Difference]: Without dead ends: 641 [2019-10-15 01:10:02,751 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 01:10:02,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2019-10-15 01:10:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2019-10-15 01:10:02,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2019-10-15 01:10:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1015 transitions. [2019-10-15 01:10:02,806 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1015 transitions. Word has length 136 [2019-10-15 01:10:02,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:02,809 INFO L462 AbstractCegarLoop]: Abstraction has 641 states and 1015 transitions. [2019-10-15 01:10:02,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:02,809 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1015 transitions. [2019-10-15 01:10:02,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-15 01:10:02,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:02,816 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:02,816 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:02,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:02,817 INFO L82 PathProgramCache]: Analyzing trace with hash -323937366, now seen corresponding path program 1 times [2019-10-15 01:10:02,817 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:02,817 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403386561] [2019-10-15 01:10:02,818 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:02,818 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:02,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:03,094 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403386561] [2019-10-15 01:10:03,095 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:03,095 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:03,095 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937001390] [2019-10-15 01:10:03,097 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:03,097 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:03,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:03,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:03,098 INFO L87 Difference]: Start difference. First operand 641 states and 1015 transitions. Second operand 4 states. [2019-10-15 01:10:03,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:03,162 INFO L93 Difference]: Finished difference Result 1245 states and 1989 transitions. [2019-10-15 01:10:03,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:03,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2019-10-15 01:10:03,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:03,169 INFO L225 Difference]: With dead ends: 1245 [2019-10-15 01:10:03,169 INFO L226 Difference]: Without dead ends: 641 [2019-10-15 01:10:03,173 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 01:10:03,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2019-10-15 01:10:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2019-10-15 01:10:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2019-10-15 01:10:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1014 transitions. [2019-10-15 01:10:03,205 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1014 transitions. Word has length 137 [2019-10-15 01:10:03,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:03,206 INFO L462 AbstractCegarLoop]: Abstraction has 641 states and 1014 transitions. [2019-10-15 01:10:03,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1014 transitions. [2019-10-15 01:10:03,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 01:10:03,211 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:03,211 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:03,211 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:03,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:03,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1604183312, now seen corresponding path program 1 times [2019-10-15 01:10:03,212 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:03,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271314985] [2019-10-15 01:10:03,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:03,213 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:03,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:03,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:03,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271314985] [2019-10-15 01:10:03,340 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:03,341 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:03,341 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96982299] [2019-10-15 01:10:03,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:03,342 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:03,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:03,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:03,342 INFO L87 Difference]: Start difference. First operand 641 states and 1014 transitions. Second operand 4 states. [2019-10-15 01:10:03,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:03,409 INFO L93 Difference]: Finished difference Result 1245 states and 1988 transitions. [2019-10-15 01:10:03,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:03,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2019-10-15 01:10:03,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:03,415 INFO L225 Difference]: With dead ends: 1245 [2019-10-15 01:10:03,415 INFO L226 Difference]: Without dead ends: 641 [2019-10-15 01:10:03,419 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 01:10:03,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2019-10-15 01:10:03,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2019-10-15 01:10:03,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2019-10-15 01:10:03,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1013 transitions. [2019-10-15 01:10:03,447 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1013 transitions. Word has length 138 [2019-10-15 01:10:03,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:03,447 INFO L462 AbstractCegarLoop]: Abstraction has 641 states and 1013 transitions. [2019-10-15 01:10:03,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:03,448 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1013 transitions. [2019-10-15 01:10:03,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-15 01:10:03,452 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:03,452 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:03,453 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:03,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:03,453 INFO L82 PathProgramCache]: Analyzing trace with hash 141486054, now seen corresponding path program 1 times [2019-10-15 01:10:03,453 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:03,454 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059776793] [2019-10-15 01:10:03,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:03,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:03,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:03,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059776793] [2019-10-15 01:10:03,582 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:03,582 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:03,582 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155929516] [2019-10-15 01:10:03,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:03,583 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:03,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:03,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:03,584 INFO L87 Difference]: Start difference. First operand 641 states and 1013 transitions. Second operand 4 states. [2019-10-15 01:10:03,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:03,648 INFO L93 Difference]: Finished difference Result 1245 states and 1987 transitions. [2019-10-15 01:10:03,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:03,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2019-10-15 01:10:03,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:03,655 INFO L225 Difference]: With dead ends: 1245 [2019-10-15 01:10:03,656 INFO L226 Difference]: Without dead ends: 641 [2019-10-15 01:10:03,660 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 01:10:03,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2019-10-15 01:10:03,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2019-10-15 01:10:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2019-10-15 01:10:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1012 transitions. [2019-10-15 01:10:03,748 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1012 transitions. Word has length 139 [2019-10-15 01:10:03,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:03,749 INFO L462 AbstractCegarLoop]: Abstraction has 641 states and 1012 transitions. [2019-10-15 01:10:03,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:03,749 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1012 transitions. [2019-10-15 01:10:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 01:10:03,754 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:03,754 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:03,755 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:03,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:03,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1201249580, now seen corresponding path program 1 times [2019-10-15 01:10:03,755 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:03,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236701094] [2019-10-15 01:10:03,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:03,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:03,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:03,963 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236701094] [2019-10-15 01:10:03,964 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:03,965 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:10:03,965 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249643089] [2019-10-15 01:10:03,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:10:03,966 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:03,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:10:03,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:10:03,966 INFO L87 Difference]: Start difference. First operand 641 states and 1012 transitions. Second operand 10 states. [2019-10-15 01:10:04,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:04,154 INFO L93 Difference]: Finished difference Result 1203 states and 1907 transitions. [2019-10-15 01:10:04,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:10:04,155 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 140 [2019-10-15 01:10:04,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:04,161 INFO L225 Difference]: With dead ends: 1203 [2019-10-15 01:10:04,161 INFO L226 Difference]: Without dead ends: 650 [2019-10-15 01:10:04,166 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:10:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-10-15 01:10:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 648. [2019-10-15 01:10:04,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-10-15 01:10:04,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1021 transitions. [2019-10-15 01:10:04,200 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1021 transitions. Word has length 140 [2019-10-15 01:10:04,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:04,201 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 1021 transitions. [2019-10-15 01:10:04,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:10:04,201 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1021 transitions. [2019-10-15 01:10:04,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 01:10:04,210 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:04,210 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:04,211 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:04,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:04,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1895896587, now seen corresponding path program 1 times [2019-10-15 01:10:04,211 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:04,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184053097] [2019-10-15 01:10:04,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:04,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:04,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:04,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184053097] [2019-10-15 01:10:04,335 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:04,335 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:04,335 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012422325] [2019-10-15 01:10:04,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:04,336 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:04,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:04,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:04,336 INFO L87 Difference]: Start difference. First operand 648 states and 1021 transitions. Second operand 4 states. [2019-10-15 01:10:04,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:04,397 INFO L93 Difference]: Finished difference Result 1251 states and 1993 transitions. [2019-10-15 01:10:04,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:04,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2019-10-15 01:10:04,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:04,404 INFO L225 Difference]: With dead ends: 1251 [2019-10-15 01:10:04,405 INFO L226 Difference]: Without dead ends: 635 [2019-10-15 01:10:04,409 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 01:10:04,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-15 01:10:04,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-10-15 01:10:04,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-15 01:10:04,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 998 transitions. [2019-10-15 01:10:04,435 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 998 transitions. Word has length 140 [2019-10-15 01:10:04,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:04,435 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 998 transitions. [2019-10-15 01:10:04,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 998 transitions. [2019-10-15 01:10:04,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 01:10:04,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:04,440 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:04,441 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:04,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:04,441 INFO L82 PathProgramCache]: Analyzing trace with hash 150537756, now seen corresponding path program 1 times [2019-10-15 01:10:04,441 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:04,441 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997489261] [2019-10-15 01:10:04,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:04,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:04,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:04,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997489261] [2019-10-15 01:10:04,671 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:04,671 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:04,671 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658256040] [2019-10-15 01:10:04,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:04,672 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:04,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:04,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:04,672 INFO L87 Difference]: Start difference. First operand 635 states and 998 transitions. Second operand 6 states. [2019-10-15 01:10:04,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:04,891 INFO L93 Difference]: Finished difference Result 1191 states and 1885 transitions. [2019-10-15 01:10:04,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:04,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2019-10-15 01:10:04,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:04,897 INFO L225 Difference]: With dead ends: 1191 [2019-10-15 01:10:04,898 INFO L226 Difference]: Without dead ends: 635 [2019-10-15 01:10:04,903 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:04,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-15 01:10:04,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-10-15 01:10:04,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-15 01:10:04,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 994 transitions. [2019-10-15 01:10:04,941 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 994 transitions. Word has length 141 [2019-10-15 01:10:04,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:04,943 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 994 transitions. [2019-10-15 01:10:04,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 994 transitions. [2019-10-15 01:10:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-15 01:10:04,947 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:04,948 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:04,948 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:04,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1298093967, now seen corresponding path program 1 times [2019-10-15 01:10:04,949 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:04,949 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560171363] [2019-10-15 01:10:04,949 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:04,949 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:04,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:05,102 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560171363] [2019-10-15 01:10:05,103 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:05,103 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:05,104 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243301797] [2019-10-15 01:10:05,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:05,105 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:05,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:05,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:05,106 INFO L87 Difference]: Start difference. First operand 635 states and 994 transitions. Second operand 6 states. [2019-10-15 01:10:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:05,324 INFO L93 Difference]: Finished difference Result 1191 states and 1881 transitions. [2019-10-15 01:10:05,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:05,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2019-10-15 01:10:05,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:05,332 INFO L225 Difference]: With dead ends: 1191 [2019-10-15 01:10:05,332 INFO L226 Difference]: Without dead ends: 635 [2019-10-15 01:10:05,335 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:05,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-15 01:10:05,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-10-15 01:10:05,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-15 01:10:05,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 990 transitions. [2019-10-15 01:10:05,357 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 990 transitions. Word has length 142 [2019-10-15 01:10:05,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:05,357 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 990 transitions. [2019-10-15 01:10:05,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:05,357 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 990 transitions. [2019-10-15 01:10:05,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 01:10:05,362 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:05,362 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:05,362 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:05,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:05,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2074658687, now seen corresponding path program 1 times [2019-10-15 01:10:05,363 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:05,363 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049894853] [2019-10-15 01:10:05,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:05,364 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:05,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:05,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049894853] [2019-10-15 01:10:05,531 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:05,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:05,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774130891] [2019-10-15 01:10:05,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:05,533 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:05,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:05,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:05,534 INFO L87 Difference]: Start difference. First operand 635 states and 990 transitions. Second operand 6 states. [2019-10-15 01:10:05,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:05,798 INFO L93 Difference]: Finished difference Result 1191 states and 1877 transitions. [2019-10-15 01:10:05,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:05,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2019-10-15 01:10:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:05,804 INFO L225 Difference]: With dead ends: 1191 [2019-10-15 01:10:05,804 INFO L226 Difference]: Without dead ends: 635 [2019-10-15 01:10:05,808 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:05,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-15 01:10:05,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-10-15 01:10:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-15 01:10:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 986 transitions. [2019-10-15 01:10:05,829 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 986 transitions. Word has length 143 [2019-10-15 01:10:05,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:05,830 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 986 transitions. [2019-10-15 01:10:05,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:05,830 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 986 transitions. [2019-10-15 01:10:05,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 01:10:05,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:05,836 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:05,836 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:05,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:05,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1020185343, now seen corresponding path program 1 times [2019-10-15 01:10:05,837 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:05,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961265977] [2019-10-15 01:10:05,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:05,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:05,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:05,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961265977] [2019-10-15 01:10:05,995 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:05,995 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:05,995 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667386463] [2019-10-15 01:10:05,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:05,996 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:05,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:05,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:05,997 INFO L87 Difference]: Start difference. First operand 635 states and 986 transitions. Second operand 7 states. [2019-10-15 01:10:06,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:06,077 INFO L93 Difference]: Finished difference Result 1191 states and 1873 transitions. [2019-10-15 01:10:06,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:06,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2019-10-15 01:10:06,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:06,083 INFO L225 Difference]: With dead ends: 1191 [2019-10-15 01:10:06,083 INFO L226 Difference]: Without dead ends: 614 [2019-10-15 01:10:06,087 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 01:10:06,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-15 01:10:06,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-10-15 01:10:06,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-15 01:10:06,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 952 transitions. [2019-10-15 01:10:06,114 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 952 transitions. Word has length 143 [2019-10-15 01:10:06,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:06,115 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 952 transitions. [2019-10-15 01:10:06,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:06,115 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 952 transitions. [2019-10-15 01:10:06,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-15 01:10:06,121 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:06,121 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:06,122 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:06,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:06,122 INFO L82 PathProgramCache]: Analyzing trace with hash 451901908, now seen corresponding path program 1 times [2019-10-15 01:10:06,123 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:06,123 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170916908] [2019-10-15 01:10:06,123 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:06,123 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:06,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:06,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170916908] [2019-10-15 01:10:06,293 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:06,293 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:06,294 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007631049] [2019-10-15 01:10:06,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:06,294 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:06,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:06,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:06,295 INFO L87 Difference]: Start difference. First operand 614 states and 952 transitions. Second operand 6 states. [2019-10-15 01:10:06,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:06,465 INFO L93 Difference]: Finished difference Result 1170 states and 1839 transitions. [2019-10-15 01:10:06,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:06,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2019-10-15 01:10:06,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:06,471 INFO L225 Difference]: With dead ends: 1170 [2019-10-15 01:10:06,471 INFO L226 Difference]: Without dead ends: 614 [2019-10-15 01:10:06,474 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:06,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-15 01:10:06,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-10-15 01:10:06,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-15 01:10:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 951 transitions. [2019-10-15 01:10:06,496 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 951 transitions. Word has length 144 [2019-10-15 01:10:06,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:06,497 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 951 transitions. [2019-10-15 01:10:06,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:06,498 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 951 transitions. [2019-10-15 01:10:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 01:10:06,502 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:06,502 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:06,502 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:06,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1173579494, now seen corresponding path program 1 times [2019-10-15 01:10:06,503 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:06,503 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939733019] [2019-10-15 01:10:06,503 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:06,503 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:06,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:06,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939733019] [2019-10-15 01:10:06,662 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:06,662 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:06,662 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598356519] [2019-10-15 01:10:06,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:06,667 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:06,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:06,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:06,668 INFO L87 Difference]: Start difference. First operand 614 states and 951 transitions. Second operand 6 states. [2019-10-15 01:10:06,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:06,765 INFO L93 Difference]: Finished difference Result 1170 states and 1838 transitions. [2019-10-15 01:10:06,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:06,766 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2019-10-15 01:10:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:06,771 INFO L225 Difference]: With dead ends: 1170 [2019-10-15 01:10:06,771 INFO L226 Difference]: Without dead ends: 614 [2019-10-15 01:10:06,775 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:06,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-15 01:10:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-10-15 01:10:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-15 01:10:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 950 transitions. [2019-10-15 01:10:06,796 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 950 transitions. Word has length 145 [2019-10-15 01:10:06,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:06,798 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 950 transitions. [2019-10-15 01:10:06,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:06,798 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 950 transitions. [2019-10-15 01:10:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 01:10:06,802 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:06,803 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:06,803 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:06,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:06,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1778458649, now seen corresponding path program 1 times [2019-10-15 01:10:06,808 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:06,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232406865] [2019-10-15 01:10:06,808 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:06,808 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:06,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:07,010 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:07,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232406865] [2019-10-15 01:10:07,011 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:07,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:10:07,011 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718784459] [2019-10-15 01:10:07,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:10:07,012 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:07,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:10:07,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:07,013 INFO L87 Difference]: Start difference. First operand 614 states and 950 transitions. Second operand 12 states. [2019-10-15 01:10:07,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:07,194 INFO L93 Difference]: Finished difference Result 1171 states and 1837 transitions. [2019-10-15 01:10:07,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:10:07,195 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 146 [2019-10-15 01:10:07,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:07,201 INFO L225 Difference]: With dead ends: 1171 [2019-10-15 01:10:07,201 INFO L226 Difference]: Without dead ends: 614 [2019-10-15 01:10:07,205 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:10:07,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-15 01:10:07,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-10-15 01:10:07,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-15 01:10:07,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 949 transitions. [2019-10-15 01:10:07,227 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 949 transitions. Word has length 146 [2019-10-15 01:10:07,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:07,227 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 949 transitions. [2019-10-15 01:10:07,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:10:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 949 transitions. [2019-10-15 01:10:07,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-15 01:10:07,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:07,233 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:07,233 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:07,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:07,234 INFO L82 PathProgramCache]: Analyzing trace with hash -15461549, now seen corresponding path program 1 times [2019-10-15 01:10:07,234 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:07,234 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291694938] [2019-10-15 01:10:07,234 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:07,234 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:07,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 01:10:07,481 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291694938] [2019-10-15 01:10:07,482 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148099392] [2019-10-15 01:10:07,482 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 01:10:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:08,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 2771 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:10:08,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:10:08,483 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:10:09,336 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:10:09,336 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 6] total 18 [2019-10-15 01:10:09,336 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788512506] [2019-10-15 01:10:09,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:09,340 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:09,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:09,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:10:09,341 INFO L87 Difference]: Start difference. First operand 614 states and 949 transitions. Second operand 5 states. [2019-10-15 01:10:10,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:10,250 INFO L93 Difference]: Finished difference Result 1170 states and 1865 transitions. [2019-10-15 01:10:10,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:10,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-10-15 01:10:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:10,256 INFO L225 Difference]: With dead ends: 1170 [2019-10-15 01:10:10,256 INFO L226 Difference]: Without dead ends: 622 [2019-10-15 01:10:10,261 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 293 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:10:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-10-15 01:10:10,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-10-15 01:10:10,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-10-15 01:10:10,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 962 transitions. [2019-10-15 01:10:10,321 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 962 transitions. Word has length 147 [2019-10-15 01:10:10,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:10,323 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 962 transitions. [2019-10-15 01:10:10,323 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:10,323 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 962 transitions. [2019-10-15 01:10:10,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:10:10,328 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:10,328 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:10,538 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:10,538 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:10,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:10,539 INFO L82 PathProgramCache]: Analyzing trace with hash 929312331, now seen corresponding path program 1 times [2019-10-15 01:10:10,540 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:10,540 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706218512] [2019-10-15 01:10:10,540 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:10,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:10,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:10:10,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706218512] [2019-10-15 01:10:10,772 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:10,772 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:10,772 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974634785] [2019-10-15 01:10:10,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:10,773 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:10,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:10,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:10,774 INFO L87 Difference]: Start difference. First operand 622 states and 962 transitions. Second operand 6 states. [2019-10-15 01:10:11,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:11,501 INFO L93 Difference]: Finished difference Result 1185 states and 1889 transitions. [2019-10-15 01:10:11,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:11,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2019-10-15 01:10:11,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:11,507 INFO L225 Difference]: With dead ends: 1185 [2019-10-15 01:10:11,507 INFO L226 Difference]: Without dead ends: 627 [2019-10-15 01:10:11,511 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:10:11,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2019-10-15 01:10:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2019-10-15 01:10:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2019-10-15 01:10:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 966 transitions. [2019-10-15 01:10:11,538 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 966 transitions. Word has length 149 [2019-10-15 01:10:11,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:11,547 INFO L462 AbstractCegarLoop]: Abstraction has 627 states and 966 transitions. [2019-10-15 01:10:11,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:11,547 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 966 transitions. [2019-10-15 01:10:11,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-15 01:10:11,551 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:11,552 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:11,552 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:11,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:11,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1155279277, now seen corresponding path program 1 times [2019-10-15 01:10:11,553 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:11,553 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542623739] [2019-10-15 01:10:11,553 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:11,553 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:11,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:10:11,747 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542623739] [2019-10-15 01:10:11,747 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129922710] [2019-10-15 01:10:11,747 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 01:10:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:12,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:10:12,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:10:12,640 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:10:13,401 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:10:13,402 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 6] total 18 [2019-10-15 01:10:13,402 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273513179] [2019-10-15 01:10:13,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:13,403 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:13,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:13,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:10:13,404 INFO L87 Difference]: Start difference. First operand 627 states and 966 transitions. Second operand 5 states. [2019-10-15 01:10:14,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:14,342 INFO L93 Difference]: Finished difference Result 1196 states and 1893 transitions. [2019-10-15 01:10:14,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:14,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2019-10-15 01:10:14,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:14,350 INFO L225 Difference]: With dead ends: 1196 [2019-10-15 01:10:14,350 INFO L226 Difference]: Without dead ends: 635 [2019-10-15 01:10:14,353 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 301 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:10:14,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-15 01:10:14,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-10-15 01:10:14,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-15 01:10:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 979 transitions. [2019-10-15 01:10:14,379 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 979 transitions. Word has length 151 [2019-10-15 01:10:14,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:14,379 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 979 transitions. [2019-10-15 01:10:14,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:14,380 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 979 transitions. [2019-10-15 01:10:14,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-15 01:10:14,384 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:14,384 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:14,592 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:14,593 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:14,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:14,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1174728509, now seen corresponding path program 1 times [2019-10-15 01:10:14,594 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:14,594 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447846765] [2019-10-15 01:10:14,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:14,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:14,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 01:10:14,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447846765] [2019-10-15 01:10:14,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447324700] [2019-10-15 01:10:14,844 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 01:10:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:15,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:10:15,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:10:15,718 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:16,449 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:10:16,449 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:10:16,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 6] total 17 [2019-10-15 01:10:16,450 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400474953] [2019-10-15 01:10:16,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:16,451 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:16,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:16,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:10:16,451 INFO L87 Difference]: Start difference. First operand 635 states and 979 transitions. Second operand 5 states. [2019-10-15 01:10:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:17,346 INFO L93 Difference]: Finished difference Result 1212 states and 1916 transitions. [2019-10-15 01:10:17,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:17,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2019-10-15 01:10:17,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:17,354 INFO L225 Difference]: With dead ends: 1212 [2019-10-15 01:10:17,354 INFO L226 Difference]: Without dead ends: 643 [2019-10-15 01:10:17,357 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 305 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:10:17,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-15 01:10:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-15 01:10:17,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-15 01:10:17,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 992 transitions. [2019-10-15 01:10:17,382 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 992 transitions. Word has length 153 [2019-10-15 01:10:17,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:17,382 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 992 transitions. [2019-10-15 01:10:17,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:17,383 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 992 transitions. [2019-10-15 01:10:17,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-15 01:10:17,387 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:17,387 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:17,594 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:17,595 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:17,595 INFO L82 PathProgramCache]: Analyzing trace with hash -658065581, now seen corresponding path program 1 times [2019-10-15 01:10:17,595 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:17,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500301712] [2019-10-15 01:10:17,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:17,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:17,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:10:17,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500301712] [2019-10-15 01:10:17,840 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846197071] [2019-10-15 01:10:17,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:18,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 2779 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:10:18,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 01:10:18,572 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:18,876 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 01:10:18,876 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:18,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [11] total 18 [2019-10-15 01:10:18,876 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053962205] [2019-10-15 01:10:18,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:10:18,877 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:18,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:10:18,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:10:18,878 INFO L87 Difference]: Start difference. First operand 643 states and 992 transitions. Second operand 9 states. [2019-10-15 01:10:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:19,883 INFO L93 Difference]: Finished difference Result 688 states and 1052 transitions. [2019-10-15 01:10:19,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:19,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 155 [2019-10-15 01:10:19,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:19,890 INFO L225 Difference]: With dead ends: 688 [2019-10-15 01:10:19,890 INFO L226 Difference]: Without dead ends: 671 [2019-10-15 01:10:19,891 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 313 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:10:19,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2019-10-15 01:10:19,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 657. [2019-10-15 01:10:19,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-15 01:10:19,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1011 transitions. [2019-10-15 01:10:19,916 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1011 transitions. Word has length 155 [2019-10-15 01:10:19,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:19,917 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1011 transitions. [2019-10-15 01:10:19,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:10:19,917 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1011 transitions. [2019-10-15 01:10:19,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:10:19,922 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:19,922 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:20,134 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:20,134 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:20,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:20,134 INFO L82 PathProgramCache]: Analyzing trace with hash 303357934, now seen corresponding path program 1 times [2019-10-15 01:10:20,135 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:20,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967928878] [2019-10-15 01:10:20,135 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:20,135 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:20,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:10:20,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967928878] [2019-10-15 01:10:20,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721595885] [2019-10-15 01:10:20,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:21,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 2795 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 01:10:21,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 01:10:21,096 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 01:10:21,364 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:21,364 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [11] total 14 [2019-10-15 01:10:21,365 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695549568] [2019-10-15 01:10:21,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:21,365 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:21,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:21,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:10:21,366 INFO L87 Difference]: Start difference. First operand 657 states and 1011 transitions. Second operand 5 states. [2019-10-15 01:10:21,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:21,414 INFO L93 Difference]: Finished difference Result 674 states and 1031 transitions. [2019-10-15 01:10:21,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:21,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2019-10-15 01:10:21,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:21,420 INFO L225 Difference]: With dead ends: 674 [2019-10-15 01:10:21,421 INFO L226 Difference]: Without dead ends: 657 [2019-10-15 01:10:21,421 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 329 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:10:21,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-15 01:10:21,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-15 01:10:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-15 01:10:21,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1009 transitions. [2019-10-15 01:10:21,448 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1009 transitions. Word has length 161 [2019-10-15 01:10:21,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:21,448 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1009 transitions. [2019-10-15 01:10:21,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:21,448 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1009 transitions. [2019-10-15 01:10:21,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:10:21,453 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:21,454 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:21,661 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:21,661 INFO L410 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:21,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:21,662 INFO L82 PathProgramCache]: Analyzing trace with hash 215291242, now seen corresponding path program 1 times [2019-10-15 01:10:21,663 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:21,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117727471] [2019-10-15 01:10:21,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:21,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:21,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:10:21,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117727471] [2019-10-15 01:10:21,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926737438] [2019-10-15 01:10:21,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:22,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 2845 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-15 01:10:22,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:10:22,831 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:10:23,367 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:23,368 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [11] total 18 [2019-10-15 01:10:23,368 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615355655] [2019-10-15 01:10:23,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:10:23,368 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:23,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:10:23,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:10:23,369 INFO L87 Difference]: Start difference. First operand 657 states and 1009 transitions. Second operand 9 states. [2019-10-15 01:10:28,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:28,743 INFO L93 Difference]: Finished difference Result 1924 states and 3037 transitions. [2019-10-15 01:10:28,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 01:10:28,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 179 [2019-10-15 01:10:28,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:28,752 INFO L225 Difference]: With dead ends: 1924 [2019-10-15 01:10:28,752 INFO L226 Difference]: Without dead ends: 1333 [2019-10-15 01:10:28,756 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:10:28,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2019-10-15 01:10:28,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1290. [2019-10-15 01:10:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1290 states. [2019-10-15 01:10:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 2025 transitions. [2019-10-15 01:10:28,818 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 2025 transitions. Word has length 179 [2019-10-15 01:10:28,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:28,818 INFO L462 AbstractCegarLoop]: Abstraction has 1290 states and 2025 transitions. [2019-10-15 01:10:28,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:10:28,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 2025 transitions. [2019-10-15 01:10:28,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-15 01:10:28,824 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:28,825 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:10:29,033 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:29,034 INFO L410 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:29,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:29,034 INFO L82 PathProgramCache]: Analyzing trace with hash -208374248, now seen corresponding path program 1 times [2019-10-15 01:10:29,035 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:29,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370654559] [2019-10-15 01:10:29,036 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:29,036 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:29,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:10:29,224 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370654559] [2019-10-15 01:10:29,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831166061] [2019-10-15 01:10:29,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:29,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:10:29,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 01:10:29,889 INFO L321 TraceCheckSpWp]: Computing backward predicates...