/usr/bin/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_spec9_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:45:08,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:45:08,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:45:08,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:45:08,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:45:08,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:45:08,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:45:08,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:45:08,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:45:08,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:45:08,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:45:08,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:45:08,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:45:08,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:45:08,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:45:08,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:45:08,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:45:08,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:45:08,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:45:08,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:45:08,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:45:08,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:45:08,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:45:08,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:45:08,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:45:08,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:45:08,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:45:08,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:45:08,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:45:08,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:45:08,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:45:08,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:45:08,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:45:08,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:45:08,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:45:08,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:45:08,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:45:08,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:45:08,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:45:08,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:45:08,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:45:08,410 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 [2019-11-07 00:45:08,436 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:45:08,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:45:08,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:45:08,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:45:08,439 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:45:08,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:45:08,439 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:45:08,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:45:08,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:45:08,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:45:08,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:45:08,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:45:08,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:45:08,444 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:45:08,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:45:08,444 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:45:08,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:45:08,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:45:08,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:45:08,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:45:08,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:45:08,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:45:08,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:45:08,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:45:08,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:45:08,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:45:08,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:45:08,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:45:08,447 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 [2019-11-07 00:45:08,731 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:45:08,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:45:08,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:45:08,757 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:45:08,757 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:45:08,758 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product30.cil.c [2019-11-07 00:45:08,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b9b62b1a/905713479be54cbcb2c5f1ef75e39ebc/FLAG5a8a3adbe [2019-11-07 00:45:09,449 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:45:09,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product30.cil.c [2019-11-07 00:45:09,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b9b62b1a/905713479be54cbcb2c5f1ef75e39ebc/FLAG5a8a3adbe [2019-11-07 00:45:09,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b9b62b1a/905713479be54cbcb2c5f1ef75e39ebc [2019-11-07 00:45:09,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:45:09,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:45:09,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:45:09,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:45:09,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:45:09,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:45:09" (1/1) ... [2019-11-07 00:45:09,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2406b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:09, skipping insertion in model container [2019-11-07 00:45:09,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:45:09" (1/1) ... [2019-11-07 00:45:09,693 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:45:09,771 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:45:10,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:45:10,587 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:45:10,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:45:10,832 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:45:10,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10 WrapperNode [2019-11-07 00:45:10,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:45:10,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:45:10,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:45:10,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:45:10,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2019-11-07 00:45:10,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2019-11-07 00:45:10,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2019-11-07 00:45:10,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2019-11-07 00:45:10,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2019-11-07 00:45:10,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2019-11-07 00:45:11,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2019-11-07 00:45:11,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:45:11,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:45:11,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:45:11,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:45:11,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (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 [2019-11-07 00:45:11,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:45:11,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:45:11,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:45:11,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:45:11,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:45:11,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:45:11,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:45:11,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:45:11,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:45:11,119 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:45:11,119 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:45:11,120 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:45:11,120 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:45:11,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:45:11,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-11-07 00:45:11,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-11-07 00:45:11,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-11-07 00:45:11,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-11-07 00:45:11,121 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:45:11,121 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:45:11,122 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:45:11,122 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:45:11,122 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:45:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:45:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:45:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:45:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:45:11,123 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 00:45:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:45:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 00:45:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 00:45:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:45:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:45:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:45:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:45:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:45:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:45:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:45:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:45:11,126 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:45:11,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:45:11,126 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 00:45:11,126 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:45:11,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:45:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:45:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 00:45:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:45:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:45:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:45:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-11-07 00:45:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:45:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-11-07 00:45:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:45:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:45:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:45:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:45:11,129 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:45:11,129 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:45:11,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:45:11,129 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:45:11,129 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:45:11,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:45:11,130 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:45:11,130 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:45:11,130 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:45:11,130 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:45:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:45:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:45:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:45:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:45:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:45:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:45:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:45:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:45:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:45:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:45:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:45:11,133 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:45:11,133 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:45:11,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:45:11,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:45:11,134 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:45:11,135 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:45:11,135 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:45:11,135 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:45:11,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:45:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:45:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:45:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:45:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:45:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:45:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:45:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:45:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:45:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:45:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:45:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:45:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:45:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:45:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:45:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:45:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:45:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:45:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:45:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:45:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:45:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-11-07 00:45:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-11-07 00:45:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-11-07 00:45:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-11-07 00:45:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:45:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:45:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:45:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:45:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:45:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:45:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:45:11,143 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:45:11,143 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:45:11,144 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:45:11,144 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:45:11,144 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:45:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:45:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:45:11,146 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:45:11,146 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:45:11,146 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:45:11,146 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:45:11,146 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:45:11,146 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:45:11,147 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:45:11,147 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:45:11,147 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:45:11,148 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:45:11,148 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:45:11,148 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 00:45:11,149 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 00:45:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 00:45:11,153 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:45:11,153 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:45:11,153 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:45:11,154 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:45:11,154 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:45:11,154 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 00:45:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:45:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:45:11,161 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 00:45:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:45:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:45:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:45:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-11-07 00:45:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-11-07 00:45:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:45:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:45:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:45:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:45:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:45:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:45:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:45:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:45:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:45:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:45:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:45:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:45:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:45:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:45:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:45:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:45:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:45:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:45:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:45:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:45:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:45:13,696 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:45:13,696 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:45:13,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:45:13 BoogieIcfgContainer [2019-11-07 00:45:13,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:45:13,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:45:13,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:45:13,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:45:13,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:45:09" (1/3) ... [2019-11-07 00:45:13,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12841db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:45:13, skipping insertion in model container [2019-11-07 00:45:13,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (2/3) ... [2019-11-07 00:45:13,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12841db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:45:13, skipping insertion in model container [2019-11-07 00:45:13,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:45:13" (3/3) ... [2019-11-07 00:45:13,709 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product30.cil.c [2019-11-07 00:45:13,720 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:45:13,729 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:45:13,743 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:45:13,790 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:45:13,790 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:45:13,790 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:45:13,790 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:45:13,791 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:45:13,791 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:45:13,791 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:45:13,791 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:45:13,834 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states. [2019-11-07 00:45:13,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-11-07 00:45:13,860 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:13,861 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:13,863 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:13,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:13,870 INFO L82 PathProgramCache]: Analyzing trace with hash 236945449, now seen corresponding path program 1 times [2019-11-07 00:45:13,881 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:13,881 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190144576] [2019-11-07 00:45:13,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:14,511 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190144576] [2019-11-07 00:45:14,512 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:14,513 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:14,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500443636] [2019-11-07 00:45:14,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:14,520 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:14,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:14,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:14,537 INFO L87 Difference]: Start difference. First operand 796 states. Second operand 4 states. [2019-11-07 00:45:14,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:14,768 INFO L93 Difference]: Finished difference Result 1241 states and 1999 transitions. [2019-11-07 00:45:14,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:45:14,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2019-11-07 00:45:14,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:14,805 INFO L225 Difference]: With dead ends: 1241 [2019-11-07 00:45:14,805 INFO L226 Difference]: Without dead ends: 629 [2019-11-07 00:45:14,819 INFO L630 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 [2019-11-07 00:45:14,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-11-07 00:45:14,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-11-07 00:45:14,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-11-07 00:45:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1001 transitions. [2019-11-07 00:45:14,938 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1001 transitions. Word has length 87 [2019-11-07 00:45:14,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:14,939 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1001 transitions. [2019-11-07 00:45:14,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:14,939 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1001 transitions. [2019-11-07 00:45:14,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-07 00:45:14,946 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:14,946 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:14,946 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:14,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:14,947 INFO L82 PathProgramCache]: Analyzing trace with hash -217065445, now seen corresponding path program 1 times [2019-11-07 00:45:14,947 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:14,947 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94062245] [2019-11-07 00:45:14,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:15,230 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94062245] [2019-11-07 00:45:15,231 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:15,231 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:15,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898009852] [2019-11-07 00:45:15,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:15,240 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:15,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:15,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:15,246 INFO L87 Difference]: Start difference. First operand 629 states and 1001 transitions. Second operand 4 states. [2019-11-07 00:45:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:15,325 INFO L93 Difference]: Finished difference Result 1221 states and 1960 transitions. [2019-11-07 00:45:15,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:45:15,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-11-07 00:45:15,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:15,331 INFO L225 Difference]: With dead ends: 1221 [2019-11-07 00:45:15,332 INFO L226 Difference]: Without dead ends: 629 [2019-11-07 00:45:15,335 INFO L630 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 [2019-11-07 00:45:15,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-11-07 00:45:15,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-11-07 00:45:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-11-07 00:45:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1000 transitions. [2019-11-07 00:45:15,426 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1000 transitions. Word has length 90 [2019-11-07 00:45:15,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:15,427 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1000 transitions. [2019-11-07 00:45:15,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:15,427 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1000 transitions. [2019-11-07 00:45:15,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-07 00:45:15,435 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:15,437 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:15,438 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:15,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:15,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1176241356, now seen corresponding path program 1 times [2019-11-07 00:45:15,438 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:15,438 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953342614] [2019-11-07 00:45:15,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:15,574 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953342614] [2019-11-07 00:45:15,574 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:15,574 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:15,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651663617] [2019-11-07 00:45:15,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:15,575 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:15,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:15,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:15,576 INFO L87 Difference]: Start difference. First operand 629 states and 1000 transitions. Second operand 4 states. [2019-11-07 00:45:15,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:15,674 INFO L93 Difference]: Finished difference Result 1221 states and 1959 transitions. [2019-11-07 00:45:15,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:45:15,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-11-07 00:45:15,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:15,679 INFO L225 Difference]: With dead ends: 1221 [2019-11-07 00:45:15,680 INFO L226 Difference]: Without dead ends: 629 [2019-11-07 00:45:15,682 INFO L630 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 [2019-11-07 00:45:15,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-11-07 00:45:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-11-07 00:45:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-11-07 00:45:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 999 transitions. [2019-11-07 00:45:15,713 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 999 transitions. Word has length 91 [2019-11-07 00:45:15,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:15,713 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 999 transitions. [2019-11-07 00:45:15,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:15,713 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 999 transitions. [2019-11-07 00:45:15,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 00:45:15,715 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:15,715 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:15,716 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:15,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:15,716 INFO L82 PathProgramCache]: Analyzing trace with hash 21534647, now seen corresponding path program 1 times [2019-11-07 00:45:15,716 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:15,716 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050186947] [2019-11-07 00:45:15,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:15,827 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050186947] [2019-11-07 00:45:15,827 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:15,827 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:15,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314579669] [2019-11-07 00:45:15,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:15,828 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:15,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:15,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:15,829 INFO L87 Difference]: Start difference. First operand 629 states and 999 transitions. Second operand 4 states. [2019-11-07 00:45:15,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:15,886 INFO L93 Difference]: Finished difference Result 1221 states and 1958 transitions. [2019-11-07 00:45:15,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:45:15,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-11-07 00:45:15,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:15,892 INFO L225 Difference]: With dead ends: 1221 [2019-11-07 00:45:15,892 INFO L226 Difference]: Without dead ends: 629 [2019-11-07 00:45:15,895 INFO L630 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 [2019-11-07 00:45:15,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-11-07 00:45:15,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-11-07 00:45:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-11-07 00:45:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 998 transitions. [2019-11-07 00:45:15,922 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 998 transitions. Word has length 92 [2019-11-07 00:45:15,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:15,922 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 998 transitions. [2019-11-07 00:45:15,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 998 transitions. [2019-11-07 00:45:15,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-07 00:45:15,924 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:15,925 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:15,925 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:15,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:15,925 INFO L82 PathProgramCache]: Analyzing trace with hash -634656752, now seen corresponding path program 1 times [2019-11-07 00:45:15,926 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:15,926 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658660114] [2019-11-07 00:45:15,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:16,099 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658660114] [2019-11-07 00:45:16,099 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:16,099 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:16,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299029020] [2019-11-07 00:45:16,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:16,100 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:16,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:16,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:16,101 INFO L87 Difference]: Start difference. First operand 629 states and 998 transitions. Second operand 4 states. [2019-11-07 00:45:16,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:16,187 INFO L93 Difference]: Finished difference Result 1221 states and 1957 transitions. [2019-11-07 00:45:16,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:45:16,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-11-07 00:45:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:16,201 INFO L225 Difference]: With dead ends: 1221 [2019-11-07 00:45:16,202 INFO L226 Difference]: Without dead ends: 629 [2019-11-07 00:45:16,206 INFO L630 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 [2019-11-07 00:45:16,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-11-07 00:45:16,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-11-07 00:45:16,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-11-07 00:45:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 997 transitions. [2019-11-07 00:45:16,248 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 997 transitions. Word has length 93 [2019-11-07 00:45:16,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:16,248 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 997 transitions. [2019-11-07 00:45:16,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:16,248 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 997 transitions. [2019-11-07 00:45:16,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-07 00:45:16,251 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:16,253 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:16,253 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:16,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:16,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1365704531, now seen corresponding path program 1 times [2019-11-07 00:45:16,254 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:16,254 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163565712] [2019-11-07 00:45:16,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:16,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:16,463 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163565712] [2019-11-07 00:45:16,464 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:16,464 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:45:16,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204408313] [2019-11-07 00:45:16,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:45:16,466 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:16,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:45:16,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:45:16,468 INFO L87 Difference]: Start difference. First operand 629 states and 997 transitions. Second operand 10 states. [2019-11-07 00:45:16,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:16,641 INFO L93 Difference]: Finished difference Result 1179 states and 1877 transitions. [2019-11-07 00:45:16,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:45:16,642 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2019-11-07 00:45:16,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:16,651 INFO L225 Difference]: With dead ends: 1179 [2019-11-07 00:45:16,651 INFO L226 Difference]: Without dead ends: 638 [2019-11-07 00:45:16,658 INFO L630 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 [2019-11-07 00:45:16,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2019-11-07 00:45:16,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 636. [2019-11-07 00:45:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-11-07 00:45:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1006 transitions. [2019-11-07 00:45:16,697 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1006 transitions. Word has length 94 [2019-11-07 00:45:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:16,699 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 1006 transitions. [2019-11-07 00:45:16,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:45:16,699 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1006 transitions. [2019-11-07 00:45:16,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-07 00:45:16,702 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:16,702 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:16,703 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:16,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:16,703 INFO L82 PathProgramCache]: Analyzing trace with hash -564914574, now seen corresponding path program 1 times [2019-11-07 00:45:16,703 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:16,703 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884933909] [2019-11-07 00:45:16,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:16,816 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884933909] [2019-11-07 00:45:16,816 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:16,817 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:45:16,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737352234] [2019-11-07 00:45:16,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:45:16,817 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:16,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:45:16,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:45:16,818 INFO L87 Difference]: Start difference. First operand 636 states and 1006 transitions. Second operand 4 states. [2019-11-07 00:45:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:16,884 INFO L93 Difference]: Finished difference Result 1227 states and 1963 transitions. [2019-11-07 00:45:16,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:45:16,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-11-07 00:45:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:16,942 INFO L225 Difference]: With dead ends: 1227 [2019-11-07 00:45:16,942 INFO L226 Difference]: Without dead ends: 623 [2019-11-07 00:45:16,945 INFO L630 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 [2019-11-07 00:45:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-07 00:45:16,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-11-07 00:45:16,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-07 00:45:16,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 983 transitions. [2019-11-07 00:45:16,970 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 983 transitions. Word has length 94 [2019-11-07 00:45:16,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:16,970 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 983 transitions. [2019-11-07 00:45:16,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:45:16,971 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 983 transitions. [2019-11-07 00:45:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 00:45:16,974 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:16,974 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:16,974 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:16,975 INFO L82 PathProgramCache]: Analyzing trace with hash -811237728, now seen corresponding path program 1 times [2019-11-07 00:45:16,975 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:16,975 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909561325] [2019-11-07 00:45:16,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:17,188 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909561325] [2019-11-07 00:45:17,188 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:17,188 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:17,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751794938] [2019-11-07 00:45:17,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:17,190 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:17,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:17,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:17,191 INFO L87 Difference]: Start difference. First operand 623 states and 983 transitions. Second operand 6 states. [2019-11-07 00:45:17,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:17,457 INFO L93 Difference]: Finished difference Result 1167 states and 1855 transitions. [2019-11-07 00:45:17,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:17,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-11-07 00:45:17,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:17,463 INFO L225 Difference]: With dead ends: 1167 [2019-11-07 00:45:17,463 INFO L226 Difference]: Without dead ends: 623 [2019-11-07 00:45:17,467 INFO L630 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 [2019-11-07 00:45:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-07 00:45:17,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-11-07 00:45:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-07 00:45:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 979 transitions. [2019-11-07 00:45:17,493 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 979 transitions. Word has length 95 [2019-11-07 00:45:17,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:17,493 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 979 transitions. [2019-11-07 00:45:17,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 979 transitions. [2019-11-07 00:45:17,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 00:45:17,495 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:17,495 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:17,495 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:17,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:17,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1457329514, now seen corresponding path program 1 times [2019-11-07 00:45:17,496 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:17,496 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105258910] [2019-11-07 00:45:17,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:17,632 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105258910] [2019-11-07 00:45:17,633 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:17,634 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:17,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645896116] [2019-11-07 00:45:17,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:17,635 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:17,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:17,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:17,636 INFO L87 Difference]: Start difference. First operand 623 states and 979 transitions. Second operand 6 states. [2019-11-07 00:45:17,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:17,845 INFO L93 Difference]: Finished difference Result 1167 states and 1851 transitions. [2019-11-07 00:45:17,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:17,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-11-07 00:45:17,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:17,851 INFO L225 Difference]: With dead ends: 1167 [2019-11-07 00:45:17,851 INFO L226 Difference]: Without dead ends: 623 [2019-11-07 00:45:17,854 INFO L630 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 [2019-11-07 00:45:17,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-07 00:45:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-11-07 00:45:17,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-07 00:45:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 975 transitions. [2019-11-07 00:45:17,878 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 975 transitions. Word has length 96 [2019-11-07 00:45:17,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:17,879 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 975 transitions. [2019-11-07 00:45:17,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:17,879 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 975 transitions. [2019-11-07 00:45:17,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 00:45:17,882 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:17,882 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:17,882 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:17,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:17,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1359647269, now seen corresponding path program 1 times [2019-11-07 00:45:17,883 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:17,883 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770624803] [2019-11-07 00:45:17,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:18,039 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770624803] [2019-11-07 00:45:18,040 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:18,040 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:18,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442170724] [2019-11-07 00:45:18,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:18,041 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:18,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:18,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:18,042 INFO L87 Difference]: Start difference. First operand 623 states and 975 transitions. Second operand 6 states. [2019-11-07 00:45:18,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:18,238 INFO L93 Difference]: Finished difference Result 1167 states and 1847 transitions. [2019-11-07 00:45:18,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:18,239 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-11-07 00:45:18,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:18,244 INFO L225 Difference]: With dead ends: 1167 [2019-11-07 00:45:18,244 INFO L226 Difference]: Without dead ends: 623 [2019-11-07 00:45:18,251 INFO L630 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 [2019-11-07 00:45:18,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-07 00:45:18,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-11-07 00:45:18,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-07 00:45:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 971 transitions. [2019-11-07 00:45:18,274 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 971 transitions. Word has length 97 [2019-11-07 00:45:18,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:18,274 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 971 transitions. [2019-11-07 00:45:18,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:18,275 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 971 transitions. [2019-11-07 00:45:18,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 00:45:18,276 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:18,277 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:18,277 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:18,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:18,277 INFO L82 PathProgramCache]: Analyzing trace with hash -969773403, now seen corresponding path program 1 times [2019-11-07 00:45:18,277 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:18,278 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151439901] [2019-11-07 00:45:18,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:18,406 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151439901] [2019-11-07 00:45:18,406 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:18,406 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:45:18,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435939177] [2019-11-07 00:45:18,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:45:18,407 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:18,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:45:18,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:45:18,408 INFO L87 Difference]: Start difference. First operand 623 states and 971 transitions. Second operand 7 states. [2019-11-07 00:45:18,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:18,490 INFO L93 Difference]: Finished difference Result 1167 states and 1843 transitions. [2019-11-07 00:45:18,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:45:18,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-11-07 00:45:18,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:18,496 INFO L225 Difference]: With dead ends: 1167 [2019-11-07 00:45:18,496 INFO L226 Difference]: Without dead ends: 602 [2019-11-07 00:45:18,499 INFO L630 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 [2019-11-07 00:45:18,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-11-07 00:45:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-11-07 00:45:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-11-07 00:45:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 937 transitions. [2019-11-07 00:45:18,520 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 937 transitions. Word has length 97 [2019-11-07 00:45:18,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:18,521 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 937 transitions. [2019-11-07 00:45:18,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:45:18,521 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 937 transitions. [2019-11-07 00:45:18,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-07 00:45:18,522 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:18,523 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:18,523 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:18,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:18,523 INFO L82 PathProgramCache]: Analyzing trace with hash -137400005, now seen corresponding path program 1 times [2019-11-07 00:45:18,524 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:18,524 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738258867] [2019-11-07 00:45:18,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:18,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:18,633 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738258867] [2019-11-07 00:45:18,633 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:18,634 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:18,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992376617] [2019-11-07 00:45:18,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:18,634 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:18,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:18,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:18,635 INFO L87 Difference]: Start difference. First operand 602 states and 937 transitions. Second operand 6 states. [2019-11-07 00:45:18,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:18,765 INFO L93 Difference]: Finished difference Result 1146 states and 1809 transitions. [2019-11-07 00:45:18,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:18,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-11-07 00:45:18,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:18,770 INFO L225 Difference]: With dead ends: 1146 [2019-11-07 00:45:18,770 INFO L226 Difference]: Without dead ends: 602 [2019-11-07 00:45:18,774 INFO L630 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 [2019-11-07 00:45:18,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-11-07 00:45:18,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-11-07 00:45:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-11-07 00:45:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 936 transitions. [2019-11-07 00:45:18,795 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 936 transitions. Word has length 98 [2019-11-07 00:45:18,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:18,796 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 936 transitions. [2019-11-07 00:45:18,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:18,796 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 936 transitions. [2019-11-07 00:45:18,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-07 00:45:18,798 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:18,798 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:18,798 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:18,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:18,799 INFO L82 PathProgramCache]: Analyzing trace with hash 2069760426, now seen corresponding path program 1 times [2019-11-07 00:45:18,799 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:18,799 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339212406] [2019-11-07 00:45:18,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:18,920 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339212406] [2019-11-07 00:45:18,920 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:18,920 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:45:18,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041419246] [2019-11-07 00:45:18,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:45:18,921 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:18,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:45:18,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:45:18,922 INFO L87 Difference]: Start difference. First operand 602 states and 936 transitions. Second operand 6 states. [2019-11-07 00:45:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:19,037 INFO L93 Difference]: Finished difference Result 1146 states and 1808 transitions. [2019-11-07 00:45:19,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:19,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-11-07 00:45:19,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:19,042 INFO L225 Difference]: With dead ends: 1146 [2019-11-07 00:45:19,042 INFO L226 Difference]: Without dead ends: 602 [2019-11-07 00:45:19,045 INFO L630 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 [2019-11-07 00:45:19,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-11-07 00:45:19,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-11-07 00:45:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-11-07 00:45:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 935 transitions. [2019-11-07 00:45:19,068 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 935 transitions. Word has length 99 [2019-11-07 00:45:19,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:19,068 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 935 transitions. [2019-11-07 00:45:19,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:45:19,068 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 935 transitions. [2019-11-07 00:45:19,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-07 00:45:19,070 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:19,070 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:19,070 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:19,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:19,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1151724576, now seen corresponding path program 1 times [2019-11-07 00:45:19,071 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:19,071 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966345712] [2019-11-07 00:45:19,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:19,245 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966345712] [2019-11-07 00:45:19,245 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:19,245 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:45:19,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313426721] [2019-11-07 00:45:19,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:45:19,246 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:19,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:45:19,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:45:19,247 INFO L87 Difference]: Start difference. First operand 602 states and 935 transitions. Second operand 12 states. [2019-11-07 00:45:19,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:19,425 INFO L93 Difference]: Finished difference Result 1147 states and 1807 transitions. [2019-11-07 00:45:19,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:45:19,427 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2019-11-07 00:45:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:19,433 INFO L225 Difference]: With dead ends: 1147 [2019-11-07 00:45:19,434 INFO L226 Difference]: Without dead ends: 602 [2019-11-07 00:45:19,437 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:45:19,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-11-07 00:45:19,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-11-07 00:45:19,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-11-07 00:45:19,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 934 transitions. [2019-11-07 00:45:19,465 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 934 transitions. Word has length 100 [2019-11-07 00:45:19,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:19,466 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 934 transitions. [2019-11-07 00:45:19,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:45:19,466 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 934 transitions. [2019-11-07 00:45:19,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-11-07 00:45:19,468 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:19,469 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:19,469 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:19,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:19,469 INFO L82 PathProgramCache]: Analyzing trace with hash 196339579, now seen corresponding path program 1 times [2019-11-07 00:45:19,469 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:19,470 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171094427] [2019-11-07 00:45:19,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:19,655 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171094427] [2019-11-07 00:45:19,655 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:19,655 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:45:19,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047372911] [2019-11-07 00:45:19,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:45:19,657 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:19,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:45:19,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:45:19,658 INFO L87 Difference]: Start difference. First operand 602 states and 934 transitions. Second operand 10 states. [2019-11-07 00:45:26,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:26,460 INFO L93 Difference]: Finished difference Result 1776 states and 2866 transitions. [2019-11-07 00:45:26,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:45:26,461 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2019-11-07 00:45:26,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:26,477 INFO L225 Difference]: With dead ends: 1776 [2019-11-07 00:45:26,478 INFO L226 Difference]: Without dead ends: 1240 [2019-11-07 00:45:26,487 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:45:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2019-11-07 00:45:26,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1210. [2019-11-07 00:45:26,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2019-11-07 00:45:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1927 transitions. [2019-11-07 00:45:26,590 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1927 transitions. Word has length 101 [2019-11-07 00:45:26,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:26,590 INFO L462 AbstractCegarLoop]: Abstraction has 1210 states and 1927 transitions. [2019-11-07 00:45:26,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:45:26,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1927 transitions. [2019-11-07 00:45:26,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-07 00:45:26,593 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:26,593 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:26,593 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:26,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:26,594 INFO L82 PathProgramCache]: Analyzing trace with hash 994116260, now seen corresponding path program 1 times [2019-11-07 00:45:26,594 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:26,594 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77534210] [2019-11-07 00:45:26,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:26,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:26,887 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77534210] [2019-11-07 00:45:26,890 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:26,891 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:45:26,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879926854] [2019-11-07 00:45:26,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:45:26,893 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:26,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:45:26,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:45:26,894 INFO L87 Difference]: Start difference. First operand 1210 states and 1927 transitions. Second operand 10 states. [2019-11-07 00:45:34,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:34,092 INFO L93 Difference]: Finished difference Result 3773 states and 6220 transitions. [2019-11-07 00:45:34,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:45:34,093 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2019-11-07 00:45:34,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:34,110 INFO L225 Difference]: With dead ends: 3773 [2019-11-07 00:45:34,110 INFO L226 Difference]: Without dead ends: 2629 [2019-11-07 00:45:34,118 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:45:34,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2019-11-07 00:45:34,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2588. [2019-11-07 00:45:34,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2588 states. [2019-11-07 00:45:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 4209 transitions. [2019-11-07 00:45:34,244 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 4209 transitions. Word has length 102 [2019-11-07 00:45:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:34,244 INFO L462 AbstractCegarLoop]: Abstraction has 2588 states and 4209 transitions. [2019-11-07 00:45:34,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:45:34,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 4209 transitions. [2019-11-07 00:45:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-07 00:45:34,247 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:34,247 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:34,248 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:34,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:34,248 INFO L82 PathProgramCache]: Analyzing trace with hash 800793247, now seen corresponding path program 1 times [2019-11-07 00:45:34,248 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:34,249 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464180161] [2019-11-07 00:45:34,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:34,416 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464180161] [2019-11-07 00:45:34,416 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:34,416 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:45:34,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415411857] [2019-11-07 00:45:34,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:45:34,417 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:34,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:45:34,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:45:34,418 INFO L87 Difference]: Start difference. First operand 2588 states and 4209 transitions. Second operand 10 states. [2019-11-07 00:45:40,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:40,573 INFO L93 Difference]: Finished difference Result 8393 states and 14151 transitions. [2019-11-07 00:45:40,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:45:40,574 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2019-11-07 00:45:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:40,620 INFO L225 Difference]: With dead ends: 8393 [2019-11-07 00:45:40,621 INFO L226 Difference]: Without dead ends: 5871 [2019-11-07 00:45:40,644 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:45:40,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5871 states. [2019-11-07 00:45:40,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5871 to 5808. [2019-11-07 00:45:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5808 states. [2019-11-07 00:45:41,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 9647 transitions. [2019-11-07 00:45:41,029 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 9647 transitions. Word has length 103 [2019-11-07 00:45:41,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:41,029 INFO L462 AbstractCegarLoop]: Abstraction has 5808 states and 9647 transitions. [2019-11-07 00:45:41,030 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:45:41,030 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 9647 transitions. [2019-11-07 00:45:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-07 00:45:41,031 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:41,032 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:41,032 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:41,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:41,033 INFO L82 PathProgramCache]: Analyzing trace with hash -51849208, now seen corresponding path program 1 times [2019-11-07 00:45:41,033 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:41,033 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12315946] [2019-11-07 00:45:41,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:41,179 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12315946] [2019-11-07 00:45:41,179 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:41,179 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:45:41,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045560056] [2019-11-07 00:45:41,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:45:41,180 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:41,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:45:41,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:45:41,181 INFO L87 Difference]: Start difference. First operand 5808 states and 9647 transitions. Second operand 10 states.