/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_spec3_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:44:14,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:44:14,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:44:14,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:44:14,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:44:14,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:44:14,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:44:14,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:44:14,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:44:14,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:44:14,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:44:14,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:44:14,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:44:14,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:44:14,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:44:14,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:44:14,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:44:14,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:44:14,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:44:14,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:44:14,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:44:14,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:44:14,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:44:14,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:44:14,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:44:14,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:44:14,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:44:14,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:44:14,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:44:14,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:44:14,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:44:14,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:44:14,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:44:14,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:44:14,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:44:14,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:44:14,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:44:14,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:44:14,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:44:14,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:44:14,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:44:14,456 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 00:44:14,470 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:44:14,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:44:14,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:44:14,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:44:14,476 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:44:14,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:44:14,477 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:44:14,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:44:14,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:44:14,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:44:14,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:44:14,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:44:14,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:44:14,478 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:44:14,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:44:14,478 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:44:14,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:44:14,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:44:14,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:44:14,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:44:14,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:44:14,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:44:14,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:44:14,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:44:14,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:44:14,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:44:14,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:44:14,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:44:14,481 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 00:44:14,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:44:14,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:44:14,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:44:14,813 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:44:14,813 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:44:14,814 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c [2019-11-07 00:44:14,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da52861dc/c9a957e38775468cb3447165e6a2ce2c/FLAG881f58bc2 [2019-11-07 00:44:15,630 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:44:15,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c [2019-11-07 00:44:15,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da52861dc/c9a957e38775468cb3447165e6a2ce2c/FLAG881f58bc2 [2019-11-07 00:44:15,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da52861dc/c9a957e38775468cb3447165e6a2ce2c [2019-11-07 00:44:15,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:44:15,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:44:15,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:44:15,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:44:15,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:44:15,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:15" (1/1) ... [2019-11-07 00:44:15,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70263d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:15, skipping insertion in model container [2019-11-07 00:44:15,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:15" (1/1) ... [2019-11-07 00:44:15,773 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:44:15,866 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:44:16,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:44:16,636 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:44:16,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:44:16,871 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:44:16,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:16 WrapperNode [2019-11-07 00:44:16,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:44:16,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:44:16,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:44:16,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:44:16,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:16" (1/1) ... [2019-11-07 00:44:16,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:16" (1/1) ... [2019-11-07 00:44:16,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:16" (1/1) ... [2019-11-07 00:44:16,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:16" (1/1) ... [2019-11-07 00:44:17,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:16" (1/1) ... [2019-11-07 00:44:17,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:16" (1/1) ... [2019-11-07 00:44:17,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:16" (1/1) ... [2019-11-07 00:44:17,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:44:17,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:44:17,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:44:17,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:44:17,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:16" (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 00:44:17,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:44:17,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:44:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:44:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 00:44:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 00:44:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:44:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:44:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:44:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 00:44:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:44:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 00:44:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 00:44:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:44:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:44:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:44:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:44:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:44:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:44:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:44:17,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:44:17,163 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:44:17,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:44:17,164 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 00:44:17,164 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:44:17,164 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:44:17,164 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:44:17,164 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 00:44:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:44:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:44:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:44:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-11-07 00:44:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:44:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-11-07 00:44:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:44:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:44:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 00:44:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 00:44:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:44:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:44:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:44:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:44:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:44:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:44:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:44:17,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:44:17,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:44:17,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:44:17,168 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:44:17,168 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:44:17,168 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:44:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:44:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:44:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:44:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:44:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:44:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:44:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:44:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:44:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:44:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:44:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:44:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:44:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:44:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:44:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:44:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:44:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:44:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:44:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:44:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:44:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:44:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:44:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:44:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:44:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:44:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:44:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:44:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:44:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:44:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:44:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:44:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:44:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:44:17,175 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:44:17,175 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:44:17,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 00:44:17,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 00:44:17,175 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:44:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:44:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:44:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:44:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:44:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:44:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:44:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:44:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:44:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:44:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:44:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:44:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:44:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:44:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:44:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:44:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:44:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:44:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:44:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 00:44:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 00:44:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 00:44:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 00:44:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 00:44:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:44:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:44:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:44:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:44:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 00:44:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:44:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:44:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 00:44:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:44:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:44:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:44:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-11-07 00:44:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-11-07 00:44:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:44:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:44:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:44:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:44:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:44:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:44:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:44:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:44:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:44:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:44:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:44:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:44:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:44:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:44:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:44:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:44:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:44:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:44:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:44:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:44:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:44:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:44:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:44:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:44:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:44:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:44:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:44:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:44:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:44:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:44:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:44:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:44:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:44:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:44:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:44:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:44:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:44:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:44:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:44:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:44:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:44:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:44:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:44:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:44:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:44:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:44:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:44:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:44:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:44:19,707 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:44:19,708 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:44:19,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:19 BoogieIcfgContainer [2019-11-07 00:44:19,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:44:19,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:44:19,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:44:19,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:44:19,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:44:15" (1/3) ... [2019-11-07 00:44:19,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c376c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:19, skipping insertion in model container [2019-11-07 00:44:19,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:16" (2/3) ... [2019-11-07 00:44:19,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c376c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:19, skipping insertion in model container [2019-11-07 00:44:19,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:19" (3/3) ... [2019-11-07 00:44:19,718 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2019-11-07 00:44:19,728 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:44:19,737 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:44:19,748 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:44:19,779 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:44:19,779 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:44:19,780 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:44:19,780 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:44:19,780 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:44:19,780 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:44:19,780 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:44:19,780 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:44:19,816 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states. [2019-11-07 00:44:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-07 00:44:19,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:19,830 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:19,832 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:19,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:19,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1927707397, now seen corresponding path program 1 times [2019-11-07 00:44:19,849 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:19,849 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922777009] [2019-11-07 00:44:19,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:20,509 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922777009] [2019-11-07 00:44:20,510 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:20,510 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:20,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772134126] [2019-11-07 00:44:20,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:20,519 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:20,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:20,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:20,541 INFO L87 Difference]: Start difference. First operand 825 states. Second operand 7 states. [2019-11-07 00:44:20,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:20,830 INFO L93 Difference]: Finished difference Result 1315 states and 2110 transitions. [2019-11-07 00:44:20,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:44:20,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-11-07 00:44:20,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:20,867 INFO L225 Difference]: With dead ends: 1315 [2019-11-07 00:44:20,867 INFO L226 Difference]: Without dead ends: 666 [2019-11-07 00:44:20,880 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 00:44:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-11-07 00:44:21,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 664. [2019-11-07 00:44:21,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2019-11-07 00:44:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1050 transitions. [2019-11-07 00:44:21,042 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1050 transitions. Word has length 93 [2019-11-07 00:44:21,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:21,042 INFO L462 AbstractCegarLoop]: Abstraction has 664 states and 1050 transitions. [2019-11-07 00:44:21,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:21,043 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1050 transitions. [2019-11-07 00:44:21,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-07 00:44:21,058 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:21,059 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:21,059 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:21,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:21,060 INFO L82 PathProgramCache]: Analyzing trace with hash -385946519, now seen corresponding path program 1 times [2019-11-07 00:44:21,060 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:21,060 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71256569] [2019-11-07 00:44:21,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:21,290 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71256569] [2019-11-07 00:44:21,292 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:21,292 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:21,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393970479] [2019-11-07 00:44:21,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:21,294 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:21,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:21,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:21,295 INFO L87 Difference]: Start difference. First operand 664 states and 1050 transitions. Second operand 4 states. [2019-11-07 00:44:21,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:21,371 INFO L93 Difference]: Finished difference Result 1294 states and 2065 transitions. [2019-11-07 00:44:21,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:21,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-11-07 00:44:21,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:21,377 INFO L225 Difference]: With dead ends: 1294 [2019-11-07 00:44:21,377 INFO L226 Difference]: Without dead ends: 646 [2019-11-07 00:44:21,380 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 00:44:21,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2019-11-07 00:44:21,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2019-11-07 00:44:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2019-11-07 00:44:21,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1017 transitions. [2019-11-07 00:44:21,440 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1017 transitions. Word has length 94 [2019-11-07 00:44:21,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:21,442 INFO L462 AbstractCegarLoop]: Abstraction has 646 states and 1017 transitions. [2019-11-07 00:44:21,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:21,442 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1017 transitions. [2019-11-07 00:44:21,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-07 00:44:21,460 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:21,461 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:21,461 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:21,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:21,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1755116079, now seen corresponding path program 1 times [2019-11-07 00:44:21,464 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:21,465 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325961440] [2019-11-07 00:44:21,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:21,738 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325961440] [2019-11-07 00:44:21,738 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:21,738 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:21,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230067251] [2019-11-07 00:44:21,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:21,739 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:21,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:21,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:21,740 INFO L87 Difference]: Start difference. First operand 646 states and 1017 transitions. Second operand 7 states. [2019-11-07 00:44:21,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:21,837 INFO L93 Difference]: Finished difference Result 1263 states and 2007 transitions. [2019-11-07 00:44:21,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:44:21,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2019-11-07 00:44:21,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:21,843 INFO L225 Difference]: With dead ends: 1263 [2019-11-07 00:44:21,844 INFO L226 Difference]: Without dead ends: 640 [2019-11-07 00:44:21,847 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 00:44:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2019-11-07 00:44:21,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2019-11-07 00:44:21,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2019-11-07 00:44:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1004 transitions. [2019-11-07 00:44:21,873 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1004 transitions. Word has length 94 [2019-11-07 00:44:21,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:21,874 INFO L462 AbstractCegarLoop]: Abstraction has 640 states and 1004 transitions. [2019-11-07 00:44:21,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:21,874 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1004 transitions. [2019-11-07 00:44:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 00:44:21,877 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:21,878 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:21,878 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:21,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:21,878 INFO L82 PathProgramCache]: Analyzing trace with hash -2113338455, now seen corresponding path program 1 times [2019-11-07 00:44:21,879 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:21,879 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135759760] [2019-11-07 00:44:21,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:22,022 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135759760] [2019-11-07 00:44:22,023 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:22,023 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:22,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797967137] [2019-11-07 00:44:22,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:22,024 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:22,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:22,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:22,025 INFO L87 Difference]: Start difference. First operand 640 states and 1004 transitions. Second operand 7 states. [2019-11-07 00:44:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:22,120 INFO L93 Difference]: Finished difference Result 1251 states and 1981 transitions. [2019-11-07 00:44:22,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:44:22,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-11-07 00:44:22,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:22,131 INFO L225 Difference]: With dead ends: 1251 [2019-11-07 00:44:22,132 INFO L226 Difference]: Without dead ends: 634 [2019-11-07 00:44:22,140 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 00:44:22,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-11-07 00:44:22,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2019-11-07 00:44:22,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2019-11-07 00:44:22,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 991 transitions. [2019-11-07 00:44:22,167 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 991 transitions. Word has length 95 [2019-11-07 00:44:22,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:22,167 INFO L462 AbstractCegarLoop]: Abstraction has 634 states and 991 transitions. [2019-11-07 00:44:22,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:22,167 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 991 transitions. [2019-11-07 00:44:22,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 00:44:22,170 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:22,170 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:22,170 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:22,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:22,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1806825461, now seen corresponding path program 1 times [2019-11-07 00:44:22,171 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:22,172 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211282714] [2019-11-07 00:44:22,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:22,341 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211282714] [2019-11-07 00:44:22,342 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:22,342 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:22,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416103031] [2019-11-07 00:44:22,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:22,343 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:22,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:22,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:22,344 INFO L87 Difference]: Start difference. First operand 634 states and 991 transitions. Second operand 7 states. [2019-11-07 00:44:22,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:22,458 INFO L93 Difference]: Finished difference Result 1239 states and 1955 transitions. [2019-11-07 00:44:22,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:44:22,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-11-07 00:44:22,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:22,466 INFO L225 Difference]: With dead ends: 1239 [2019-11-07 00:44:22,466 INFO L226 Difference]: Without dead ends: 628 [2019-11-07 00:44:22,470 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 00:44:22,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-11-07 00:44:22,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-11-07 00:44:22,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-11-07 00:44:22,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 978 transitions. [2019-11-07 00:44:22,562 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 978 transitions. Word has length 96 [2019-11-07 00:44:22,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:22,563 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 978 transitions. [2019-11-07 00:44:22,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:22,563 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 978 transitions. [2019-11-07 00:44:22,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 00:44:22,565 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:22,565 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:22,565 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:22,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:22,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1099200010, now seen corresponding path program 1 times [2019-11-07 00:44:22,566 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:22,566 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143040427] [2019-11-07 00:44:22,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:22,699 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143040427] [2019-11-07 00:44:22,700 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:22,700 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:22,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344759702] [2019-11-07 00:44:22,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:22,702 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:22,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:22,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:22,705 INFO L87 Difference]: Start difference. First operand 628 states and 978 transitions. Second operand 7 states. [2019-11-07 00:44:22,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:22,788 INFO L93 Difference]: Finished difference Result 1227 states and 1929 transitions. [2019-11-07 00:44:22,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:44:22,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-11-07 00:44:22,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:22,800 INFO L225 Difference]: With dead ends: 1227 [2019-11-07 00:44:22,801 INFO L226 Difference]: Without dead ends: 628 [2019-11-07 00:44:22,806 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 00:44:22,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-11-07 00:44:22,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-11-07 00:44:22,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-11-07 00:44:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 977 transitions. [2019-11-07 00:44:22,829 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 977 transitions. Word has length 96 [2019-11-07 00:44:22,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:22,830 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 977 transitions. [2019-11-07 00:44:22,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 977 transitions. [2019-11-07 00:44:22,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 00:44:22,833 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:22,833 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:22,833 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:22,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:22,833 INFO L82 PathProgramCache]: Analyzing trace with hash 918010957, now seen corresponding path program 1 times [2019-11-07 00:44:22,834 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:22,834 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127884984] [2019-11-07 00:44:22,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:22,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:22,954 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127884984] [2019-11-07 00:44:22,954 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:22,954 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:44:22,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309603977] [2019-11-07 00:44:22,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:44:22,955 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:22,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:44:22,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:44:22,956 INFO L87 Difference]: Start difference. First operand 628 states and 977 transitions. Second operand 5 states. [2019-11-07 00:44:23,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:23,033 INFO L93 Difference]: Finished difference Result 1226 states and 1926 transitions. [2019-11-07 00:44:23,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:44:23,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-11-07 00:44:23,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:23,038 INFO L225 Difference]: With dead ends: 1226 [2019-11-07 00:44:23,038 INFO L226 Difference]: Without dead ends: 628 [2019-11-07 00:44:23,042 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:44:23,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-11-07 00:44:23,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-11-07 00:44:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-11-07 00:44:23,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 976 transitions. [2019-11-07 00:44:23,064 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 976 transitions. Word has length 97 [2019-11-07 00:44:23,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:23,064 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 976 transitions. [2019-11-07 00:44:23,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:44:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 976 transitions. [2019-11-07 00:44:23,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-07 00:44:23,066 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:23,066 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:23,066 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:23,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:23,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1933004815, now seen corresponding path program 1 times [2019-11-07 00:44:23,067 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:23,067 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9712761] [2019-11-07 00:44:23,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:23,184 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9712761] [2019-11-07 00:44:23,185 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:23,185 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:44:23,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393157736] [2019-11-07 00:44:23,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:44:23,186 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:23,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:44:23,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:44:23,187 INFO L87 Difference]: Start difference. First operand 628 states and 976 transitions. Second operand 5 states. [2019-11-07 00:44:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:23,262 INFO L93 Difference]: Finished difference Result 1226 states and 1924 transitions. [2019-11-07 00:44:23,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:44:23,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-11-07 00:44:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:23,268 INFO L225 Difference]: With dead ends: 1226 [2019-11-07 00:44:23,268 INFO L226 Difference]: Without dead ends: 628 [2019-11-07 00:44:23,272 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:44:23,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-11-07 00:44:23,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-11-07 00:44:23,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-11-07 00:44:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 975 transitions. [2019-11-07 00:44:23,354 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 975 transitions. Word has length 98 [2019-11-07 00:44:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:23,355 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 975 transitions. [2019-11-07 00:44:23,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:44:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 975 transitions. [2019-11-07 00:44:23,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-07 00:44:23,356 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:23,357 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:23,357 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:23,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:23,357 INFO L82 PathProgramCache]: Analyzing trace with hash 432757288, now seen corresponding path program 1 times [2019-11-07 00:44:23,358 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:23,358 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728577447] [2019-11-07 00:44:23,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:23,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:23,518 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728577447] [2019-11-07 00:44:23,519 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:23,519 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:44:23,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485152314] [2019-11-07 00:44:23,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:44:23,521 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:23,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:44:23,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:44:23,527 INFO L87 Difference]: Start difference. First operand 628 states and 975 transitions. Second operand 5 states. [2019-11-07 00:44:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:23,625 INFO L93 Difference]: Finished difference Result 1226 states and 1922 transitions. [2019-11-07 00:44:23,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:44:23,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-11-07 00:44:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:23,634 INFO L225 Difference]: With dead ends: 1226 [2019-11-07 00:44:23,634 INFO L226 Difference]: Without dead ends: 628 [2019-11-07 00:44:23,639 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:44:23,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-11-07 00:44:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-11-07 00:44:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-11-07 00:44:23,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 974 transitions. [2019-11-07 00:44:23,672 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 974 transitions. Word has length 99 [2019-11-07 00:44:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:23,674 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 974 transitions. [2019-11-07 00:44:23,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:44:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 974 transitions. [2019-11-07 00:44:23,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-07 00:44:23,677 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:23,677 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:23,678 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:23,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:23,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1309876268, now seen corresponding path program 1 times [2019-11-07 00:44:23,679 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:23,679 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334666780] [2019-11-07 00:44:23,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:23,855 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334666780] [2019-11-07 00:44:23,857 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:23,857 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:44:23,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540888113] [2019-11-07 00:44:23,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:44:23,861 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:23,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:44:23,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:44:23,862 INFO L87 Difference]: Start difference. First operand 628 states and 974 transitions. Second operand 5 states. [2019-11-07 00:44:23,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:23,937 INFO L93 Difference]: Finished difference Result 1226 states and 1920 transitions. [2019-11-07 00:44:23,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:44:23,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-11-07 00:44:23,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:23,943 INFO L225 Difference]: With dead ends: 1226 [2019-11-07 00:44:23,943 INFO L226 Difference]: Without dead ends: 628 [2019-11-07 00:44:23,950 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:44:23,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-11-07 00:44:23,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-11-07 00:44:23,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-11-07 00:44:23,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 973 transitions. [2019-11-07 00:44:23,976 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 973 transitions. Word has length 100 [2019-11-07 00:44:23,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:23,976 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 973 transitions. [2019-11-07 00:44:23,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:44:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 973 transitions. [2019-11-07 00:44:23,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-11-07 00:44:23,979 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:23,979 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:23,979 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:23,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:23,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1011268605, now seen corresponding path program 1 times [2019-11-07 00:44:23,980 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:23,980 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284777919] [2019-11-07 00:44:23,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:44:24,186 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284777919] [2019-11-07 00:44:24,186 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023693416] [2019-11-07 00:44:24,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:24,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:44:24,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:44:25,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:25,021 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:44:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:25,138 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:44:25,138 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 00:44:25,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647744642] [2019-11-07 00:44:25,139 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:44:25,139 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:25,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:44:25,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:44:25,140 INFO L87 Difference]: Start difference. First operand 628 states and 973 transitions. Second operand 3 states. [2019-11-07 00:44:25,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:25,232 INFO L93 Difference]: Finished difference Result 1763 states and 2779 transitions. [2019-11-07 00:44:25,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:44:25,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2019-11-07 00:44:25,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:25,242 INFO L225 Difference]: With dead ends: 1763 [2019-11-07 00:44:25,242 INFO L226 Difference]: Without dead ends: 1169 [2019-11-07 00:44:25,246 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:44:25,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-11-07 00:44:25,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1156. [2019-11-07 00:44:25,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2019-11-07 00:44:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1809 transitions. [2019-11-07 00:44:25,305 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1809 transitions. Word has length 101 [2019-11-07 00:44:25,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:25,305 INFO L462 AbstractCegarLoop]: Abstraction has 1156 states and 1809 transitions. [2019-11-07 00:44:25,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:44:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1809 transitions. [2019-11-07 00:44:25,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-07 00:44:25,307 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:25,307 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:25,515 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:25,516 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:25,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:25,517 INFO L82 PathProgramCache]: Analyzing trace with hash 522332344, now seen corresponding path program 1 times [2019-11-07 00:44:25,517 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:25,518 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041802222] [2019-11-07 00:44:25,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:25,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:25,714 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041802222] [2019-11-07 00:44:25,714 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:25,714 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:25,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100408301] [2019-11-07 00:44:25,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:25,716 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:25,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:25,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:25,717 INFO L87 Difference]: Start difference. First operand 1156 states and 1809 transitions. Second operand 7 states. [2019-11-07 00:44:28,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:28,615 INFO L93 Difference]: Finished difference Result 3402 states and 5472 transitions. [2019-11-07 00:44:28,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:44:28,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2019-11-07 00:44:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:28,636 INFO L225 Difference]: With dead ends: 3402 [2019-11-07 00:44:28,636 INFO L226 Difference]: Without dead ends: 2280 [2019-11-07 00:44:28,644 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:44:28,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2019-11-07 00:44:28,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 2214. [2019-11-07 00:44:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2214 states. [2019-11-07 00:44:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3549 transitions. [2019-11-07 00:44:28,777 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3549 transitions. Word has length 105 [2019-11-07 00:44:28,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:28,777 INFO L462 AbstractCegarLoop]: Abstraction has 2214 states and 3549 transitions. [2019-11-07 00:44:28,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3549 transitions. [2019-11-07 00:44:28,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-07 00:44:28,779 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:28,779 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:28,780 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:28,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:28,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2018828006, now seen corresponding path program 1 times [2019-11-07 00:44:28,780 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:28,780 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764009393] [2019-11-07 00:44:28,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:44:28,952 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764009393] [2019-11-07 00:44:28,952 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225886349] [2019-11-07 00:44:28,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:29,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:44:29,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:44:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:29,759 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:44:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:29,910 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:44:29,911 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 00:44:29,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955684212] [2019-11-07 00:44:29,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:44:29,913 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:29,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:44:29,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:44:29,915 INFO L87 Difference]: Start difference. First operand 2214 states and 3549 transitions. Second operand 3 states. [2019-11-07 00:44:30,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:30,069 INFO L93 Difference]: Finished difference Result 5462 states and 8838 transitions. [2019-11-07 00:44:30,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:44:30,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-11-07 00:44:30,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:30,095 INFO L225 Difference]: With dead ends: 5462 [2019-11-07 00:44:30,095 INFO L226 Difference]: Without dead ends: 3282 [2019-11-07 00:44:30,109 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:44:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2019-11-07 00:44:30,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 3182. [2019-11-07 00:44:30,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3182 states. [2019-11-07 00:44:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 5119 transitions. [2019-11-07 00:44:30,308 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 5119 transitions. Word has length 102 [2019-11-07 00:44:30,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:30,309 INFO L462 AbstractCegarLoop]: Abstraction has 3182 states and 5119 transitions. [2019-11-07 00:44:30,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:44:30,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 5119 transitions. [2019-11-07 00:44:30,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-07 00:44:30,311 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:30,311 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:30,518 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:30,518 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:30,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:30,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1548757580, now seen corresponding path program 1 times [2019-11-07 00:44:30,519 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:30,519 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367169631] [2019-11-07 00:44:30,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:44:30,746 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367169631] [2019-11-07 00:44:30,747 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467186407] [2019-11-07 00:44:30,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:31,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:44:31,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:44:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:31,415 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:44:31,553 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:44:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:31,722 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:44:31,723 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-11-07 00:44:31,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106373524] [2019-11-07 00:44:31,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:44:31,728 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:31,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:44:31,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:44:31,729 INFO L87 Difference]: Start difference. First operand 3182 states and 5119 transitions. Second operand 11 states. [2019-11-07 00:44:36,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:36,818 INFO L93 Difference]: Finished difference Result 14248 states and 23312 transitions. [2019-11-07 00:44:36,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 00:44:36,819 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2019-11-07 00:44:36,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:36,918 INFO L225 Difference]: With dead ends: 14248 [2019-11-07 00:44:36,918 INFO L226 Difference]: Without dead ends: 11100 [2019-11-07 00:44:36,943 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:44:36,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11100 states. [2019-11-07 00:44:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11100 to 10980. [2019-11-07 00:44:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10980 states. [2019-11-07 00:44:37,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10980 states to 10980 states and 17536 transitions. [2019-11-07 00:44:37,484 INFO L78 Accepts]: Start accepts. Automaton has 10980 states and 17536 transitions. Word has length 105 [2019-11-07 00:44:37,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:37,485 INFO L462 AbstractCegarLoop]: Abstraction has 10980 states and 17536 transitions. [2019-11-07 00:44:37,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:44:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 10980 states and 17536 transitions. [2019-11-07 00:44:37,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-07 00:44:37,486 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:37,486 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:37,693 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:37,693 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:37,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:37,694 INFO L82 PathProgramCache]: Analyzing trace with hash 30313455, now seen corresponding path program 1 times [2019-11-07 00:44:37,695 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:37,695 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876596329] [2019-11-07 00:44:37,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:37,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:37,855 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876596329] [2019-11-07 00:44:37,855 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:37,856 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:37,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407445055] [2019-11-07 00:44:37,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:37,856 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:37,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:37,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:37,857 INFO L87 Difference]: Start difference. First operand 10980 states and 17536 transitions. Second operand 4 states. [2019-11-07 00:44:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:38,286 INFO L93 Difference]: Finished difference Result 21944 states and 35353 transitions. [2019-11-07 00:44:38,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:44:38,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-11-07 00:44:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:39,004 INFO L225 Difference]: With dead ends: 21944 [2019-11-07 00:44:39,005 INFO L226 Difference]: Without dead ends: 10998 [2019-11-07 00:44:39,050 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 00:44:39,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10998 states. [2019-11-07 00:44:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10998 to 10962. [2019-11-07 00:44:39,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10962 states. [2019-11-07 00:44:39,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10962 states to 10962 states and 17435 transitions. [2019-11-07 00:44:39,525 INFO L78 Accepts]: Start accepts. Automaton has 10962 states and 17435 transitions. Word has length 105 [2019-11-07 00:44:39,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:39,526 INFO L462 AbstractCegarLoop]: Abstraction has 10962 states and 17435 transitions. [2019-11-07 00:44:39,526 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:39,526 INFO L276 IsEmpty]: Start isEmpty. Operand 10962 states and 17435 transitions. [2019-11-07 00:44:39,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-07 00:44:39,528 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:39,529 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:39,529 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:39,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:39,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1061987221, now seen corresponding path program 1 times [2019-11-07 00:44:39,530 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:39,530 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110085723] [2019-11-07 00:44:39,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 00:44:39,725 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110085723] [2019-11-07 00:44:39,725 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:39,726 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:39,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998760219] [2019-11-07 00:44:39,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:39,727 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:39,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:39,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:39,727 INFO L87 Difference]: Start difference. First operand 10962 states and 17435 transitions. Second operand 7 states. [2019-11-07 00:44:43,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:43,292 INFO L93 Difference]: Finished difference Result 32902 states and 54000 transitions. [2019-11-07 00:44:43,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:44:43,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-11-07 00:44:43,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:43,441 INFO L225 Difference]: With dead ends: 32902 [2019-11-07 00:44:43,441 INFO L226 Difference]: Without dead ends: 21974 [2019-11-07 00:44:43,485 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:44:43,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21974 states. [2019-11-07 00:44:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21974 to 21788. [2019-11-07 00:44:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21788 states. [2019-11-07 00:44:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21788 states to 21788 states and 35353 transitions. [2019-11-07 00:44:44,517 INFO L78 Accepts]: Start accepts. Automaton has 21788 states and 35353 transitions. Word has length 113 [2019-11-07 00:44:44,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:44,518 INFO L462 AbstractCegarLoop]: Abstraction has 21788 states and 35353 transitions. [2019-11-07 00:44:44,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:44,518 INFO L276 IsEmpty]: Start isEmpty. Operand 21788 states and 35353 transitions. [2019-11-07 00:44:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-11-07 00:44:44,520 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:44,520 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:44,520 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:44,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:44,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1342674105, now seen corresponding path program 1 times [2019-11-07 00:44:44,521 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:44,521 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677736476] [2019-11-07 00:44:44,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 00:44:44,647 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677736476] [2019-11-07 00:44:44,647 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:44,647 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:44,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919140279] [2019-11-07 00:44:44,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:44,648 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:44,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:44,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:44,649 INFO L87 Difference]: Start difference. First operand 21788 states and 35353 transitions. Second operand 4 states. [2019-11-07 00:44:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:45,476 INFO L93 Difference]: Finished difference Result 43650 states and 71572 transitions. [2019-11-07 00:44:45,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:44:45,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-11-07 00:44:45,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:45,612 INFO L225 Difference]: With dead ends: 43650 [2019-11-07 00:44:45,612 INFO L226 Difference]: Without dead ends: 21893 [2019-11-07 00:44:45,690 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 00:44:45,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21893 states.