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_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:12:06,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:12:06,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:12:06,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:12:06,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:12:06,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:12:06,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:12:06,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:12:06,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:12:06,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:12:06,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:12:06,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:12:06,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:12:06,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:12:06,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:12:06,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:12:06,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:12:06,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:12:06,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:12:06,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:12:06,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:12:06,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:12:06,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:12:06,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:12:06,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:12:06,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:12:06,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:12:06,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:12:06,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:12:06,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:12:06,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:12:06,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:12:06,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:12:06,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:12:06,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:12:06,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:12:06,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:12:06,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:12:06,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:12:06,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:12:06,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:12:06,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:12:06,465 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:12:06,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:12:06,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:12:06,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:12:06,468 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:12:06,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:12:06,468 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:12:06,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:12:06,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:12:06,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:12:06,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:12:06,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:12:06,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:12:06,471 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:12:06,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:12:06,471 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:12:06,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:12:06,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:12:06,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:12:06,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:12:06,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:12:06,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:06,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:12:06,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:12:06,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:12:06,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:12:06,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:12:06,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:12:06,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:12:06,759 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:12:06,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:12:06,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:12:06,777 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:12:06,778 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:12:06,779 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_productSimulator.cil.c [2019-10-13 21:12:06,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b1eae7a3/54f55cfb4b194c60963868e507f23e1f/FLAG57041ce30 [2019-10-13 21:12:07,524 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:12:07,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_productSimulator.cil.c [2019-10-13 21:12:07,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b1eae7a3/54f55cfb4b194c60963868e507f23e1f/FLAG57041ce30 [2019-10-13 21:12:07,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b1eae7a3/54f55cfb4b194c60963868e507f23e1f [2019-10-13 21:12:07,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:12:07,701 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:12:07,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:07,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:12:07,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:12:07,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3534b1cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07, skipping insertion in model container [2019-10-13 21:12:07,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,726 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:12:07,807 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:12:08,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:08,616 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:12:08,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:08,853 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:12:08,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08 WrapperNode [2019-10-13 21:12:08,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:08,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:12:08,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:12:08,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:12:08,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... [2019-10-13 21:12:08,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... [2019-10-13 21:12:08,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... [2019-10-13 21:12:08,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... [2019-10-13 21:12:09,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... [2019-10-13 21:12:09,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... [2019-10-13 21:12:09,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... [2019-10-13 21:12:09,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:12:09,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:12:09,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:12:09,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:12:09,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:09,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:12:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:12:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:09,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:12:09,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:12:09,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:12:09,213 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:12:09,213 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:12:09,214 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:12:09,214 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:12:09,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:12:09,214 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:12:09,214 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:12:09,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:12:09,215 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:12:09,215 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:12:09,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:12:09,215 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:12:09,216 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:12:09,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-13 21:12:09,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-13 21:12:09,217 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:12:09,217 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-13 21:12:09,217 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-13 21:12:09,217 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:12:09,217 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-13 21:12:09,217 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-13 21:12:09,217 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-13 21:12:09,218 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-13 21:12:09,218 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:12:09,218 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:12:09,218 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:12:09,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:12:09,218 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:12:09,219 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:12:09,219 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:12:09,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:12:09,219 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:12:09,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:12:09,219 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-13 21:12:09,219 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-13 21:12:09,220 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-13 21:12:09,220 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-13 21:12:09,220 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:12:09,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:12:09,220 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:12:09,220 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-13 21:12:09,221 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-13 21:12:09,221 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-13 21:12:09,221 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-13 21:12:09,221 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:12:09,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:12:09,221 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:12:09,221 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-13 21:12:09,222 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-13 21:12:09,222 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:12:09,222 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-13 21:12:09,222 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-13 21:12:09,222 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:12:09,222 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:12:09,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 21:12:09,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 21:12:09,223 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:12:09,223 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:12:09,223 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:12:09,223 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:12:09,224 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:12:09,224 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:12:09,224 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:12:09,224 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:12:09,224 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:12:09,224 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:12:09,224 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:12:09,225 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:12:09,225 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:12:09,225 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:12:09,225 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:12:09,225 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:12:09,225 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:12:09,226 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:12:09,226 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:12:09,226 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:12:09,226 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:12:09,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:12:09,226 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:12:09,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:12:09,227 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:12:09,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:12:09,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:12:09,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:12:09,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:12:09,227 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:12:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:12:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:12:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:12:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:12:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:12:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:12:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:12:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:12:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:12:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:12:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:12:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:12:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:12:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:12:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:12:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:12:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:12:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:12:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:12:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:12:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:12:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:12:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:12:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:12:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:12:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:12:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:12:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:12:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:12:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:12:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:12:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:12:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:12:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:12:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:12:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:12:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:12:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:12:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:12:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 21:12:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 21:12:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-13 21:12:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-13 21:12:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-13 21:12:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-13 21:12:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-13 21:12:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-13 21:12:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-13 21:12:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-13 21:12:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:12:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:12:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:12:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:12:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:12:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-13 21:12:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-13 21:12:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-13 21:12:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-13 21:12:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:12:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:12:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-13 21:12:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-13 21:12:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-13 21:12:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-13 21:12:09,239 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:12:09,239 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:12:09,239 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:12:09,239 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-13 21:12:09,239 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-13 21:12:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:12:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:12:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-13 21:12:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-13 21:12:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:12:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:12:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:12:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:12:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:12:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:12:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:12:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:12:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:12:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:12:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:12:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:12:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:12:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:12:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:12:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:12:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:12:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:12:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:12:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:12:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:12:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:12:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:12:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:12:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:12:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:12:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:12:11,614 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:12:11,614 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:12:11,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:11 BoogieIcfgContainer [2019-10-13 21:12:11,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:12:11,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:12:11,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:12:11,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:12:11,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:12:07" (1/3) ... [2019-10-13 21:12:11,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69225f8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:11, skipping insertion in model container [2019-10-13 21:12:11,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:08" (2/3) ... [2019-10-13 21:12:11,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69225f8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:11, skipping insertion in model container [2019-10-13 21:12:11,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:11" (3/3) ... [2019-10-13 21:12:11,627 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_productSimulator.cil.c [2019-10-13 21:12:11,637 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:12:11,646 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:12:11,658 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:12:11,734 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:12:11,734 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:12:11,734 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:12:11,734 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:12:11,735 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:12:11,735 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:12:11,735 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:12:11,735 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:12:11,789 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states. [2019-10-13 21:12:11,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 21:12:11,819 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:11,820 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:11,823 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:11,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:11,830 INFO L82 PathProgramCache]: Analyzing trace with hash -895643454, now seen corresponding path program 1 times [2019-10-13 21:12:11,842 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:11,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995339189] [2019-10-13 21:12:11,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:11,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:11,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:12,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995339189] [2019-10-13 21:12:12,629 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:12,629 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:12,630 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635951537] [2019-10-13 21:12:12,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:12,640 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:12,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:12,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:12,658 INFO L87 Difference]: Start difference. First operand 949 states. Second operand 6 states. [2019-10-13 21:12:12,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:12,889 INFO L93 Difference]: Finished difference Result 1545 states and 2408 transitions. [2019-10-13 21:12:12,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:12,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2019-10-13 21:12:12,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:12,935 INFO L225 Difference]: With dead ends: 1545 [2019-10-13 21:12:12,936 INFO L226 Difference]: Without dead ends: 776 [2019-10-13 21:12:12,951 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:12,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2019-10-13 21:12:13,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2019-10-13 21:12:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2019-10-13 21:12:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1196 transitions. [2019-10-13 21:12:13,076 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1196 transitions. Word has length 127 [2019-10-13 21:12:13,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:13,079 INFO L462 AbstractCegarLoop]: Abstraction has 776 states and 1196 transitions. [2019-10-13 21:12:13,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1196 transitions. [2019-10-13 21:12:13,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 21:12:13,083 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:13,084 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:13,084 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:13,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:13,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1694033836, now seen corresponding path program 1 times [2019-10-13 21:12:13,085 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:13,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120535558] [2019-10-13 21:12:13,085 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,085 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:13,476 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120535558] [2019-10-13 21:12:13,476 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:13,476 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:13,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650888236] [2019-10-13 21:12:13,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:13,481 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:13,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:13,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:13,482 INFO L87 Difference]: Start difference. First operand 776 states and 1196 transitions. Second operand 7 states. [2019-10-13 21:12:13,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:13,632 INFO L93 Difference]: Finished difference Result 1508 states and 2347 transitions. [2019-10-13 21:12:13,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:13,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2019-10-13 21:12:13,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:13,649 INFO L225 Difference]: With dead ends: 1508 [2019-10-13 21:12:13,649 INFO L226 Difference]: Without dead ends: 785 [2019-10-13 21:12:13,654 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:13,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2019-10-13 21:12:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 783. [2019-10-13 21:12:13,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 783 states. [2019-10-13 21:12:13,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1205 transitions. [2019-10-13 21:12:13,741 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1205 transitions. Word has length 128 [2019-10-13 21:12:13,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:13,742 INFO L462 AbstractCegarLoop]: Abstraction has 783 states and 1205 transitions. [2019-10-13 21:12:13,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:13,743 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1205 transitions. [2019-10-13 21:12:13,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 21:12:13,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:13,753 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:13,753 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:13,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:13,754 INFO L82 PathProgramCache]: Analyzing trace with hash 54665970, now seen corresponding path program 1 times [2019-10-13 21:12:13,754 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:13,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062206702] [2019-10-13 21:12:13,755 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,755 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:13,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062206702] [2019-10-13 21:12:13,978 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:13,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:13,978 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726939832] [2019-10-13 21:12:13,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:13,981 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:13,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:13,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:13,982 INFO L87 Difference]: Start difference. First operand 783 states and 1205 transitions. Second operand 4 states. [2019-10-13 21:12:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:14,053 INFO L93 Difference]: Finished difference Result 1511 states and 2348 transitions. [2019-10-13 21:12:14,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:14,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-10-13 21:12:14,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:14,059 INFO L225 Difference]: With dead ends: 1511 [2019-10-13 21:12:14,060 INFO L226 Difference]: Without dead ends: 765 [2019-10-13 21:12:14,064 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:14,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2019-10-13 21:12:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2019-10-13 21:12:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2019-10-13 21:12:14,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1172 transitions. [2019-10-13 21:12:14,091 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1172 transitions. Word has length 129 [2019-10-13 21:12:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:14,092 INFO L462 AbstractCegarLoop]: Abstraction has 765 states and 1172 transitions. [2019-10-13 21:12:14,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1172 transitions. [2019-10-13 21:12:14,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 21:12:14,095 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:14,095 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:14,095 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:14,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:14,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1943043330, now seen corresponding path program 1 times [2019-10-13 21:12:14,096 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:14,096 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113492151] [2019-10-13 21:12:14,096 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,097 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:14,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113492151] [2019-10-13 21:12:14,363 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:14,363 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:14,363 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142637920] [2019-10-13 21:12:14,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:14,365 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:14,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:14,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:14,365 INFO L87 Difference]: Start difference. First operand 765 states and 1172 transitions. Second operand 7 states. [2019-10-13 21:12:14,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:14,486 INFO L93 Difference]: Finished difference Result 1480 states and 2290 transitions. [2019-10-13 21:12:14,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:14,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2019-10-13 21:12:14,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:14,504 INFO L225 Difference]: With dead ends: 1480 [2019-10-13 21:12:14,504 INFO L226 Difference]: Without dead ends: 759 [2019-10-13 21:12:14,512 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:14,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2019-10-13 21:12:14,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2019-10-13 21:12:14,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2019-10-13 21:12:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1159 transitions. [2019-10-13 21:12:14,540 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1159 transitions. Word has length 129 [2019-10-13 21:12:14,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:14,541 INFO L462 AbstractCegarLoop]: Abstraction has 759 states and 1159 transitions. [2019-10-13 21:12:14,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:14,541 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1159 transitions. [2019-10-13 21:12:14,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 21:12:14,545 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:14,545 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:14,545 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:14,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:14,546 INFO L82 PathProgramCache]: Analyzing trace with hash 264736656, now seen corresponding path program 1 times [2019-10-13 21:12:14,546 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:14,547 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683937705] [2019-10-13 21:12:14,548 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,548 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:14,727 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683937705] [2019-10-13 21:12:14,727 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:14,728 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:14,728 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387217109] [2019-10-13 21:12:14,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:14,729 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:14,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:14,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:14,730 INFO L87 Difference]: Start difference. First operand 759 states and 1159 transitions. Second operand 7 states. [2019-10-13 21:12:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:14,853 INFO L93 Difference]: Finished difference Result 1468 states and 2264 transitions. [2019-10-13 21:12:14,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:14,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2019-10-13 21:12:14,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:14,869 INFO L225 Difference]: With dead ends: 1468 [2019-10-13 21:12:14,870 INFO L226 Difference]: Without dead ends: 753 [2019-10-13 21:12:14,875 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:14,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2019-10-13 21:12:14,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2019-10-13 21:12:14,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-10-13 21:12:14,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1146 transitions. [2019-10-13 21:12:14,919 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1146 transitions. Word has length 130 [2019-10-13 21:12:14,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:14,920 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 1146 transitions. [2019-10-13 21:12:14,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:14,921 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1146 transitions. [2019-10-13 21:12:14,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 21:12:14,928 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:14,929 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:14,929 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:14,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:14,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1030829082, now seen corresponding path program 1 times [2019-10-13 21:12:14,930 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:14,930 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528636333] [2019-10-13 21:12:14,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,931 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:15,261 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:15,262 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528636333] [2019-10-13 21:12:15,263 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:15,263 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:15,263 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499017999] [2019-10-13 21:12:15,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:15,264 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:15,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:15,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:15,265 INFO L87 Difference]: Start difference. First operand 753 states and 1146 transitions. Second operand 7 states. [2019-10-13 21:12:15,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:15,369 INFO L93 Difference]: Finished difference Result 1456 states and 2238 transitions. [2019-10-13 21:12:15,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:15,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-13 21:12:15,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:15,377 INFO L225 Difference]: With dead ends: 1456 [2019-10-13 21:12:15,377 INFO L226 Difference]: Without dead ends: 747 [2019-10-13 21:12:15,381 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:15,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-10-13 21:12:15,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-10-13 21:12:15,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-10-13 21:12:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1133 transitions. [2019-10-13 21:12:15,409 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1133 transitions. Word has length 131 [2019-10-13 21:12:15,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:15,410 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1133 transitions. [2019-10-13 21:12:15,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1133 transitions. [2019-10-13 21:12:15,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 21:12:15,412 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:15,412 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:15,413 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:15,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:15,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1840417433, now seen corresponding path program 1 times [2019-10-13 21:12:15,413 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:15,414 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882216953] [2019-10-13 21:12:15,414 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,414 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:15,599 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882216953] [2019-10-13 21:12:15,599 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:15,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:15,600 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853217565] [2019-10-13 21:12:15,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:15,600 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:15,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:15,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:15,601 INFO L87 Difference]: Start difference. First operand 747 states and 1133 transitions. Second operand 7 states. [2019-10-13 21:12:15,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:15,700 INFO L93 Difference]: Finished difference Result 1444 states and 2212 transitions. [2019-10-13 21:12:15,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:15,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-13 21:12:15,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:15,707 INFO L225 Difference]: With dead ends: 1444 [2019-10-13 21:12:15,707 INFO L226 Difference]: Without dead ends: 747 [2019-10-13 21:12:15,711 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:15,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-10-13 21:12:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-10-13 21:12:15,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-10-13 21:12:15,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1132 transitions. [2019-10-13 21:12:15,744 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1132 transitions. Word has length 131 [2019-10-13 21:12:15,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:15,745 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1132 transitions. [2019-10-13 21:12:15,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:15,746 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1132 transitions. [2019-10-13 21:12:15,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 21:12:15,748 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:15,748 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:15,748 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:15,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:15,748 INFO L82 PathProgramCache]: Analyzing trace with hash 948639604, now seen corresponding path program 1 times [2019-10-13 21:12:15,749 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:15,749 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867123868] [2019-10-13 21:12:15,749 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,749 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:15,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867123868] [2019-10-13 21:12:15,894 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:15,898 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:15,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849918253] [2019-10-13 21:12:15,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:15,899 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:15,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:15,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:15,900 INFO L87 Difference]: Start difference. First operand 747 states and 1132 transitions. Second operand 5 states. [2019-10-13 21:12:16,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:16,059 INFO L93 Difference]: Finished difference Result 1443 states and 2209 transitions. [2019-10-13 21:12:16,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:16,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2019-10-13 21:12:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:16,065 INFO L225 Difference]: With dead ends: 1443 [2019-10-13 21:12:16,065 INFO L226 Difference]: Without dead ends: 747 [2019-10-13 21:12:16,069 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:16,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-10-13 21:12:16,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-10-13 21:12:16,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-10-13 21:12:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1131 transitions. [2019-10-13 21:12:16,098 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1131 transitions. Word has length 132 [2019-10-13 21:12:16,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:16,098 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1131 transitions. [2019-10-13 21:12:16,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:16,098 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1131 transitions. [2019-10-13 21:12:16,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-13 21:12:16,100 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:16,101 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:16,101 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:16,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:16,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1456106658, now seen corresponding path program 1 times [2019-10-13 21:12:16,101 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:16,102 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980228804] [2019-10-13 21:12:16,102 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:16,102 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:16,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:16,228 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980228804] [2019-10-13 21:12:16,228 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:16,228 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:16,229 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762441868] [2019-10-13 21:12:16,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:16,229 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:16,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:16,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:16,230 INFO L87 Difference]: Start difference. First operand 747 states and 1131 transitions. Second operand 5 states. [2019-10-13 21:12:16,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:16,322 INFO L93 Difference]: Finished difference Result 1443 states and 2207 transitions. [2019-10-13 21:12:16,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:16,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2019-10-13 21:12:16,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:16,330 INFO L225 Difference]: With dead ends: 1443 [2019-10-13 21:12:16,330 INFO L226 Difference]: Without dead ends: 747 [2019-10-13 21:12:16,336 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:16,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-10-13 21:12:16,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-10-13 21:12:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-10-13 21:12:16,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1130 transitions. [2019-10-13 21:12:16,370 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1130 transitions. Word has length 133 [2019-10-13 21:12:16,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:16,371 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1130 transitions. [2019-10-13 21:12:16,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:16,371 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1130 transitions. [2019-10-13 21:12:16,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-13 21:12:16,374 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:16,375 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:16,375 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:16,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:16,376 INFO L82 PathProgramCache]: Analyzing trace with hash 857053327, now seen corresponding path program 1 times [2019-10-13 21:12:16,376 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:16,376 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614218280] [2019-10-13 21:12:16,377 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:16,377 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:16,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:16,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614218280] [2019-10-13 21:12:16,559 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:16,559 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:16,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553968145] [2019-10-13 21:12:16,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:16,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:16,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:16,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:16,562 INFO L87 Difference]: Start difference. First operand 747 states and 1130 transitions. Second operand 5 states. [2019-10-13 21:12:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:16,659 INFO L93 Difference]: Finished difference Result 1443 states and 2205 transitions. [2019-10-13 21:12:16,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:16,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2019-10-13 21:12:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:16,667 INFO L225 Difference]: With dead ends: 1443 [2019-10-13 21:12:16,667 INFO L226 Difference]: Without dead ends: 747 [2019-10-13 21:12:16,672 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:16,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-10-13 21:12:16,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-10-13 21:12:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-10-13 21:12:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1129 transitions. [2019-10-13 21:12:16,698 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1129 transitions. Word has length 134 [2019-10-13 21:12:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:16,699 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1129 transitions. [2019-10-13 21:12:16,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:16,699 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1129 transitions. [2019-10-13 21:12:16,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 21:12:16,701 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:16,701 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:16,702 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:16,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:16,702 INFO L82 PathProgramCache]: Analyzing trace with hash -898548391, now seen corresponding path program 1 times [2019-10-13 21:12:16,702 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:16,703 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56789750] [2019-10-13 21:12:16,703 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:16,703 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:16,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:16,915 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56789750] [2019-10-13 21:12:16,916 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:16,916 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:16,916 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899744554] [2019-10-13 21:12:16,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:16,917 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:16,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:16,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:16,918 INFO L87 Difference]: Start difference. First operand 747 states and 1129 transitions. Second operand 5 states. [2019-10-13 21:12:16,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:16,988 INFO L93 Difference]: Finished difference Result 1443 states and 2203 transitions. [2019-10-13 21:12:16,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:16,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2019-10-13 21:12:16,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:16,995 INFO L225 Difference]: With dead ends: 1443 [2019-10-13 21:12:16,996 INFO L226 Difference]: Without dead ends: 747 [2019-10-13 21:12:17,000 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:17,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2019-10-13 21:12:17,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2019-10-13 21:12:17,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2019-10-13 21:12:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1128 transitions. [2019-10-13 21:12:17,026 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1128 transitions. Word has length 135 [2019-10-13 21:12:17,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:17,026 INFO L462 AbstractCegarLoop]: Abstraction has 747 states and 1128 transitions. [2019-10-13 21:12:17,026 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:17,027 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1128 transitions. [2019-10-13 21:12:17,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 21:12:17,029 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:17,029 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:17,029 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:17,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:17,030 INFO L82 PathProgramCache]: Analyzing trace with hash 63255978, now seen corresponding path program 1 times [2019-10-13 21:12:17,030 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:17,030 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569938934] [2019-10-13 21:12:17,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:17,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:17,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:12:17,228 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569938934] [2019-10-13 21:12:17,228 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586138521] [2019-10-13 21:12:17,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:17,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:12:17,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:17,905 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:18,110 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:18,110 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2019-10-13 21:12:18,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211922542] [2019-10-13 21:12:18,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:18,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:18,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:18,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:12:18,113 INFO L87 Difference]: Start difference. First operand 747 states and 1128 transitions. Second operand 3 states. [2019-10-13 21:12:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:18,217 INFO L93 Difference]: Finished difference Result 2129 states and 3266 transitions. [2019-10-13 21:12:18,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:18,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2019-10-13 21:12:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:18,230 INFO L225 Difference]: With dead ends: 2129 [2019-10-13 21:12:18,231 INFO L226 Difference]: Without dead ends: 1437 [2019-10-13 21:12:18,236 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:12:18,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2019-10-13 21:12:18,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1433. [2019-10-13 21:12:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2019-10-13 21:12:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2189 transitions. [2019-10-13 21:12:18,309 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2189 transitions. Word has length 136 [2019-10-13 21:12:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:18,309 INFO L462 AbstractCegarLoop]: Abstraction has 1433 states and 2189 transitions. [2019-10-13 21:12:18,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2189 transitions. [2019-10-13 21:12:18,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 21:12:18,312 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:18,312 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:18,520 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:18,521 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:18,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:18,522 INFO L82 PathProgramCache]: Analyzing trace with hash -983256524, now seen corresponding path program 1 times [2019-10-13 21:12:18,523 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:18,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978990600] [2019-10-13 21:12:18,523 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:18,524 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:18,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:12:18,728 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978990600] [2019-10-13 21:12:18,728 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867052876] [2019-10-13 21:12:18,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:19,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:12:19,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:19,435 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:19,592 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:19,592 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2019-10-13 21:12:19,593 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134248265] [2019-10-13 21:12:19,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:19,594 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:19,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:19,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:12:19,594 INFO L87 Difference]: Start difference. First operand 1433 states and 2189 transitions. Second operand 3 states. [2019-10-13 21:12:19,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:19,719 INFO L93 Difference]: Finished difference Result 4037 states and 6269 transitions. [2019-10-13 21:12:19,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:19,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2019-10-13 21:12:19,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:19,743 INFO L225 Difference]: With dead ends: 4037 [2019-10-13 21:12:19,743 INFO L226 Difference]: Without dead ends: 2683 [2019-10-13 21:12:19,752 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:12:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2019-10-13 21:12:19,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2661. [2019-10-13 21:12:19,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2661 states. [2019-10-13 21:12:19,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 4091 transitions. [2019-10-13 21:12:19,891 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 4091 transitions. Word has length 137 [2019-10-13 21:12:19,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:19,892 INFO L462 AbstractCegarLoop]: Abstraction has 2661 states and 4091 transitions. [2019-10-13 21:12:19,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:19,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 4091 transitions. [2019-10-13 21:12:19,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 21:12:19,895 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:19,895 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:20,109 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:20,110 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:20,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:20,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1740928992, now seen corresponding path program 1 times [2019-10-13 21:12:20,111 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:20,111 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450419299] [2019-10-13 21:12:20,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:20,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:20,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:12:20,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450419299] [2019-10-13 21:12:20,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936537420] [2019-10-13 21:12:20,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:21,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:12:21,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:21,173 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:21,336 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:21,336 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2019-10-13 21:12:21,336 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128089951] [2019-10-13 21:12:21,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:21,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:21,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:21,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:12:21,338 INFO L87 Difference]: Start difference. First operand 2661 states and 4091 transitions. Second operand 3 states. [2019-10-13 21:12:21,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:21,584 INFO L93 Difference]: Finished difference Result 6493 states and 10080 transitions. [2019-10-13 21:12:21,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:21,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2019-10-13 21:12:21,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:21,615 INFO L225 Difference]: With dead ends: 6493 [2019-10-13 21:12:21,615 INFO L226 Difference]: Without dead ends: 3911 [2019-10-13 21:12:21,631 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:12:21,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3911 states. [2019-10-13 21:12:21,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3911 to 3817. [2019-10-13 21:12:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3817 states. [2019-10-13 21:12:21,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3817 states to 3817 states and 5898 transitions. [2019-10-13 21:12:21,839 INFO L78 Accepts]: Start accepts. Automaton has 3817 states and 5898 transitions. Word has length 138 [2019-10-13 21:12:21,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:21,841 INFO L462 AbstractCegarLoop]: Abstraction has 3817 states and 5898 transitions. [2019-10-13 21:12:21,841 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:21,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3817 states and 5898 transitions. [2019-10-13 21:12:21,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 21:12:21,845 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:21,846 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:22,059 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:22,060 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:22,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:22,061 INFO L82 PathProgramCache]: Analyzing trace with hash -369524467, now seen corresponding path program 1 times [2019-10-13 21:12:22,061 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:22,063 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279925711] [2019-10-13 21:12:22,063 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:22,063 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:22,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:22,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279925711] [2019-10-13 21:12:22,239 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:22,240 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:22,240 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523290437] [2019-10-13 21:12:22,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:22,241 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:22,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:22,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:22,241 INFO L87 Difference]: Start difference. First operand 3817 states and 5898 transitions. Second operand 7 states. [2019-10-13 21:12:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:25,981 INFO L93 Difference]: Finished difference Result 11249 states and 17910 transitions. [2019-10-13 21:12:25,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:12:25,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2019-10-13 21:12:25,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:26,057 INFO L225 Difference]: With dead ends: 11249 [2019-10-13 21:12:26,058 INFO L226 Difference]: Without dead ends: 7511 [2019-10-13 21:12:26,083 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:12:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7511 states. [2019-10-13 21:12:26,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7511 to 7375. [2019-10-13 21:12:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7375 states. [2019-10-13 21:12:26,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7375 states to 7375 states and 11600 transitions. [2019-10-13 21:12:26,544 INFO L78 Accepts]: Start accepts. Automaton has 7375 states and 11600 transitions. Word has length 140 [2019-10-13 21:12:26,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:26,545 INFO L462 AbstractCegarLoop]: Abstraction has 7375 states and 11600 transitions. [2019-10-13 21:12:26,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:26,545 INFO L276 IsEmpty]: Start isEmpty. Operand 7375 states and 11600 transitions. [2019-10-13 21:12:26,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 21:12:26,549 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:26,550 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:26,550 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:26,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:26,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1455513363, now seen corresponding path program 1 times [2019-10-13 21:12:26,551 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:26,552 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369115025] [2019-10-13 21:12:26,552 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:26,552 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:26,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:12:26,770 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369115025] [2019-10-13 21:12:26,770 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789190905] [2019-10-13 21:12:26,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:28,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 3380 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:12:28,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:28,185 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:28,186 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:28,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:12:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:28,485 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:28,485 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [10] total 19 [2019-10-13 21:12:28,485 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807002912] [2019-10-13 21:12:28,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:12:28,487 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:28,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:12:28,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:12:28,487 INFO L87 Difference]: Start difference. First operand 7375 states and 11600 transitions. Second operand 11 states. [2019-10-13 21:12:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:35,168 INFO L93 Difference]: Finished difference Result 33339 states and 53967 transitions. [2019-10-13 21:12:35,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:12:35,169 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 141 [2019-10-13 21:12:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:35,482 INFO L225 Difference]: With dead ends: 33339 [2019-10-13 21:12:35,483 INFO L226 Difference]: Without dead ends: 26043 [2019-10-13 21:12:35,527 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 274 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:12:35,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26043 states. [2019-10-13 21:12:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26043 to 25815. [2019-10-13 21:12:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25815 states. [2019-10-13 21:12:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25815 states to 25815 states and 40631 transitions. [2019-10-13 21:12:36,528 INFO L78 Accepts]: Start accepts. Automaton has 25815 states and 40631 transitions. Word has length 141 [2019-10-13 21:12:36,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:36,529 INFO L462 AbstractCegarLoop]: Abstraction has 25815 states and 40631 transitions. [2019-10-13 21:12:36,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:12:36,529 INFO L276 IsEmpty]: Start isEmpty. Operand 25815 states and 40631 transitions. [2019-10-13 21:12:36,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 21:12:36,532 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:36,532 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:36,740 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:36,741 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:36,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:36,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1904993576, now seen corresponding path program 1 times [2019-10-13 21:12:36,741 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:36,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548073088] [2019-10-13 21:12:36,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:36,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:36,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:12:36,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548073088] [2019-10-13 21:12:36,870 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:36,870 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:36,871 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449153835] [2019-10-13 21:12:36,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:36,871 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:36,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:36,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:36,872 INFO L87 Difference]: Start difference. First operand 25815 states and 40631 transitions. Second operand 4 states. [2019-10-13 21:12:37,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:37,934 INFO L93 Difference]: Finished difference Result 51587 states and 82095 transitions. [2019-10-13 21:12:37,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:37,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2019-10-13 21:12:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:38,153 INFO L225 Difference]: With dead ends: 51587 [2019-10-13 21:12:38,153 INFO L226 Difference]: Without dead ends: 25851 [2019-10-13 21:12:38,242 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:38,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25851 states.