/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:12:16,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:12:16,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:12:16,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:12:16,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:12:16,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:12:16,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:12:16,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:12:16,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:12:16,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:12:16,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:12:16,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:12:16,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:12:16,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:12:16,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:12:16,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:12:16,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:12:16,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:12:16,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:12:16,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:12:16,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:12:16,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:12:16,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:12:16,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:12:16,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:12:16,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:12:16,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:12:16,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:12:16,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:12:16,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:12:16,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:12:16,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:12:16,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:12:16,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:12:16,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:12:16,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:12:16,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:12:16,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:12:16,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:12:16,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:12:16,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:12:16,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:12:16,746 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:12:16,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:12:16,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:12:16,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:12:16,748 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:12:16,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:12:16,748 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:12:16,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:12:16,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:12:16,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:12:16,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:12:16,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:12:16,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:12:16,750 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:12:16,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:12:16,750 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:12:16,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:12:16,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:12:16,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:12:16,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:12:16,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:12:16,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:12:16,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:12:16,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:12:16,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:12:16,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:12:16,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:12:16,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:12:16,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:12:17,039 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:12:17,052 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:12:17,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:12:17,057 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:12:17,058 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:12:17,059 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product26.cil.c [2019-11-07 04:12:17,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/229cb64ab/162cbff4e4a84614b6ac314cf6728bbb/FLAG203ace293 [2019-11-07 04:12:17,725 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:12:17,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product26.cil.c [2019-11-07 04:12:17,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/229cb64ab/162cbff4e4a84614b6ac314cf6728bbb/FLAG203ace293 [2019-11-07 04:12:17,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/229cb64ab/162cbff4e4a84614b6ac314cf6728bbb [2019-11-07 04:12:17,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:12:17,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:12:17,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:12:17,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:12:17,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:12:17,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:12:17" (1/1) ... [2019-11-07 04:12:17,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2247644b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:17, skipping insertion in model container [2019-11-07 04:12:17,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:12:17" (1/1) ... [2019-11-07 04:12:17,912 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:12:18,004 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:12:18,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:12:18,828 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:12:18,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:12:19,052 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:12:19,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:19 WrapperNode [2019-11-07 04:12:19,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:12:19,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:12:19,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:12:19,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:12:19,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:19" (1/1) ... [2019-11-07 04:12:19,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:19" (1/1) ... [2019-11-07 04:12:19,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:19" (1/1) ... [2019-11-07 04:12:19,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:19" (1/1) ... [2019-11-07 04:12:19,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:19" (1/1) ... [2019-11-07 04:12:19,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:19" (1/1) ... [2019-11-07 04:12:19,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:19" (1/1) ... [2019-11-07 04:12:19,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:12:19,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:12:19,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:12:19,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:12:19,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:12:19,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:12:19,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:12:19,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:12:19,348 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:12:19,348 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:12:19,348 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:12:19,349 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:12:19,349 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:12:19,349 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:12:19,349 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:12:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:12:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:12:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:12:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:12:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:12:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:12:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:12:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:12:19,352 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:12:19,352 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:12:19,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:12:19,352 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:12:19,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:12:19,353 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:12:19,353 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:12:19,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:12:19,353 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:12:19,354 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:12:19,354 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:12:19,354 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 04:12:19,354 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:12:19,355 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:12:19,355 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:12:19,355 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:12:19,355 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:12:19,355 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:12:19,356 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:12:19,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:12:19,356 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:12:19,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:12:19,356 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:12:19,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:12:19,357 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:12:19,357 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:12:19,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:12:19,357 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:12:19,357 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2019-11-07 04:12:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:12:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__empty [2019-11-07 04:12:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:12:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:12:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:12:19,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:12:19,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:12:19,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:12:19,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:12:19,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:12:19,360 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:12:19,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:12:19,360 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:12:19,360 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:12:19,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:12:19,361 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:12:19,361 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:12:19,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:12:19,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:12:19,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:12:19,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:12:19,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:12:19,362 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:12:19,362 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:12:19,362 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:12:19,362 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:12:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:12:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:12:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:12:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:12:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:12:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:12:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:12:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:12:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:12:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:12:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:12:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:12:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:12:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:12:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:12:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:12:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:12:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:12:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:12:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:12:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:12:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:12:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:12:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:12:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:12:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:12:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:12:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:12:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:12:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:12:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:12:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:12:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:12:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:12:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:12:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:12:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:12:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:12:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:12:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:12:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:12:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:12:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:12:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:12:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:12:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:12:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:12:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:12:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:12:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:12:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:12:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:12:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:12:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 04:12:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:12:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:12:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:12:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:12:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:12:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:12:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:12:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:12:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:12:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:12:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2019-11-07 04:12:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:12:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:12:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__empty [2019-11-07 04:12:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:12:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:12:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:12:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:12:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:12:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:12:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:12:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:12:19,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:12:19,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:12:19,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:12:19,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:12:19,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:12:19,377 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:12:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:12:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:12:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:12:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:12:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:12:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:12:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:12:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:12:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:12:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:12:24,372 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:12:24,373 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:12:24,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:12:24 BoogieIcfgContainer [2019-11-07 04:12:24,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:12:24,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:12:24,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:12:24,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:12:24,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:12:17" (1/3) ... [2019-11-07 04:12:24,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4f63b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:12:24, skipping insertion in model container [2019-11-07 04:12:24,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:19" (2/3) ... [2019-11-07 04:12:24,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4f63b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:12:24, skipping insertion in model container [2019-11-07 04:12:24,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:12:24" (3/3) ... [2019-11-07 04:12:24,386 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product26.cil.c [2019-11-07 04:12:24,400 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:12:24,415 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:12:24,431 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:12:24,471 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:12:24,472 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:12:24,472 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:12:24,472 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:12:24,472 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:12:24,473 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:12:24,473 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:12:24,473 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:12:24,512 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states. [2019-11-07 04:12:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-07 04:12:24,525 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:24,526 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:12:24,529 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:24,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:24,538 INFO L82 PathProgramCache]: Analyzing trace with hash 693571216, now seen corresponding path program 1 times [2019-11-07 04:12:24,554 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:24,554 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387115797] [2019-11-07 04:12:24,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:12:25,345 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387115797] [2019-11-07 04:12:25,346 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:25,346 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:12:25,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346858839] [2019-11-07 04:12:25,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:12:25,353 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:25,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:12:25,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:12:25,370 INFO L87 Difference]: Start difference. First operand 590 states. Second operand 3 states. [2019-11-07 04:12:25,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:25,672 INFO L93 Difference]: Finished difference Result 1318 states and 2026 transitions. [2019-11-07 04:12:25,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:12:25,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-11-07 04:12:25,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:25,705 INFO L225 Difference]: With dead ends: 1318 [2019-11-07 04:12:25,705 INFO L226 Difference]: Without dead ends: 866 [2019-11-07 04:12:25,720 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:12:25,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2019-11-07 04:12:25,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 820. [2019-11-07 04:12:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2019-11-07 04:12:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1256 transitions. [2019-11-07 04:12:25,935 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1256 transitions. Word has length 81 [2019-11-07 04:12:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:25,936 INFO L462 AbstractCegarLoop]: Abstraction has 820 states and 1256 transitions. [2019-11-07 04:12:25,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:12:25,937 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1256 transitions. [2019-11-07 04:12:25,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-07 04:12:25,950 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:25,950 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:12:25,951 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:25,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:25,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1331172463, now seen corresponding path program 1 times [2019-11-07 04:12:25,952 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:25,952 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62212301] [2019-11-07 04:12:25,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:12:26,303 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62212301] [2019-11-07 04:12:26,303 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:26,303 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:12:26,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390510170] [2019-11-07 04:12:26,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:12:26,306 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:26,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:12:26,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:12:26,307 INFO L87 Difference]: Start difference. First operand 820 states and 1256 transitions. Second operand 7 states. [2019-11-07 04:12:29,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:29,452 INFO L93 Difference]: Finished difference Result 2446 states and 3840 transitions. [2019-11-07 04:12:29,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:12:29,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2019-11-07 04:12:29,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:29,470 INFO L225 Difference]: With dead ends: 2446 [2019-11-07 04:12:29,471 INFO L226 Difference]: Without dead ends: 1657 [2019-11-07 04:12:29,477 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:12:29,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2019-11-07 04:12:29,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1609. [2019-11-07 04:12:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1609 states. [2019-11-07 04:12:29,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2498 transitions. [2019-11-07 04:12:29,642 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2498 transitions. Word has length 109 [2019-11-07 04:12:29,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:29,643 INFO L462 AbstractCegarLoop]: Abstraction has 1609 states and 2498 transitions. [2019-11-07 04:12:29,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:12:29,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2498 transitions. [2019-11-07 04:12:29,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-07 04:12:29,648 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:29,649 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:29,649 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:29,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:29,649 INFO L82 PathProgramCache]: Analyzing trace with hash -694421880, now seen corresponding path program 1 times [2019-11-07 04:12:29,650 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:29,650 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789625871] [2019-11-07 04:12:29,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:12:29,944 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789625871] [2019-11-07 04:12:29,945 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:29,945 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 04:12:29,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563197689] [2019-11-07 04:12:29,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:12:29,946 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:29,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:12:29,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:12:29,948 INFO L87 Difference]: Start difference. First operand 1609 states and 2498 transitions. Second operand 8 states. [2019-11-07 04:12:33,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:33,079 INFO L93 Difference]: Finished difference Result 5863 states and 9213 transitions. [2019-11-07 04:12:33,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:12:33,080 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-11-07 04:12:33,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:33,119 INFO L225 Difference]: With dead ends: 5863 [2019-11-07 04:12:33,119 INFO L226 Difference]: Without dead ends: 4285 [2019-11-07 04:12:33,132 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:12:33,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4285 states. [2019-11-07 04:12:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4285 to 4269. [2019-11-07 04:12:33,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4269 states. [2019-11-07 04:12:33,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4269 states to 4269 states and 6557 transitions. [2019-11-07 04:12:33,491 INFO L78 Accepts]: Start accepts. Automaton has 4269 states and 6557 transitions. Word has length 107 [2019-11-07 04:12:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:33,492 INFO L462 AbstractCegarLoop]: Abstraction has 4269 states and 6557 transitions. [2019-11-07 04:12:33,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:12:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4269 states and 6557 transitions. [2019-11-07 04:12:33,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-07 04:12:33,504 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:33,507 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:12:33,508 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:33,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:33,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1786234194, now seen corresponding path program 1 times [2019-11-07 04:12:33,509 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:33,509 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232231168] [2019-11-07 04:12:33,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:12:33,878 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232231168] [2019-11-07 04:12:33,879 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539564931] [2019-11-07 04:12:33,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:34,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 3220 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:12:34,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:34,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:12:34,784 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:35,013 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-11-07 04:12:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:12:35,072 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:35,072 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 04:12:35,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047787653] [2019-11-07 04:12:35,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:12:35,074 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:35,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:12:35,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:12:35,075 INFO L87 Difference]: Start difference. First operand 4269 states and 6557 transitions. Second operand 3 states. [2019-11-07 04:12:35,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:35,441 INFO L93 Difference]: Finished difference Result 12077 states and 19230 transitions. [2019-11-07 04:12:35,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:12:35,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2019-11-07 04:12:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:35,539 INFO L225 Difference]: With dead ends: 12077 [2019-11-07 04:12:35,540 INFO L226 Difference]: Without dead ends: 7839 [2019-11-07 04:12:35,582 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:12:35,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7839 states. [2019-11-07 04:12:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7839 to 7529. [2019-11-07 04:12:36,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7529 states. [2019-11-07 04:12:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7529 states to 7529 states and 11714 transitions. [2019-11-07 04:12:36,076 INFO L78 Accepts]: Start accepts. Automaton has 7529 states and 11714 transitions. Word has length 111 [2019-11-07 04:12:36,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:36,078 INFO L462 AbstractCegarLoop]: Abstraction has 7529 states and 11714 transitions. [2019-11-07 04:12:36,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:12:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand 7529 states and 11714 transitions. [2019-11-07 04:12:36,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-07 04:12:36,083 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:36,083 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:12:36,292 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:36,293 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:36,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:36,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2130624422, now seen corresponding path program 1 times [2019-11-07 04:12:36,294 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:36,294 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45862553] [2019-11-07 04:12:36,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:12:36,662 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45862553] [2019-11-07 04:12:36,663 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293701317] [2019-11-07 04:12:36,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:37,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 3221 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:12:37,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:12:37,285 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:12:37,434 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:37,434 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 04:12:37,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388565374] [2019-11-07 04:12:37,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:12:37,437 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:37,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:12:37,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:12:37,437 INFO L87 Difference]: Start difference. First operand 7529 states and 11714 transitions. Second operand 3 states. [2019-11-07 04:12:37,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:37,934 INFO L93 Difference]: Finished difference Result 16635 states and 26341 transitions. [2019-11-07 04:12:37,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:12:37,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2019-11-07 04:12:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:38,261 INFO L225 Difference]: With dead ends: 16635 [2019-11-07 04:12:38,261 INFO L226 Difference]: Without dead ends: 9137 [2019-11-07 04:12:38,323 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:12:38,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9137 states. [2019-11-07 04:12:38,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9137 to 8923. [2019-11-07 04:12:38,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8923 states. [2019-11-07 04:12:38,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8923 states to 8923 states and 13865 transitions. [2019-11-07 04:12:38,811 INFO L78 Accepts]: Start accepts. Automaton has 8923 states and 13865 transitions. Word has length 112 [2019-11-07 04:12:38,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:38,813 INFO L462 AbstractCegarLoop]: Abstraction has 8923 states and 13865 transitions. [2019-11-07 04:12:38,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:12:38,814 INFO L276 IsEmpty]: Start isEmpty. Operand 8923 states and 13865 transitions. [2019-11-07 04:12:38,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:12:38,819 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:38,819 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:39,037 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:39,037 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:39,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:39,038 INFO L82 PathProgramCache]: Analyzing trace with hash 697797265, now seen corresponding path program 1 times [2019-11-07 04:12:39,038 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:39,038 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60015160] [2019-11-07 04:12:39,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 04:12:39,412 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60015160] [2019-11-07 04:12:39,412 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:39,412 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:12:39,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019313861] [2019-11-07 04:12:39,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:12:39,414 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:39,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:12:39,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:39,415 INFO L87 Difference]: Start difference. First operand 8923 states and 13865 transitions. Second operand 10 states. [2019-11-07 04:12:41,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:41,731 INFO L93 Difference]: Finished difference Result 19637 states and 30850 transitions. [2019-11-07 04:12:41,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 04:12:41,732 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 118 [2019-11-07 04:12:41,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:41,835 INFO L225 Difference]: With dead ends: 19637 [2019-11-07 04:12:41,836 INFO L226 Difference]: Without dead ends: 10745 [2019-11-07 04:12:41,906 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-07 04:12:41,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2019-11-07 04:12:42,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10703. [2019-11-07 04:12:42,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10703 states. [2019-11-07 04:12:42,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10703 states to 10703 states and 16620 transitions. [2019-11-07 04:12:42,518 INFO L78 Accepts]: Start accepts. Automaton has 10703 states and 16620 transitions. Word has length 118 [2019-11-07 04:12:42,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:42,519 INFO L462 AbstractCegarLoop]: Abstraction has 10703 states and 16620 transitions. [2019-11-07 04:12:42,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:12:42,519 INFO L276 IsEmpty]: Start isEmpty. Operand 10703 states and 16620 transitions. [2019-11-07 04:12:42,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:12:42,523 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:42,523 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:42,523 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:42,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:42,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1827642056, now seen corresponding path program 1 times [2019-11-07 04:12:42,524 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:42,524 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894868425] [2019-11-07 04:12:42,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 04:12:42,899 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894868425] [2019-11-07 04:12:42,899 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:42,899 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:12:42,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756511235] [2019-11-07 04:12:42,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:12:42,901 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:42,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:12:42,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:42,902 INFO L87 Difference]: Start difference. First operand 10703 states and 16620 transitions. Second operand 10 states. [2019-11-07 04:12:46,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:46,793 INFO L93 Difference]: Finished difference Result 34924 states and 57097 transitions. [2019-11-07 04:12:46,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 04:12:46,794 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2019-11-07 04:12:46,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:46,981 INFO L225 Difference]: With dead ends: 34924 [2019-11-07 04:12:46,981 INFO L226 Difference]: Without dead ends: 24252 [2019-11-07 04:12:47,041 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:12:47,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24252 states.