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_spec2_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:35,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:35,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:35,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:35,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:35,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:35,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:35,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:35,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:35,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:35,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:35,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:35,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:35,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:35,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:35,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:35,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:35,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:35,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:35,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:35,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:35,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:35,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:35,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:35,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:35,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:35,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:35,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:35,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:35,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:35,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:35,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:35,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:35,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:35,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:35,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:35,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:35,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:35,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:35,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:35,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:35,767 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 23:03:35,791 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:35,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:35,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:35,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:35,793 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:35,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:35,794 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:35,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:35,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:35,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:35,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:35,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:35,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:35,795 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:35,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:35,796 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:35,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:35,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:35,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:35,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:35,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:35,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:35,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:35,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:35,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:35,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:35,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:35,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:35,798 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 [2019-10-13 23:03:36,066 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:36,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:36,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:36,090 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:36,090 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:36,091 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product03.cil.c [2019-10-13 23:03:36,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4e3eece2/6b22112aacba4678882e4ecd68aa7bd8/FLAG0b26e9df1 [2019-10-13 23:03:36,714 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:36,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product03.cil.c [2019-10-13 23:03:36,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4e3eece2/6b22112aacba4678882e4ecd68aa7bd8/FLAG0b26e9df1 [2019-10-13 23:03:36,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4e3eece2/6b22112aacba4678882e4ecd68aa7bd8 [2019-10-13 23:03:37,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:37,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:37,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:37,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:37,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:37,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:37" (1/1) ... [2019-10-13 23:03:37,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67af7f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:37, skipping insertion in model container [2019-10-13 23:03:37,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:37" (1/1) ... [2019-10-13 23:03:37,027 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:37,103 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:37,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:37,820 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:37,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:37,999 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:38,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:37 WrapperNode [2019-10-13 23:03:38,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:38,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:38,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:38,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:38,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:37" (1/1) ... [2019-10-13 23:03:38,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:37" (1/1) ... [2019-10-13 23:03:38,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:37" (1/1) ... [2019-10-13 23:03:38,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:37" (1/1) ... [2019-10-13 23:03:38,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:37" (1/1) ... [2019-10-13 23:03:38,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:37" (1/1) ... [2019-10-13 23:03:38,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:37" (1/1) ... [2019-10-13 23:03:38,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:38,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:38,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:38,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:38,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:37" (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 23:03:38,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:38,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:38,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:38,249 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:38,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:38,250 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:38,251 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:38,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:38,251 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:38,252 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:38,252 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:38,253 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:38,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:38,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:38,254 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:38,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:38,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:38,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:38,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:38,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:38,265 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:38,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:38,265 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:38,265 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:38,265 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:38,266 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:38,266 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:38,266 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:38,266 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:38,266 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__base [2019-10-13 23:03:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:38,269 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:38,269 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-10-13 23:03:38,269 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:38,269 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:38,270 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:38,270 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:38,270 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:38,270 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:03:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:03:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:03:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:03:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:03:38,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:03:38,273 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:38,273 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:38,287 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:38,287 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:03:38,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:03:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:03:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:03:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:03:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__base [2019-10-13 23:03:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-10-13 23:03:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:03:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:42,980 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:42,980 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:42,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:42 BoogieIcfgContainer [2019-10-13 23:03:42,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:42,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:42,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:42,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:42,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:37" (1/3) ... [2019-10-13 23:03:42,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55173b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:42, skipping insertion in model container [2019-10-13 23:03:42,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:37" (2/3) ... [2019-10-13 23:03:42,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55173b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:42, skipping insertion in model container [2019-10-13 23:03:42,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:42" (3/3) ... [2019-10-13 23:03:42,990 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product03.cil.c [2019-10-13 23:03:43,000 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:43,009 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:43,020 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:43,049 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:43,050 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:43,050 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:43,050 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:43,050 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:43,050 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:43,050 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:43,050 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:43,082 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states. [2019-10-13 23:03:43,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:03:43,104 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:43,105 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:43,107 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:43,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:43,114 INFO L82 PathProgramCache]: Analyzing trace with hash 701582024, now seen corresponding path program 1 times [2019-10-13 23:03:43,123 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:43,124 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753204504] [2019-10-13 23:03:43,124 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:43,124 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:43,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:43,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753204504] [2019-10-13 23:03:43,726 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:43,726 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:03:43,727 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51996971] [2019-10-13 23:03:43,731 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:03:43,732 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:43,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:03:43,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:43,749 INFO L87 Difference]: Start difference. First operand 557 states. Second operand 2 states. [2019-10-13 23:03:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:43,813 INFO L93 Difference]: Finished difference Result 460 states and 690 transitions. [2019-10-13 23:03:43,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:03:43,814 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-13 23:03:43,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:43,843 INFO L225 Difference]: With dead ends: 460 [2019-10-13 23:03:43,844 INFO L226 Difference]: Without dead ends: 426 [2019-10-13 23:03:43,848 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:43,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2019-10-13 23:03:43,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2019-10-13 23:03:43,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-10-13 23:03:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 639 transitions. [2019-10-13 23:03:43,957 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 639 transitions. Word has length 112 [2019-10-13 23:03:43,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:43,960 INFO L462 AbstractCegarLoop]: Abstraction has 426 states and 639 transitions. [2019-10-13 23:03:43,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:03:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 639 transitions. [2019-10-13 23:03:43,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 23:03:43,971 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:43,971 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:43,972 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:43,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:43,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1004921316, now seen corresponding path program 1 times [2019-10-13 23:03:43,972 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:43,974 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76980220] [2019-10-13 23:03:43,974 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:43,975 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:43,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:44,414 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76980220] [2019-10-13 23:03:44,414 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:44,414 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:44,414 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846221470] [2019-10-13 23:03:44,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:44,418 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:44,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:44,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:44,419 INFO L87 Difference]: Start difference. First operand 426 states and 639 transitions. Second operand 7 states. [2019-10-13 23:03:48,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:48,169 INFO L93 Difference]: Finished difference Result 1205 states and 1854 transitions. [2019-10-13 23:03:48,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:03:48,170 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 23:03:48,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:48,179 INFO L225 Difference]: With dead ends: 1205 [2019-10-13 23:03:48,179 INFO L226 Difference]: Without dead ends: 821 [2019-10-13 23:03:48,185 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:03:48,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2019-10-13 23:03:48,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 796. [2019-10-13 23:03:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2019-10-13 23:03:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1221 transitions. [2019-10-13 23:03:48,260 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1221 transitions. Word has length 113 [2019-10-13 23:03:48,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:48,261 INFO L462 AbstractCegarLoop]: Abstraction has 796 states and 1221 transitions. [2019-10-13 23:03:48,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:48,261 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1221 transitions. [2019-10-13 23:03:48,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:03:48,265 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:48,266 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:48,266 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:48,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:48,267 INFO L82 PathProgramCache]: Analyzing trace with hash 262416038, now seen corresponding path program 1 times [2019-10-13 23:03:48,267 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:48,267 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010652012] [2019-10-13 23:03:48,267 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:48,267 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:48,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:48,513 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010652012] [2019-10-13 23:03:48,513 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:48,514 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:03:48,514 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029849693] [2019-10-13 23:03:48,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:03:48,517 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:48,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:03:48,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:03:48,517 INFO L87 Difference]: Start difference. First operand 796 states and 1221 transitions. Second operand 4 states. [2019-10-13 23:03:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:50,212 INFO L93 Difference]: Finished difference Result 2382 states and 3748 transitions. [2019-10-13 23:03:50,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:50,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-13 23:03:50,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:50,230 INFO L225 Difference]: With dead ends: 2382 [2019-10-13 23:03:50,230 INFO L226 Difference]: Without dead ends: 1628 [2019-10-13 23:03:50,235 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 23:03:50,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2019-10-13 23:03:50,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1530. [2019-10-13 23:03:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1530 states. [2019-10-13 23:03:50,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2393 transitions. [2019-10-13 23:03:50,350 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2393 transitions. Word has length 117 [2019-10-13 23:03:50,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:50,351 INFO L462 AbstractCegarLoop]: Abstraction has 1530 states and 2393 transitions. [2019-10-13 23:03:50,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:03:50,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2393 transitions. [2019-10-13 23:03:50,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:03:50,355 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:50,355 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:50,355 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:50,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:50,356 INFO L82 PathProgramCache]: Analyzing trace with hash -456335281, now seen corresponding path program 1 times [2019-10-13 23:03:50,356 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:50,356 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112869270] [2019-10-13 23:03:50,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:50,357 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:50,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:50,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:50,523 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112869270] [2019-10-13 23:03:50,523 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:50,524 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:03:50,524 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338907136] [2019-10-13 23:03:50,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:03:50,525 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:50,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:03:50,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:03:50,525 INFO L87 Difference]: Start difference. First operand 1530 states and 2393 transitions. Second operand 4 states. [2019-10-13 23:03:52,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:52,549 INFO L93 Difference]: Finished difference Result 4531 states and 7246 transitions. [2019-10-13 23:03:52,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:52,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 23:03:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:52,579 INFO L225 Difference]: With dead ends: 4531 [2019-10-13 23:03:52,579 INFO L226 Difference]: Without dead ends: 3044 [2019-10-13 23:03:52,588 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 23:03:52,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2019-10-13 23:03:52,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 2923. [2019-10-13 23:03:52,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2923 states. [2019-10-13 23:03:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 4638 transitions. [2019-10-13 23:03:52,783 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 4638 transitions. Word has length 118 [2019-10-13 23:03:52,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:52,783 INFO L462 AbstractCegarLoop]: Abstraction has 2923 states and 4638 transitions. [2019-10-13 23:03:52,784 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:03:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 4638 transitions. [2019-10-13 23:03:52,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:03:52,787 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:52,787 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:52,788 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:52,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:52,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1262785784, now seen corresponding path program 1 times [2019-10-13 23:03:52,789 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:52,789 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803240090] [2019-10-13 23:03:52,789 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:52,789 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:52,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:53,036 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803240090] [2019-10-13 23:03:53,037 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:53,037 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:03:53,037 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703814493] [2019-10-13 23:03:53,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:03:53,038 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:53,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:03:53,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:03:53,040 INFO L87 Difference]: Start difference. First operand 2923 states and 4638 transitions. Second operand 4 states. [2019-10-13 23:03:54,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:54,954 INFO L93 Difference]: Finished difference Result 8762 states and 14318 transitions. [2019-10-13 23:03:54,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:54,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-13 23:03:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:55,018 INFO L225 Difference]: With dead ends: 8762 [2019-10-13 23:03:55,019 INFO L226 Difference]: Without dead ends: 5884 [2019-10-13 23:03:55,042 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 23:03:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2019-10-13 23:03:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5718. [2019-10-13 23:03:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5718 states. [2019-10-13 23:03:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 9244 transitions. [2019-10-13 23:03:55,468 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 9244 transitions. Word has length 119 [2019-10-13 23:03:55,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:55,470 INFO L462 AbstractCegarLoop]: Abstraction has 5718 states and 9244 transitions. [2019-10-13 23:03:55,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:03:55,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 9244 transitions. [2019-10-13 23:03:55,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:03:55,474 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:55,478 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:55,478 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:55,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:55,478 INFO L82 PathProgramCache]: Analyzing trace with hash -492943695, now seen corresponding path program 1 times [2019-10-13 23:03:55,479 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:55,479 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501354635] [2019-10-13 23:03:55,479 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:55,479 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:55,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:55,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501354635] [2019-10-13 23:03:55,681 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:55,681 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:03:55,681 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105745928] [2019-10-13 23:03:55,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:03:55,682 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:55,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:03:55,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:03:55,682 INFO L87 Difference]: Start difference. First operand 5718 states and 9244 transitions. Second operand 4 states. [2019-10-13 23:03:57,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:57,685 INFO L93 Difference]: Finished difference Result 17249 states and 29193 transitions. [2019-10-13 23:03:57,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:57,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-13 23:03:57,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:57,807 INFO L225 Difference]: With dead ends: 17249 [2019-10-13 23:03:57,807 INFO L226 Difference]: Without dead ends: 11580 [2019-10-13 23:03:57,844 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 23:03:57,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11580 states. [2019-10-13 23:03:59,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11580 to 11325. [2019-10-13 23:03:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11325 states. [2019-10-13 23:03:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11325 states to 11325 states and 18866 transitions. [2019-10-13 23:03:59,310 INFO L78 Accepts]: Start accepts. Automaton has 11325 states and 18866 transitions. Word has length 120 [2019-10-13 23:03:59,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:59,311 INFO L462 AbstractCegarLoop]: Abstraction has 11325 states and 18866 transitions. [2019-10-13 23:03:59,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:03:59,311 INFO L276 IsEmpty]: Start isEmpty. Operand 11325 states and 18866 transitions. [2019-10-13 23:03:59,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:03:59,314 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:59,314 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:59,315 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:59,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:59,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1897328490, now seen corresponding path program 1 times [2019-10-13 23:03:59,315 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:59,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537507832] [2019-10-13 23:03:59,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:59,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:59,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:59,472 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537507832] [2019-10-13 23:03:59,472 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:59,472 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:03:59,473 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206791405] [2019-10-13 23:03:59,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:03:59,473 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:59,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:03:59,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:03:59,474 INFO L87 Difference]: Start difference. First operand 11325 states and 18866 transitions. Second operand 4 states. [2019-10-13 23:04:01,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:01,870 INFO L93 Difference]: Finished difference Result 34300 states and 61585 transitions. [2019-10-13 23:04:01,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:01,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-13 23:04:01,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:02,039 INFO L225 Difference]: With dead ends: 34300 [2019-10-13 23:04:02,039 INFO L226 Difference]: Without dead ends: 23020 [2019-10-13 23:04:02,108 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 23:04:02,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23020 states. [2019-10-13 23:04:03,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23020 to 22438. [2019-10-13 23:04:03,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22438 states. [2019-10-13 23:04:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22438 states to 22438 states and 39013 transitions. [2019-10-13 23:04:03,741 INFO L78 Accepts]: Start accepts. Automaton has 22438 states and 39013 transitions. Word has length 121 [2019-10-13 23:04:03,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:03,743 INFO L462 AbstractCegarLoop]: Abstraction has 22438 states and 39013 transitions. [2019-10-13 23:04:03,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 22438 states and 39013 transitions. [2019-10-13 23:04:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 23:04:03,752 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:03,753 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:03,753 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:03,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:03,753 INFO L82 PathProgramCache]: Analyzing trace with hash 778299142, now seen corresponding path program 1 times [2019-10-13 23:04:03,754 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:03,754 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34411853] [2019-10-13 23:04:03,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:03,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:03,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 23:04:03,966 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34411853] [2019-10-13 23:04:03,966 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:03,966 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:04:03,966 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318953191] [2019-10-13 23:04:03,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:04:03,967 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:03,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:04:03,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:03,968 INFO L87 Difference]: Start difference. First operand 22438 states and 39013 transitions. Second operand 5 states. [2019-10-13 23:04:04,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:04,806 INFO L93 Difference]: Finished difference Result 45255 states and 81717 transitions. [2019-10-13 23:04:04,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:04,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2019-10-13 23:04:04,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:04,931 INFO L225 Difference]: With dead ends: 45255 [2019-10-13 23:04:04,932 INFO L226 Difference]: Without dead ends: 22860 [2019-10-13 23:04:04,997 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22860 states. [2019-10-13 23:04:07,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22860 to 22710. [2019-10-13 23:04:07,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22710 states. [2019-10-13 23:04:07,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22710 states to 22710 states and 39528 transitions. [2019-10-13 23:04:07,227 INFO L78 Accepts]: Start accepts. Automaton has 22710 states and 39528 transitions. Word has length 174 [2019-10-13 23:04:07,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:07,228 INFO L462 AbstractCegarLoop]: Abstraction has 22710 states and 39528 transitions. [2019-10-13 23:04:07,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:04:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 22710 states and 39528 transitions. [2019-10-13 23:04:07,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 23:04:07,236 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:07,236 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:07,236 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:07,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:07,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1959532391, now seen corresponding path program 1 times [2019-10-13 23:04:07,237 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:07,237 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78626542] [2019-10-13 23:04:07,237 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:07,237 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:07,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 23:04:07,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78626542] [2019-10-13 23:04:07,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225700744] [2019-10-13 23:04:07,432 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