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_spec1_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:02,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:02,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:02,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:02,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:02,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:02,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:02,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:02,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:02,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:02,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:02,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:02,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:02,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:02,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:02,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:02,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:02,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:02,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:02,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:02,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:02,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:02,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:02,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:02,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:02,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:02,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:02,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:02,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:02,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:02,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:02,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:02,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:02,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:02,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:02,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:02,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:02,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:02,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:02,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:02,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:02,461 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 23:03:02,498 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:02,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:02,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:02,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:02,500 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:02,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:02,500 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:02,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:02,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:02,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:02,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:02,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:02,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:02,502 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:02,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:02,502 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:02,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:02,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:02,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:02,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:02,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:02,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:02,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:02,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:02,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:02,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:02,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:02,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:02,505 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 23:03:02,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:02,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:02,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:02,824 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:02,824 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:02,825 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product23.cil.c [2019-10-13 23:03:02,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89ec87206/33ac22915322465890d28c24cb973b03/FLAGbeb76c151 [2019-10-13 23:03:03,594 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:03,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product23.cil.c [2019-10-13 23:03:03,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89ec87206/33ac22915322465890d28c24cb973b03/FLAGbeb76c151 [2019-10-13 23:03:03,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89ec87206/33ac22915322465890d28c24cb973b03 [2019-10-13 23:03:03,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:03,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:03,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:03,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:03,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:03,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:03" (1/1) ... [2019-10-13 23:03:03,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9fb768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:03, skipping insertion in model container [2019-10-13 23:03:03,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:03" (1/1) ... [2019-10-13 23:03:03,772 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:03,857 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:04,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:04,674 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:04,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:04,848 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:04,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04 WrapperNode [2019-10-13 23:03:04,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:04,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:04,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:04,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:04,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (1/1) ... [2019-10-13 23:03:04,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (1/1) ... [2019-10-13 23:03:04,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (1/1) ... [2019-10-13 23:03:04,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (1/1) ... [2019-10-13 23:03:04,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (1/1) ... [2019-10-13 23:03:05,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (1/1) ... [2019-10-13 23:03:05,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (1/1) ... [2019-10-13 23:03:05,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:05,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:05,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:05,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:05,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (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 23:03:05,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:05,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:05,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:05,158 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:05,158 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:05,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:05,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:05,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:05,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:05,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:05,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:05,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:05,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:05,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:05,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:05,160 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:05,161 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:05,161 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:05,161 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:05,162 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:05,162 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:05,162 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:05,162 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:05,162 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:05,163 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:05,163 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:05,163 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:05,163 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:05,163 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:05,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:05,164 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:05,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:05,164 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:05,164 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:05,165 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:05,165 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:05,165 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:05,165 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:05,165 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:05,165 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:05,166 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:05,166 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:05,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:05,166 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:03:05,166 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:05,167 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:03:05,167 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:05,167 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:05,167 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:05,167 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:05,167 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:05,168 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:03:05,169 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:03:05,169 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:05,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:05,169 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:03:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:03:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:05,171 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:05,171 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:05,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:03:05,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:03:05,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:05,172 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:05,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:05,172 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:05,172 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:05,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:05,173 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:05,173 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:05,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:05,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:05,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:05,174 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:05,174 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:05,174 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:05,174 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:05,174 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:05,176 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:05,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:05,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:05,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:05,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:05,183 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:05,183 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:05,183 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:05,183 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:03:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:03:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:03:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:03:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:03:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:03:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:03:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:03:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:10,205 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:10,205 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:10,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:10 BoogieIcfgContainer [2019-10-13 23:03:10,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:10,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:10,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:10,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:10,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:03" (1/3) ... [2019-10-13 23:03:10,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339a646c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:10, skipping insertion in model container [2019-10-13 23:03:10,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (2/3) ... [2019-10-13 23:03:10,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339a646c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:10, skipping insertion in model container [2019-10-13 23:03:10,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:10" (3/3) ... [2019-10-13 23:03:10,215 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product23.cil.c [2019-10-13 23:03:10,226 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:10,236 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:10,247 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:10,279 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:10,279 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:10,280 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:10,280 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:10,280 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:10,280 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:10,280 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:10,280 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states. [2019-10-13 23:03:10,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 23:03:10,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:10,346 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 23:03:10,348 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:10,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:10,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1664173516, now seen corresponding path program 1 times [2019-10-13 23:03:10,364 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:10,364 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474140991] [2019-10-13 23:03:10,365 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:10,365 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:10,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:03:11,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474140991] [2019-10-13 23:03:11,169 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:11,169 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:03:11,169 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509425507] [2019-10-13 23:03:11,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:03:11,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:11,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:03:11,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:11,197 INFO L87 Difference]: Start difference. First operand 595 states. Second operand 2 states. [2019-10-13 23:03:11,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:11,305 INFO L93 Difference]: Finished difference Result 504 states and 744 transitions. [2019-10-13 23:03:11,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:03:11,307 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 135 [2019-10-13 23:03:11,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:11,334 INFO L225 Difference]: With dead ends: 504 [2019-10-13 23:03:11,334 INFO L226 Difference]: Without dead ends: 470 [2019-10-13 23:03:11,339 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 23:03:11,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-10-13 23:03:11,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2019-10-13 23:03:11,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2019-10-13 23:03:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 693 transitions. [2019-10-13 23:03:11,440 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 693 transitions. Word has length 135 [2019-10-13 23:03:11,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:11,443 INFO L462 AbstractCegarLoop]: Abstraction has 470 states and 693 transitions. [2019-10-13 23:03:11,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:03:11,443 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 693 transitions. [2019-10-13 23:03:11,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 23:03:11,452 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:11,452 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 23:03:11,452 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:11,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:11,453 INFO L82 PathProgramCache]: Analyzing trace with hash -437417159, now seen corresponding path program 1 times [2019-10-13 23:03:11,453 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:11,453 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619745002] [2019-10-13 23:03:11,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:11,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:11,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:03:11,863 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619745002] [2019-10-13 23:03:11,863 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:11,864 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:11,864 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451500701] [2019-10-13 23:03:11,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:11,866 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:11,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:11,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:11,867 INFO L87 Difference]: Start difference. First operand 470 states and 693 transitions. Second operand 7 states. [2019-10-13 23:03:15,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:15,730 INFO L93 Difference]: Finished difference Result 1315 states and 1990 transitions. [2019-10-13 23:03:15,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:03:15,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2019-10-13 23:03:15,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:15,744 INFO L225 Difference]: With dead ends: 1315 [2019-10-13 23:03:15,744 INFO L226 Difference]: Without dead ends: 898 [2019-10-13 23:03:15,752 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 23:03:15,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2019-10-13 23:03:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 873. [2019-10-13 23:03:15,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2019-10-13 23:03:15,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1316 transitions. [2019-10-13 23:03:15,861 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1316 transitions. Word has length 136 [2019-10-13 23:03:15,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:15,864 INFO L462 AbstractCegarLoop]: Abstraction has 873 states and 1316 transitions. [2019-10-13 23:03:15,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:15,864 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1316 transitions. [2019-10-13 23:03:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 23:03:15,877 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:15,877 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:03:15,878 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:15,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:15,878 INFO L82 PathProgramCache]: Analyzing trace with hash 490961431, now seen corresponding path program 1 times [2019-10-13 23:03:15,879 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:15,879 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822211161] [2019-10-13 23:03:15,880 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:15,880 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:15,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:03:16,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822211161] [2019-10-13 23:03:16,177 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:16,177 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:03:16,177 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884000862] [2019-10-13 23:03:16,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:03:16,178 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:16,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:03:16,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:03:16,179 INFO L87 Difference]: Start difference. First operand 873 states and 1316 transitions. Second operand 6 states. [2019-10-13 23:03:16,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:16,934 INFO L93 Difference]: Finished difference Result 912 states and 1372 transitions. [2019-10-13 23:03:16,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:16,935 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-10-13 23:03:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:16,943 INFO L225 Difference]: With dead ends: 912 [2019-10-13 23:03:16,944 INFO L226 Difference]: Without dead ends: 895 [2019-10-13 23:03:16,945 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2019-10-13 23:03:16,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 877. [2019-10-13 23:03:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2019-10-13 23:03:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1320 transitions. [2019-10-13 23:03:17,004 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1320 transitions. Word has length 140 [2019-10-13 23:03:17,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:17,005 INFO L462 AbstractCegarLoop]: Abstraction has 877 states and 1320 transitions. [2019-10-13 23:03:17,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:03:17,006 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1320 transitions. [2019-10-13 23:03:17,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 23:03:17,010 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:17,010 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2019-10-13 23:03:17,011 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:17,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:17,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1144105526, now seen corresponding path program 1 times [2019-10-13 23:03:17,011 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:17,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368529380] [2019-10-13 23:03:17,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:17,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:17,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:03:17,258 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368529380] [2019-10-13 23:03:17,259 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:17,259 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:17,259 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779068919] [2019-10-13 23:03:17,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:17,260 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:17,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:17,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:17,261 INFO L87 Difference]: Start difference. First operand 877 states and 1320 transitions. Second operand 8 states. [2019-10-13 23:03:17,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:17,340 INFO L93 Difference]: Finished difference Result 898 states and 1346 transitions. [2019-10-13 23:03:17,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:03:17,340 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2019-10-13 23:03:17,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:17,349 INFO L225 Difference]: With dead ends: 898 [2019-10-13 23:03:17,349 INFO L226 Difference]: Without dead ends: 881 [2019-10-13 23:03:17,351 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:17,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2019-10-13 23:03:17,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 877. [2019-10-13 23:03:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2019-10-13 23:03:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1318 transitions. [2019-10-13 23:03:17,399 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1318 transitions. Word has length 145 [2019-10-13 23:03:17,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:17,400 INFO L462 AbstractCegarLoop]: Abstraction has 877 states and 1318 transitions. [2019-10-13 23:03:17,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:17,401 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1318 transitions. [2019-10-13 23:03:17,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 23:03:17,405 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:17,405 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:17,406 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:17,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:17,406 INFO L82 PathProgramCache]: Analyzing trace with hash -216213488, now seen corresponding path program 1 times [2019-10-13 23:03:17,406 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:17,407 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093557192] [2019-10-13 23:03:17,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:17,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:17,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:18,687 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093557192] [2019-10-13 23:03:18,688 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648943715] [2019-10-13 23:03:18,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:03:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:19,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 3298 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 23:03:19,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:03:19,410 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 23:03:19,560 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:03:20,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 23:03:20,260 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:03:20,260 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [32] total 37 [2019-10-13 23:03:20,260 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869387788] [2019-10-13 23:03:20,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:20,262 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:20,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:20,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1232, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 23:03:20,263 INFO L87 Difference]: Start difference. First operand 877 states and 1318 transitions. Second operand 7 states. [2019-10-13 23:03:20,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:20,371 INFO L93 Difference]: Finished difference Result 920 states and 1372 transitions. [2019-10-13 23:03:20,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:20,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2019-10-13 23:03:20,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:20,380 INFO L225 Difference]: With dead ends: 920 [2019-10-13 23:03:20,380 INFO L226 Difference]: Without dead ends: 903 [2019-10-13 23:03:20,382 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=104, Invalid=1302, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 23:03:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2019-10-13 23:03:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 889. [2019-10-13 23:03:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2019-10-13 23:03:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1330 transitions. [2019-10-13 23:03:20,443 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1330 transitions. Word has length 160 [2019-10-13 23:03:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:20,444 INFO L462 AbstractCegarLoop]: Abstraction has 889 states and 1330 transitions. [2019-10-13 23:03:20,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1330 transitions. [2019-10-13 23:03:20,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 23:03:20,452 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:20,453 INFO L380 BasicCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:20,666 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:03:20,667 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:20,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:20,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1336993529, now seen corresponding path program 1 times [2019-10-13 23:03:20,667 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:20,668 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468962158] [2019-10-13 23:03:20,668 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,668 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 23:03:21,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468962158] [2019-10-13 23:03:21,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507097253] [2019-10-13 23:03:21,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:03:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:21,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 41 conjunts are in the unsatisfiable core [2019-10-13 23:03:21,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:03:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 23:03:22,593 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:03:23,083 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-13 23:03:23,445 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2019-10-13 23:03:24,236 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-13 23:03:24,674 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2019-10-13 23:03:24,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,975 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,976 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,980 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:25,469 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-13 23:03:26,285 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-10-13 23:03:26,485 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-13 23:03:26,939 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2019-10-13 23:03:27,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,072 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,072 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,073 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,074 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,074 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,075 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,077 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,078 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,078 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,080 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,080 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,523 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-13 23:03:27,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:27,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:28,311 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-13 23:03:28,900 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-13 23:03:29,176 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-10-13 23:03:29,470 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-13 23:03:30,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,144 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,146 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,152 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,153 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,155 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:30,603 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-13 23:03:31,041 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,570 WARN L191 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-13 23:03:31,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-13 23:03:31,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,806 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,808 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,808 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-13 23:03:31,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-13 23:03:31,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:31,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,163 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-10-13 23:03:32,444 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-13 23:03:32,502 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-13 23:03:32,502 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,503 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,503 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,503 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,504 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,504 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,506 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,506 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,507 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,507 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,508 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,584 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 23:03:32,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1563152246] [2019-10-13 23:03:32,741 INFO L162 IcfgInterpreter]: Started Sifa with 152 locations of interest [2019-10-13 23:03:32,741 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:03:32,748 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:03:32,756 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:03:32,756 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs