/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:12:30,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:12:30,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:12:30,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:12:30,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:12:30,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:12:30,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:12:30,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:12:30,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:12:30,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:12:30,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:12:30,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:12:30,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:12:30,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:12:30,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:12:30,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:12:30,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:12:30,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:12:30,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:12:30,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:12:30,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:12:30,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:12:30,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:12:30,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:12:30,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:12:30,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:12:30,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:12:30,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:12:30,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:12:30,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:12:30,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:12:30,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:12:30,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:12:30,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:12:30,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:12:30,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:12:30,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:12:30,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:12:30,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:12:30,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:12:30,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:12:30,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:12:30,146 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:12:30,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:12:30,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:12:30,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:12:30,148 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:12:30,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:12:30,149 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:12:30,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:12:30,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:12:30,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:12:30,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:12:30,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:12:30,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:12:30,150 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:12:30,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:12:30,151 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:12:30,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:12:30,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:12:30,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:12:30,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:12:30,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:12:30,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:12:30,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:12:30,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:12:30,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:12:30,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:12:30,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:12:30,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:12:30,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:12:30,458 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:12:30,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:12:30,475 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:12:30,477 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:12:30,477 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:12:30,478 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product29.cil.c [2019-11-07 04:12:30,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/062606866/b0085e3db312416c96aa291f6fa01cac/FLAG6d915b2aa [2019-11-07 04:12:31,173 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:12:31,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product29.cil.c [2019-11-07 04:12:31,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/062606866/b0085e3db312416c96aa291f6fa01cac/FLAG6d915b2aa [2019-11-07 04:12:31,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/062606866/b0085e3db312416c96aa291f6fa01cac [2019-11-07 04:12:31,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:12:31,437 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:12:31,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:12:31,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:12:31,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:12:31,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:12:31" (1/1) ... [2019-11-07 04:12:31,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22019d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:31, skipping insertion in model container [2019-11-07 04:12:31,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:12:31" (1/1) ... [2019-11-07 04:12:31,483 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:12:31,570 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:12:32,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:12:32,285 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:12:32,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:12:32,559 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:12:32,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:32 WrapperNode [2019-11-07 04:12:32,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:12:32,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:12:32,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:12:32,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:12:32,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:32" (1/1) ... [2019-11-07 04:12:32,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:32" (1/1) ... [2019-11-07 04:12:32,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:32" (1/1) ... [2019-11-07 04:12:32,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:32" (1/1) ... [2019-11-07 04:12:32,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:32" (1/1) ... [2019-11-07 04:12:32,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:32" (1/1) ... [2019-11-07 04:12:32,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:32" (1/1) ... [2019-11-07 04:12:32,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:12:32,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:12:32,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:12:32,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:12:32,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:12:32,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:12:32,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:12:32,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:12:32,865 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:12:32,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:12:32,866 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:12:32,867 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:12:32,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:12:32,868 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:12:32,868 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:12:32,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:12:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:12:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:12:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:12:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:12:32,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:12:32,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:12:32,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:12:32,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:12:32,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:12:32,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:12:32,874 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:12:32,875 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:12:32,875 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:12:32,875 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:12:32,875 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:12:32,876 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:12:32,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:12:32,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:12:32,876 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:12:32,876 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:12:32,876 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:12:32,877 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:12:32,877 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:12:32,877 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:12:32,878 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:12:32,878 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:12:32,878 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:12:32,878 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:12:32,878 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:12:32,879 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:12:32,879 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:12:32,879 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:12:32,879 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:12:32,879 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:12:32,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:12:32,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:12:32,880 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:12:32,880 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:12:32,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:12:32,881 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:12:32,881 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:12:32,881 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:12:32,881 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 04:12:32,881 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:12:32,881 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:12:32,882 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:12:32,882 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:12:32,882 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:12:32,883 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:12:32,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:12:32,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:12:32,884 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:12:32,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:12:32,884 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:12:32,884 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:12:32,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:12:32,885 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:12:32,885 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:12:32,885 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:12:32,885 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:12:32,886 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:12:32,886 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:12:32,887 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:12:32,887 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:12:32,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:12:32,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:12:32,888 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:12:32,889 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:12:32,889 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:12:32,890 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:12:32,890 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:12:32,890 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:12:32,890 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:12:32,891 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:12:32,891 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:12:32,891 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:12:32,892 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:12:32,892 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:12:32,892 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:12:32,892 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:12:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:12:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:12:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:12:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:12:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:12:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:12:32,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:12:32,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:12:32,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:12:32,894 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:12:32,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:12:32,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:12:32,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:12:32,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:12:32,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:12:32,895 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:12:32,895 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:12:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:12:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:12:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:12:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:12:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:12:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:12:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:12:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:12:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:12:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:12:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:12:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:12:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:12:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:12:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:12:32,900 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:12:32,900 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:12:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:12:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:12:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:12:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:12:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:12:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:12:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:12:32,903 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:12:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:12:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:12:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:12:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:12:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:12:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:12:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:12:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:12:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:12:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:12:32,910 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:12:32,917 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:12:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:12:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:12:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:12:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:12:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 04:12:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:12:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:12:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:12:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:12:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:12:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:12:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:12:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:12:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:12:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:12:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:12:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:12:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:12:32,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:12:32,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:12:37,834 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:12:37,835 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:12:37,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:12:37 BoogieIcfgContainer [2019-11-07 04:12:37,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:12:37,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:12:37,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:12:37,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:12:37,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:12:31" (1/3) ... [2019-11-07 04:12:37,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40201af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:12:37, skipping insertion in model container [2019-11-07 04:12:37,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:32" (2/3) ... [2019-11-07 04:12:37,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40201af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:12:37, skipping insertion in model container [2019-11-07 04:12:37,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:12:37" (3/3) ... [2019-11-07 04:12:37,845 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product29.cil.c [2019-11-07 04:12:37,853 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:12:37,864 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:12:37,875 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:12:37,906 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:12:37,906 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:12:37,906 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:12:37,906 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:12:37,906 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:12:37,907 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:12:37,907 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:12:37,907 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:12:37,940 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states. [2019-11-07 04:12:37,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-07 04:12:37,961 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:37,962 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:37,964 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:37,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:37,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1689807222, now seen corresponding path program 1 times [2019-11-07 04:12:37,978 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:37,979 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354945423] [2019-11-07 04:12:37,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 04:12:38,753 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354945423] [2019-11-07 04:12:38,754 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693529055] [2019-11-07 04:12:38,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:39,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 3001 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:12:39,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:12:39,499 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 04:12:39,651 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:39,651 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-11-07 04:12:39,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751445784] [2019-11-07 04:12:39,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:12:39,659 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:39,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:12:39,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:12:39,677 INFO L87 Difference]: Start difference. First operand 598 states. Second operand 3 states. [2019-11-07 04:12:39,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:39,890 INFO L93 Difference]: Finished difference Result 1316 states and 2001 transitions. [2019-11-07 04:12:39,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:12:39,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2019-11-07 04:12:39,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:39,920 INFO L225 Difference]: With dead ends: 1316 [2019-11-07 04:12:39,920 INFO L226 Difference]: Without dead ends: 850 [2019-11-07 04:12:39,930 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:12:39,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2019-11-07 04:12:40,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 837. [2019-11-07 04:12:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2019-11-07 04:12:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1256 transitions. [2019-11-07 04:12:40,102 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1256 transitions. Word has length 112 [2019-11-07 04:12:40,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:40,103 INFO L462 AbstractCegarLoop]: Abstraction has 837 states and 1256 transitions. [2019-11-07 04:12:40,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:12:40,104 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1256 transitions. [2019-11-07 04:12:40,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-07 04:12:40,114 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:40,114 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:12:40,324 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:40,325 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:40,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:40,326 INFO L82 PathProgramCache]: Analyzing trace with hash 343984818, now seen corresponding path program 1 times [2019-11-07 04:12:40,326 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:40,327 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567982017] [2019-11-07 04:12:40,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:12:40,694 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567982017] [2019-11-07 04:12:40,694 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700308183] [2019-11-07 04:12:40,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:41,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 3013 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 04:12:41,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 04:12:41,300 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:12:41,496 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:41,496 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [7] total 10 [2019-11-07 04:12:41,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960479525] [2019-11-07 04:12:41,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:12:41,498 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:41,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:12:41,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:41,499 INFO L87 Difference]: Start difference. First operand 837 states and 1256 transitions. Second operand 5 states. [2019-11-07 04:12:43,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:43,277 INFO L93 Difference]: Finished difference Result 3196 states and 4897 transitions. [2019-11-07 04:12:43,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:12:43,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2019-11-07 04:12:43,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:43,301 INFO L225 Difference]: With dead ends: 3196 [2019-11-07 04:12:43,301 INFO L226 Difference]: Without dead ends: 2390 [2019-11-07 04:12:43,310 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:43,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2019-11-07 04:12:43,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2340. [2019-11-07 04:12:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2340 states. [2019-11-07 04:12:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 3483 transitions. [2019-11-07 04:12:43,480 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 3483 transitions. Word has length 113 [2019-11-07 04:12:43,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:43,481 INFO L462 AbstractCegarLoop]: Abstraction has 2340 states and 3483 transitions. [2019-11-07 04:12:43,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:12:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 3483 transitions. [2019-11-07 04:12:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:12:43,487 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:43,487 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:12:43,695 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:43,695 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:43,696 INFO L82 PathProgramCache]: Analyzing trace with hash -483217119, now seen corresponding path program 1 times [2019-11-07 04:12:43,696 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:43,696 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037003960] [2019-11-07 04:12:43,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:12:44,176 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037003960] [2019-11-07 04:12:44,176 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271230497] [2019-11-07 04:12:44,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:44,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 3029 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 04:12:44,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 04:12:44,916 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:45,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 04:12:45,077 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:12:45,107 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 04:12:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:12:45,290 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:45,290 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-11-07 04:12:45,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523947278] [2019-11-07 04:12:45,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 04:12:45,291 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:45,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 04:12:45,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-11-07 04:12:45,292 INFO L87 Difference]: Start difference. First operand 2340 states and 3483 transitions. Second operand 11 states. [2019-11-07 04:12:47,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:47,133 INFO L93 Difference]: Finished difference Result 4405 states and 6612 transitions. [2019-11-07 04:12:47,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:12:47,134 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 118 [2019-11-07 04:12:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:47,161 INFO L225 Difference]: With dead ends: 4405 [2019-11-07 04:12:47,161 INFO L226 Difference]: Without dead ends: 2652 [2019-11-07 04:12:47,173 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 226 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:12:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2019-11-07 04:12:47,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2524. [2019-11-07 04:12:47,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2524 states. [2019-11-07 04:12:47,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3735 transitions. [2019-11-07 04:12:47,372 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3735 transitions. Word has length 118 [2019-11-07 04:12:47,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:47,373 INFO L462 AbstractCegarLoop]: Abstraction has 2524 states and 3735 transitions. [2019-11-07 04:12:47,373 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 04:12:47,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3735 transitions. [2019-11-07 04:12:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:12:47,379 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:47,379 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:12:47,590 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:47,591 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:47,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:47,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1170444739, now seen corresponding path program 1 times [2019-11-07 04:12:47,591 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:47,592 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056402995] [2019-11-07 04:12:47,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:47,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:12:47,775 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056402995] [2019-11-07 04:12:47,775 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725573140] [2019-11-07 04:12:47,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:48,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 3018 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-07 04:12:48,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 04:12:48,480 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:48,587 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:12:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:12:48,723 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:48,723 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 13 [2019-11-07 04:12:48,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254315654] [2019-11-07 04:12:48,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:12:48,726 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:48,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:12:48,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:12:48,727 INFO L87 Difference]: Start difference. First operand 2524 states and 3735 transitions. Second operand 8 states. [2019-11-07 04:12:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:49,016 INFO L93 Difference]: Finished difference Result 4981 states and 7473 transitions. [2019-11-07 04:12:49,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:12:49,017 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2019-11-07 04:12:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:49,039 INFO L225 Difference]: With dead ends: 4981 [2019-11-07 04:12:49,039 INFO L226 Difference]: Without dead ends: 3012 [2019-11-07 04:12:49,055 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 229 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2019-11-07 04:12:49,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2019-11-07 04:12:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 3012. [2019-11-07 04:12:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3012 states. [2019-11-07 04:12:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 4479 transitions. [2019-11-07 04:12:49,202 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 4479 transitions. Word has length 118 [2019-11-07 04:12:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:49,205 INFO L462 AbstractCegarLoop]: Abstraction has 3012 states and 4479 transitions. [2019-11-07 04:12:49,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:12:49,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 4479 transitions. [2019-11-07 04:12:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:12:49,213 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:49,214 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:12:49,430 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:49,430 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:49,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:49,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1768528239, now seen corresponding path program 1 times [2019-11-07 04:12:49,431 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:49,431 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526104963] [2019-11-07 04:12:49,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:12:49,636 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526104963] [2019-11-07 04:12:49,637 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049941949] [2019-11-07 04:12:49,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:50,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 3018 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:12:50,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 04:12:50,575 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:12:50,679 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:50,679 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [7] total 7 [2019-11-07 04:12:50,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311970164] [2019-11-07 04:12:50,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:12:50,687 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:50,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:12:50,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:12:50,688 INFO L87 Difference]: Start difference. First operand 3012 states and 4479 transitions. Second operand 4 states. [2019-11-07 04:12:52,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:52,016 INFO L93 Difference]: Finished difference Result 11549 states and 17701 transitions. [2019-11-07 04:12:52,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:12:52,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-11-07 04:12:52,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:52,095 INFO L225 Difference]: With dead ends: 11549 [2019-11-07 04:12:52,096 INFO L226 Difference]: Without dead ends: 8609 [2019-11-07 04:12:52,129 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:12:52,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8609 states. [2019-11-07 04:12:52,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8609 to 8470. [2019-11-07 04:12:52,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8470 states. [2019-11-07 04:12:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 12850 transitions. [2019-11-07 04:12:52,620 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 12850 transitions. Word has length 119 [2019-11-07 04:12:52,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:52,622 INFO L462 AbstractCegarLoop]: Abstraction has 8470 states and 12850 transitions. [2019-11-07 04:12:52,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:12:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 12850 transitions. [2019-11-07 04:12:52,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:12:52,626 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:52,626 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:12:52,834 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:52,834 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:52,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1488570406, now seen corresponding path program 1 times [2019-11-07 04:12:52,835 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:52,835 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580628092] [2019-11-07 04:12:52,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:53,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:12:53,144 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580628092] [2019-11-07 04:12:53,144 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045731756] [2019-11-07 04:12:53,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:53,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-07 04:12:53,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:53,909 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-11-07 04:12:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:12:53,970 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:54,497 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-11-07 04:12:55,616 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-11-07 04:12:55,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:12:55,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:12:55,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:12:55,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:12:55,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:12:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:12:55,831 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:12:55,831 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 13 [2019-11-07 04:12:55,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058386572] [2019-11-07 04:12:55,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:12:55,834 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:55,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:12:55,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:12:55,835 INFO L87 Difference]: Start difference. First operand 8470 states and 12850 transitions. Second operand 6 states. [2019-11-07 04:12:57,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:57,498 INFO L93 Difference]: Finished difference Result 17048 states and 25944 transitions. [2019-11-07 04:12:57,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:12:57,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-11-07 04:12:57,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:57,578 INFO L225 Difference]: With dead ends: 17048 [2019-11-07 04:12:57,578 INFO L226 Difference]: Without dead ends: 8609 [2019-11-07 04:12:57,631 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 236 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:12:57,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8609 states. [2019-11-07 04:12:57,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8609 to 8470. [2019-11-07 04:12:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8470 states. [2019-11-07 04:12:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 12847 transitions. [2019-11-07 04:12:58,031 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 12847 transitions. Word has length 120 [2019-11-07 04:12:58,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:58,032 INFO L462 AbstractCegarLoop]: Abstraction has 8470 states and 12847 transitions. [2019-11-07 04:12:58,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:12:58,032 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 12847 transitions. [2019-11-07 04:12:58,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 04:12:58,037 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:58,037 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:12:58,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:58,246 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:58,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:58,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1026878265, now seen corresponding path program 1 times [2019-11-07 04:12:58,312 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:58,313 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870729087] [2019-11-07 04:12:58,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:12:58,548 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870729087] [2019-11-07 04:12:58,548 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651439729] [2019-11-07 04:12:58,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:59,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 3029 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:12:59,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:12:59,160 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:59,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:12:59,256 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:59,256 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-11-07 04:12:59,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998723951] [2019-11-07 04:12:59,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:12:59,257 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:59,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:12:59,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:59,258 INFO L87 Difference]: Start difference. First operand 8470 states and 12847 transitions. Second operand 4 states. [2019-11-07 04:12:59,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:59,593 INFO L93 Difference]: Finished difference Result 17179 states and 26331 transitions. [2019-11-07 04:12:59,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:12:59,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-11-07 04:12:59,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:59,660 INFO L225 Difference]: With dead ends: 17179 [2019-11-07 04:12:59,661 INFO L226 Difference]: Without dead ends: 8740 [2019-11-07 04:12:59,693 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:59,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8740 states. [2019-11-07 04:13:00,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8740 to 8569. [2019-11-07 04:13:00,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8569 states. [2019-11-07 04:13:00,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8569 states to 8569 states and 12964 transitions. [2019-11-07 04:13:00,207 INFO L78 Accepts]: Start accepts. Automaton has 8569 states and 12964 transitions. Word has length 121 [2019-11-07 04:13:00,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:00,207 INFO L462 AbstractCegarLoop]: Abstraction has 8569 states and 12964 transitions. [2019-11-07 04:13:00,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:13:00,208 INFO L276 IsEmpty]: Start isEmpty. Operand 8569 states and 12964 transitions. [2019-11-07 04:13:00,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 04:13:00,212 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:00,212 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:00,417 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:13:00,417 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:00,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:00,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1402624380, now seen corresponding path program 1 times [2019-11-07 04:13:00,419 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:00,419 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491298973] [2019-11-07 04:13:00,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 04:13:00,693 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491298973] [2019-11-07 04:13:00,693 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720150171] [2019-11-07 04:13:00,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:13:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:01,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 3018 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:13:01,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:13:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:13:01,305 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:13:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 04:13:01,419 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:13:01,419 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-11-07 04:13:01,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714674476] [2019-11-07 04:13:01,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:01,421 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:01,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:01,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:13:01,421 INFO L87 Difference]: Start difference. First operand 8569 states and 12964 transitions. Second operand 3 states. [2019-11-07 04:13:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:01,746 INFO L93 Difference]: Finished difference Result 21211 states and 32538 transitions. [2019-11-07 04:13:01,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:01,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-11-07 04:13:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:01,832 INFO L225 Difference]: With dead ends: 21211 [2019-11-07 04:13:01,832 INFO L226 Difference]: Without dead ends: 12673 [2019-11-07 04:13:01,867 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:13:01,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12673 states.