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_spec14_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:06:26,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:06:26,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:06:26,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:06:26,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:06:26,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:06:26,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:06:26,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:06:26,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:06:26,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:06:26,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:06:26,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:06:26,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:06:26,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:06:26,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:06:26,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:06:26,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:06:26,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:06:26,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:06:26,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:06:26,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:06:26,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:06:26,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:06:26,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:06:26,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:06:26,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:06:26,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:06:26,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:06:26,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:06:26,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:06:26,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:06:26,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:06:26,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:06:26,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:06:26,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:06:26,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:06:26,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:06:26,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:06:26,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:06:26,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:06:26,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:06:26,186 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 [2019-10-15 03:06:26,205 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:06:26,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:06:26,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:06:26,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:06:26,208 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:06:26,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:06:26,209 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:06:26,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:06:26,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:06:26,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:06:26,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:06:26,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:06:26,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:06:26,211 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:06:26,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:06:26,212 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:06:26,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:06:26,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:06:26,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:06:26,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:06:26,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:06:26,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:06:26,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:06:26,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:06:26,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:06:26,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:06:26,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:06:26,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:06:26,214 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 [2019-10-15 03:06:26,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:06:26,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:06:26,565 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:06:26,568 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:06:26,568 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:06:26,569 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product23.cil.c [2019-10-15 03:06:26,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330a5d77f/161e30083da145038c91f4f4c8d2954c/FLAG81410e583 [2019-10-15 03:06:27,343 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:06:27,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product23.cil.c [2019-10-15 03:06:27,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330a5d77f/161e30083da145038c91f4f4c8d2954c/FLAG81410e583 [2019-10-15 03:06:27,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330a5d77f/161e30083da145038c91f4f4c8d2954c [2019-10-15 03:06:27,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:06:27,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:06:27,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:27,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:06:27,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:06:27,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:27" (1/1) ... [2019-10-15 03:06:27,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46cde57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:27, skipping insertion in model container [2019-10-15 03:06:27,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:27" (1/1) ... [2019-10-15 03:06:27,543 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:06:27,636 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:06:28,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:28,481 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:06:28,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:28,739 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:06:28,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:28 WrapperNode [2019-10-15 03:06:28,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:28,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:06:28,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:06:28,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:06:28,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:28" (1/1) ... [2019-10-15 03:06:28,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:28" (1/1) ... [2019-10-15 03:06:28,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:28" (1/1) ... [2019-10-15 03:06:28,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:28" (1/1) ... [2019-10-15 03:06:28,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:28" (1/1) ... [2019-10-15 03:06:28,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:28" (1/1) ... [2019-10-15 03:06:28,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:28" (1/1) ... [2019-10-15 03:06:28,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:06:28,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:06:28,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:06:28,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:06:28,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:28" (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 [2019-10-15 03:06:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:06:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:06:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:06:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:06:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:06:29,073 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:06:29,073 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:06:29,073 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:06:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:06:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:06:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:06:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:06:29,075 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:06:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:06:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:06:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:06:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:06:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:06:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:06:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:06:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:06:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:06:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:06:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:06:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:06:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:06:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:06:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:06:29,085 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:06:29,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:06:29,085 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:06:29,085 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:06:29,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:06:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:06:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:06:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:06:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:06:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:06:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:06:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:06:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:06:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:06:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:06:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:06:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:06:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:06:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:06:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:06:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:06:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:06:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:06:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:06:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:06:29,090 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:06:29,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:06:29,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:06:29,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:29,091 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:06:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:06:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:06:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:06:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:06:29,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:06:29,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:06:29,093 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:06:29,094 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:06:29,094 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:06:29,094 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:06:29,095 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:06:29,095 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:06:29,096 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:06:29,096 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:06:29,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:06:29,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:06:29,097 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:06:29,098 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:06:29,098 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:06:29,098 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:06:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:06:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:06:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:06:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:06:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:06:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:06:29,101 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:06:29,101 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:06:29,101 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:06:29,101 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:06:29,101 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:06:29,101 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:06:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:06:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:06:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:06:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:06:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:06:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:06:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:06:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:06:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:06:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:06:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:06:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:06:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:06:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:06:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:06:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:06:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:06:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:06:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:06:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:06:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:06:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:06:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:06:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:06:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:06:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:06:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:06:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:06:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:06:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:06:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:06:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:06:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:06:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:06:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:06:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:06:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:06:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:06:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:06:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:06:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:06:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:06:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:06:29,120 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:06:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:06:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:06:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:06:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:06:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:06:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:06:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:06:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:06:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:06:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:06:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:06:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:06:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:06:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:06:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:06:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:06:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:06:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:06:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:06:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:06:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:06:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:06:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:06:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:06:35,384 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:06:35,384 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:06:35,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:35 BoogieIcfgContainer [2019-10-15 03:06:35,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:06:35,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:06:35,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:06:35,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:06:35,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:06:27" (1/3) ... [2019-10-15 03:06:35,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76df9e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:35, skipping insertion in model container [2019-10-15 03:06:35,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:28" (2/3) ... [2019-10-15 03:06:35,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76df9e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:35, skipping insertion in model container [2019-10-15 03:06:35,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:35" (3/3) ... [2019-10-15 03:06:35,399 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product23.cil.c [2019-10-15 03:06:35,409 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:06:35,420 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:06:35,433 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:06:35,570 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:06:35,571 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:06:35,571 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:06:35,571 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:06:35,583 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:06:35,584 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:06:35,584 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:06:35,584 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:06:35,630 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states. [2019-10-15 03:06:35,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:06:35,658 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:35,659 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:35,662 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:35,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:35,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1590324683, now seen corresponding path program 1 times [2019-10-15 03:06:35,682 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:35,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634619116] [2019-10-15 03:06:35,683 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:35,683 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:35,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:06:36,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634619116] [2019-10-15 03:06:36,533 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:36,533 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:06:36,534 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447483798] [2019-10-15 03:06:36,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:36,543 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:36,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:36,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:36,562 INFO L87 Difference]: Start difference. First operand 565 states. Second operand 5 states. [2019-10-15 03:06:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:37,771 INFO L93 Difference]: Finished difference Result 1297 states and 1945 transitions. [2019-10-15 03:06:37,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:06:37,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2019-10-15 03:06:37,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:37,808 INFO L225 Difference]: With dead ends: 1297 [2019-10-15 03:06:37,808 INFO L226 Difference]: Without dead ends: 854 [2019-10-15 03:06:37,819 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:06:37,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2019-10-15 03:06:38,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 847. [2019-10-15 03:06:38,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2019-10-15 03:06:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1260 transitions. [2019-10-15 03:06:38,113 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1260 transitions. Word has length 110 [2019-10-15 03:06:38,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:38,115 INFO L462 AbstractCegarLoop]: Abstraction has 847 states and 1260 transitions. [2019-10-15 03:06:38,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:38,115 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1260 transitions. [2019-10-15 03:06:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-15 03:06:38,134 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:38,134 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:38,135 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:38,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:38,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1714167168, now seen corresponding path program 1 times [2019-10-15 03:06:38,137 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:38,137 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129726588] [2019-10-15 03:06:38,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:38,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:38,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:06:38,603 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129726588] [2019-10-15 03:06:38,604 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:38,604 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:38,604 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852741512] [2019-10-15 03:06:38,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:38,607 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:38,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:38,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:38,608 INFO L87 Difference]: Start difference. First operand 847 states and 1260 transitions. Second operand 7 states. [2019-10-15 03:06:40,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:40,497 INFO L93 Difference]: Finished difference Result 989 states and 1435 transitions. [2019-10-15 03:06:40,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:06:40,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2019-10-15 03:06:40,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:40,514 INFO L225 Difference]: With dead ends: 989 [2019-10-15 03:06:40,516 INFO L226 Difference]: Without dead ends: 986 [2019-10-15 03:06:40,518 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:06:40,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2019-10-15 03:06:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 978. [2019-10-15 03:06:40,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2019-10-15 03:06:40,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1423 transitions. [2019-10-15 03:06:40,612 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1423 transitions. Word has length 114 [2019-10-15 03:06:40,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:40,613 INFO L462 AbstractCegarLoop]: Abstraction has 978 states and 1423 transitions. [2019-10-15 03:06:40,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:40,614 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1423 transitions. [2019-10-15 03:06:40,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-15 03:06:40,626 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:40,627 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-10-15 03:06:40,627 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:40,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:40,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1666718681, now seen corresponding path program 1 times [2019-10-15 03:06:40,628 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:40,628 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740686287] [2019-10-15 03:06:40,628 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:40,628 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:40,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 03:06:40,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740686287] [2019-10-15 03:06:40,864 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:40,864 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:06:40,865 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765038897] [2019-10-15 03:06:40,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:40,866 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:40,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:40,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:40,866 INFO L87 Difference]: Start difference. First operand 978 states and 1423 transitions. Second operand 5 states. [2019-10-15 03:06:40,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:40,946 INFO L93 Difference]: Finished difference Result 1935 states and 2833 transitions. [2019-10-15 03:06:40,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:40,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-15 03:06:40,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:40,956 INFO L225 Difference]: With dead ends: 1935 [2019-10-15 03:06:40,956 INFO L226 Difference]: Without dead ends: 988 [2019-10-15 03:06:40,963 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:40,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2019-10-15 03:06:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 988. [2019-10-15 03:06:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2019-10-15 03:06:41,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1433 transitions. [2019-10-15 03:06:41,020 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1433 transitions. Word has length 150 [2019-10-15 03:06:41,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:41,021 INFO L462 AbstractCegarLoop]: Abstraction has 988 states and 1433 transitions. [2019-10-15 03:06:41,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:41,021 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1433 transitions. [2019-10-15 03:06:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 03:06:41,029 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:41,030 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-10-15 03:06:41,030 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:41,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:41,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1444399893, now seen corresponding path program 1 times [2019-10-15 03:06:41,031 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:41,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287125454] [2019-10-15 03:06:41,032 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:41,032 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:41,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-15 03:06:41,295 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287125454] [2019-10-15 03:06:41,295 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908986042] [2019-10-15 03:06:41,295 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 [2019-10-15 03:06:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:41,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 2929 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:41,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 03:06:42,060 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-15 03:06:42,405 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:42,405 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 03:06:42,405 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715251450] [2019-10-15 03:06:42,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:42,406 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:42,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:42,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:06:42,408 INFO L87 Difference]: Start difference. First operand 988 states and 1433 transitions. Second operand 4 states. [2019-10-15 03:06:42,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:42,727 INFO L93 Difference]: Finished difference Result 2023 states and 2999 transitions. [2019-10-15 03:06:42,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:42,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2019-10-15 03:06:42,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:42,737 INFO L225 Difference]: With dead ends: 2023 [2019-10-15 03:06:42,738 INFO L226 Difference]: Without dead ends: 1066 [2019-10-15 03:06:42,743 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 317 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:06:42,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-15 03:06:42,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2019-10-15 03:06:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2019-10-15 03:06:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1579 transitions. [2019-10-15 03:06:42,806 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1579 transitions. Word has length 159 [2019-10-15 03:06:42,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:42,807 INFO L462 AbstractCegarLoop]: Abstraction has 1066 states and 1579 transitions. [2019-10-15 03:06:42,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:42,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1579 transitions. [2019-10-15 03:06:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 03:06:42,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:42,816 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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] [2019-10-15 03:06:43,027 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:43,028 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:43,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:43,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2138647978, now seen corresponding path program 1 times [2019-10-15 03:06:43,029 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:43,030 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088180481] [2019-10-15 03:06:43,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:43,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:43,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-15 03:06:43,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088180481] [2019-10-15 03:06:43,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486384974] [2019-10-15 03:06:43,229 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 [2019-10-15 03:06:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:43,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:44,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:06:44,098 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:44,413 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-10-15 03:06:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-15 03:06:44,509 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:44,510 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:44,510 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846719206] [2019-10-15 03:06:44,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:44,514 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:44,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:44,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:44,515 INFO L87 Difference]: Start difference. First operand 1066 states and 1579 transitions. Second operand 4 states. [2019-10-15 03:06:44,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:44,959 INFO L93 Difference]: Finished difference Result 2179 states and 3289 transitions. [2019-10-15 03:06:44,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:44,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2019-10-15 03:06:44,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:44,971 INFO L225 Difference]: With dead ends: 2179 [2019-10-15 03:06:44,971 INFO L226 Difference]: Without dead ends: 1144 [2019-10-15 03:06:44,979 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 325 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:44,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2019-10-15 03:06:45,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1144. [2019-10-15 03:06:45,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1144 states. [2019-10-15 03:06:45,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1725 transitions. [2019-10-15 03:06:45,043 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1725 transitions. Word has length 164 [2019-10-15 03:06:45,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:45,044 INFO L462 AbstractCegarLoop]: Abstraction has 1144 states and 1725 transitions. [2019-10-15 03:06:45,044 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:45,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1725 transitions. [2019-10-15 03:06:45,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-15 03:06:45,051 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:45,051 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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] [2019-10-15 03:06:45,261 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:45,262 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:45,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:45,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1557122022, now seen corresponding path program 1 times [2019-10-15 03:06:45,264 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:45,264 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272982783] [2019-10-15 03:06:45,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:45,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:45,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:45,471 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 03:06:45,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272982783] [2019-10-15 03:06:45,472 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835334817] [2019-10-15 03:06:45,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:46,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:46,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 03:06:46,203 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 03:06:46,406 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:46,406 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:46,406 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806827601] [2019-10-15 03:06:46,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:46,407 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:46,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:46,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:46,408 INFO L87 Difference]: Start difference. First operand 1144 states and 1725 transitions. Second operand 4 states. [2019-10-15 03:06:46,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:46,633 INFO L93 Difference]: Finished difference Result 2335 states and 3579 transitions. [2019-10-15 03:06:46,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:46,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2019-10-15 03:06:46,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:46,643 INFO L225 Difference]: With dead ends: 2335 [2019-10-15 03:06:46,644 INFO L226 Difference]: Without dead ends: 1222 [2019-10-15 03:06:46,651 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 333 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:46,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2019-10-15 03:06:46,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1222. [2019-10-15 03:06:46,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1222 states. [2019-10-15 03:06:46,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1871 transitions. [2019-10-15 03:06:46,740 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1871 transitions. Word has length 168 [2019-10-15 03:06:46,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:46,742 INFO L462 AbstractCegarLoop]: Abstraction has 1222 states and 1871 transitions. [2019-10-15 03:06:46,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1871 transitions. [2019-10-15 03:06:46,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 03:06:46,751 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:46,751 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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] [2019-10-15 03:06:46,962 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:46,962 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:46,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:46,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1094463947, now seen corresponding path program 1 times [2019-10-15 03:06:46,963 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:46,963 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621508891] [2019-10-15 03:06:46,963 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:46,964 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:46,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 03:06:47,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621508891] [2019-10-15 03:06:47,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146380009] [2019-10-15 03:06:47,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:47,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:47,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 03:06:47,965 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 03:06:48,220 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:48,220 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:48,220 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581516377] [2019-10-15 03:06:48,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:48,222 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:48,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:48,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:48,223 INFO L87 Difference]: Start difference. First operand 1222 states and 1871 transitions. Second operand 4 states. [2019-10-15 03:06:48,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:48,464 INFO L93 Difference]: Finished difference Result 2491 states and 3869 transitions. [2019-10-15 03:06:48,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:48,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-10-15 03:06:48,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:48,476 INFO L225 Difference]: With dead ends: 2491 [2019-10-15 03:06:48,476 INFO L226 Difference]: Without dead ends: 1300 [2019-10-15 03:06:48,483 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 339 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:48,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2019-10-15 03:06:48,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1300. [2019-10-15 03:06:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1300 states. [2019-10-15 03:06:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 2017 transitions. [2019-10-15 03:06:48,548 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 2017 transitions. Word has length 171 [2019-10-15 03:06:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:48,551 INFO L462 AbstractCegarLoop]: Abstraction has 1300 states and 2017 transitions. [2019-10-15 03:06:48,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 2017 transitions. [2019-10-15 03:06:48,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-15 03:06:48,559 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:48,559 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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] [2019-10-15 03:06:48,768 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:48,768 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:48,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:48,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1761699205, now seen corresponding path program 1 times [2019-10-15 03:06:48,769 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:48,771 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767036933] [2019-10-15 03:06:48,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:48,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:48,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 03:06:48,999 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767036933] [2019-10-15 03:06:48,999 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:48,999 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:06:49,000 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301430448] [2019-10-15 03:06:49,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:49,001 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:49,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:49,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:06:49,001 INFO L87 Difference]: Start difference. First operand 1300 states and 2017 transitions. Second operand 4 states. [2019-10-15 03:06:49,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:49,270 INFO L93 Difference]: Finished difference Result 2653 states and 4157 transitions. [2019-10-15 03:06:49,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:49,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2019-10-15 03:06:49,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:49,283 INFO L225 Difference]: With dead ends: 2653 [2019-10-15 03:06:49,283 INFO L226 Difference]: Without dead ends: 1368 [2019-10-15 03:06:49,293 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:49,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2019-10-15 03:06:49,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1368. [2019-10-15 03:06:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2019-10-15 03:06:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2053 transitions. [2019-10-15 03:06:49,375 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2053 transitions. Word has length 173 [2019-10-15 03:06:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:49,376 INFO L462 AbstractCegarLoop]: Abstraction has 1368 states and 2053 transitions. [2019-10-15 03:06:49,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2053 transitions. [2019-10-15 03:06:49,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-15 03:06:49,382 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:49,383 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 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] [2019-10-15 03:06:49,383 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:49,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:49,384 INFO L82 PathProgramCache]: Analyzing trace with hash -616958102, now seen corresponding path program 1 times [2019-10-15 03:06:49,384 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:49,384 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351233165] [2019-10-15 03:06:49,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:49,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:49,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 03:06:49,654 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351233165] [2019-10-15 03:06:49,661 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:49,661 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:49,662 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520790063] [2019-10-15 03:06:49,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:49,663 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:49,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:49,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:49,664 INFO L87 Difference]: Start difference. First operand 1368 states and 2053 transitions. Second operand 7 states. [2019-10-15 03:06:50,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:50,854 INFO L93 Difference]: Finished difference Result 2916 states and 4424 transitions. [2019-10-15 03:06:50,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:06:50,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2019-10-15 03:06:50,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:50,866 INFO L225 Difference]: With dead ends: 2916 [2019-10-15 03:06:50,866 INFO L226 Difference]: Without dead ends: 1336 [2019-10-15 03:06:50,874 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:06:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2019-10-15 03:06:50,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1320. [2019-10-15 03:06:50,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2019-10-15 03:06:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1895 transitions. [2019-10-15 03:06:50,932 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1895 transitions. Word has length 173 [2019-10-15 03:06:50,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:50,933 INFO L462 AbstractCegarLoop]: Abstraction has 1320 states and 1895 transitions. [2019-10-15 03:06:50,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:50,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1895 transitions. [2019-10-15 03:06:50,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-15 03:06:50,940 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:50,940 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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] [2019-10-15 03:06:50,940 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:50,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:50,941 INFO L82 PathProgramCache]: Analyzing trace with hash -2033924598, now seen corresponding path program 1 times [2019-10-15 03:06:50,941 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:50,941 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838943023] [2019-10-15 03:06:50,941 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:50,941 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:50,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 03:06:51,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838943023] [2019-10-15 03:06:51,649 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556752208] [2019-10-15 03:06:51,649 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 [2019-10-15 03:06:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:52,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 74 conjunts are in the unsatisfiable core [2019-10-15 03:06:52,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:53,482 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2019-10-15 03:06:53,678 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-10-15 03:06:53,678 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:54,236 WARN L191 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-15 03:06:54,488 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:54,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:54,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:54,490 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:54,491 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:54,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-15 03:06:54,796 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 35 [2019-10-15 03:06:55,138 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-10-15 03:06:55,258 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-10-15 03:06:55,690 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-15 03:06:55,748 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:55,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:55,752 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:55,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-15 03:06:55,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:55,754 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:55,849 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:55,850 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:55,851 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:55,852 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:55,852 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms