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_spec13_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:01:53,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:01:53,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:01:53,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:01:53,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:01:53,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:01:53,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:01:53,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:01:53,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:01:53,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:01:53,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:01:53,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:01:53,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:01:53,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:01:53,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:01:53,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:01:53,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:01:53,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:01:53,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:01:53,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:01:53,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:01:53,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:01:53,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:01:53,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:01:53,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:01:53,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:01:53,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:01:53,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:01:53,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:01:53,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:01:53,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:01:53,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:01:53,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:01:53,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:01:53,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:01:53,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:01:53,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:01:53,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:01:53,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:01:53,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:01:53,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:01:53,186 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 [2019-10-13 23:01:53,209 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:01:53,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:01:53,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:01:53,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:01:53,211 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:01:53,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:01:53,212 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:01:53,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:01:53,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:01:53,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:01:53,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:01:53,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:01:53,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:01:53,213 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:01:53,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:01:53,213 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:01:53,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:01:53,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:01:53,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:01:53,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:01:53,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:01:53,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:01:53,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:01:53,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:01:53,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:01:53,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:01:53,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:01:53,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:01:53,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:01:53,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:01:53,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:01:53,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:01:53,493 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:01:53,493 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:01:53,494 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c [2019-10-13 23:01:53,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c808b028/2006eb2914d04311a552de63d99156fe/FLAG31dc3aa94 [2019-10-13 23:01:54,211 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:01:54,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c [2019-10-13 23:01:54,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c808b028/2006eb2914d04311a552de63d99156fe/FLAG31dc3aa94 [2019-10-13 23:01:54,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c808b028/2006eb2914d04311a552de63d99156fe [2019-10-13 23:01:54,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:01:54,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:01:54,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:01:54,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:01:54,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:01:54,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:01:54" (1/1) ... [2019-10-13 23:01:54,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d682ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:54, skipping insertion in model container [2019-10-13 23:01:54,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:01:54" (1/1) ... [2019-10-13 23:01:54,463 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:01:54,548 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:01:55,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:01:55,250 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:01:55,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:01:55,516 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:01:55,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:55 WrapperNode [2019-10-13 23:01:55,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:01:55,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:01:55,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:01:55,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:01:55,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:55" (1/1) ... [2019-10-13 23:01:55,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:55" (1/1) ... [2019-10-13 23:01:55,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:55" (1/1) ... [2019-10-13 23:01:55,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:55" (1/1) ... [2019-10-13 23:01:55,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:55" (1/1) ... [2019-10-13 23:01:55,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:55" (1/1) ... [2019-10-13 23:01:55,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:55" (1/1) ... [2019-10-13 23:01:55,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:01:55,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:01:55,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:01:55,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:01:55,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:01:55,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:01:55,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:01:55,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:01:55,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:01:55,849 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:01:55,849 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:01:55,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-13 23:01:55,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-13 23:01:55,850 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:01:55,850 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:01:55,850 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:01:55,851 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:01:55,851 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:01:55,851 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:01:55,851 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:01:55,852 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:01:55,852 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:01:55,852 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:01:55,852 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:01:55,852 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:01:55,853 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:01:55,853 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:01:55,853 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:01:55,853 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:01:55,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:01:55,854 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:01:55,854 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:01:55,854 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:01:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:01:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:01:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:01:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:01:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:01:55,856 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:01:55,856 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:01:55,856 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:01:55,856 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:01:55,856 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:01:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:01:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:01:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:01:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:01:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:01:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:01:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:01:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:01:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:01:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:01:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:01:55,859 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:01:55,859 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:01:55,859 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:01:55,859 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:01:55,859 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:01:55,860 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:01:55,860 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:01:55,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:01:55,860 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:01:55,860 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:01:55,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:01:55,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:01:55,861 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:01:55,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:01:55,861 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:01:55,862 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:01:55,862 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:01:55,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:01:55,862 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:01:55,862 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:01:55,862 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:01:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:01:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:01:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:01:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 23:01:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:01:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 23:01:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:01:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:01:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:01:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:01:55,865 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:01:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:01:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:01:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:01:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:01:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:01:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:01:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:01:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:01:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:01:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:01:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:01:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:01:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:01:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-13 23:01:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:01:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-13 23:01:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:01:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:01:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:01:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:01:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:01:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:01:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:01:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:01:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:01:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:01:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:01:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:01:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:01:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:01:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:01:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:01:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:01:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:01:55,872 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:01:55,872 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:01:55,872 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:01:55,872 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:01:55,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:01:55,872 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:01:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:01:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:01:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:01:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:01:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:01:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:01:55,874 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:01:55,874 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:01:55,874 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:01:55,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:01:55,874 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:01:55,874 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:01:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:01:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:01:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:01:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:01:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:01:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:01:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:01:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:01:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:01:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:01:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:01:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:01:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:01:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:01:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:01:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:01:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:01:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:01:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:01:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:01:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:01:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:01:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:01:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:01:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:01:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:01:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:01:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:01:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:01:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:01:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:01:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:01:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:01:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:01:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:01:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:01:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:01:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:01:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:01:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 23:01:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 23:01:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:01:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:01:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:02:00,823 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:02:00,824 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:02:00,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:00 BoogieIcfgContainer [2019-10-13 23:02:00,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:02:00,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:02:00,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:02:00,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:02:00,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:01:54" (1/3) ... [2019-10-13 23:02:00,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360b9ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:00, skipping insertion in model container [2019-10-13 23:02:00,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:55" (2/3) ... [2019-10-13 23:02:00,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360b9ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:00, skipping insertion in model container [2019-10-13 23:02:00,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:00" (3/3) ... [2019-10-13 23:02:00,836 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product32.cil.c [2019-10-13 23:02:00,846 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:02:00,856 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:02:00,864 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:02:00,900 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:02:00,900 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:02:00,901 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:02:00,901 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:02:00,901 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:02:00,901 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:02:00,901 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:02:00,901 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:02:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states. [2019-10-13 23:02:00,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 23:02:00,970 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:00,972 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:00,975 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:00,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:00,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1464723508, now seen corresponding path program 1 times [2019-10-13 23:02:00,991 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:00,993 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978183581] [2019-10-13 23:02:00,994 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:00,994 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:00,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:02:01,665 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978183581] [2019-10-13 23:02:01,665 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6085126] [2019-10-13 23:02:01,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:02,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 23:02:02,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:02:02,321 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:02:02,424 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:02,424 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 2 [2019-10-13 23:02:02,425 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049289226] [2019-10-13 23:02:02,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:02:02,431 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:02,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:02:02,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:02:02,447 INFO L87 Difference]: Start difference. First operand 638 states. Second operand 2 states. [2019-10-13 23:02:02,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:02,581 INFO L93 Difference]: Finished difference Result 1014 states and 1526 transitions. [2019-10-13 23:02:02,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:02:02,584 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 95 [2019-10-13 23:02:02,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:02,616 INFO L225 Difference]: With dead ends: 1014 [2019-10-13 23:02:02,617 INFO L226 Difference]: Without dead ends: 515 [2019-10-13 23:02:02,626 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:02:02,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2019-10-13 23:02:02,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2019-10-13 23:02:02,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2019-10-13 23:02:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 759 transitions. [2019-10-13 23:02:02,738 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 759 transitions. Word has length 95 [2019-10-13 23:02:02,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:02,740 INFO L462 AbstractCegarLoop]: Abstraction has 515 states and 759 transitions. [2019-10-13 23:02:02,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:02:02,741 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 759 transitions. [2019-10-13 23:02:02,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 23:02:02,746 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:02,747 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:02,956 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:02,956 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:02,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:02,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1628114196, now seen corresponding path program 1 times [2019-10-13 23:02:02,958 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:02,958 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176628278] [2019-10-13 23:02:02,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:02,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:02,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:02:03,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176628278] [2019-10-13 23:02:03,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157532543] [2019-10-13 23:02:03,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:03,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 23:02:03,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:02:03,903 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:02:04,034 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:02:04,034 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-10-13 23:02:04,034 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999755829] [2019-10-13 23:02:04,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:04,036 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:04,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:04,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:02:04,036 INFO L87 Difference]: Start difference. First operand 515 states and 759 transitions. Second operand 4 states. [2019-10-13 23:02:05,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:05,337 INFO L93 Difference]: Finished difference Result 1933 states and 2924 transitions. [2019-10-13 23:02:05,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:02:05,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2019-10-13 23:02:05,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:05,351 INFO L225 Difference]: With dead ends: 1933 [2019-10-13 23:02:05,352 INFO L226 Difference]: Without dead ends: 1455 [2019-10-13 23:02:05,355 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:02:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2019-10-13 23:02:05,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1363. [2019-10-13 23:02:05,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2019-10-13 23:02:05,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2069 transitions. [2019-10-13 23:02:05,486 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2069 transitions. Word has length 95 [2019-10-13 23:02:05,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:05,489 INFO L462 AbstractCegarLoop]: Abstraction has 1363 states and 2069 transitions. [2019-10-13 23:02:05,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:05,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2069 transitions. [2019-10-13 23:02:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 23:02:05,497 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:05,498 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:05,706 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:05,707 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:05,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:05,708 INFO L82 PathProgramCache]: Analyzing trace with hash 2119660925, now seen corresponding path program 1 times [2019-10-13 23:02:05,708 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:05,709 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209944024] [2019-10-13 23:02:05,709 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:05,709 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:05,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:02:05,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209944024] [2019-10-13 23:02:05,992 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:05,992 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:02:05,992 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991012178] [2019-10-13 23:02:05,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:02:05,993 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:05,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:02:05,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:02:05,994 INFO L87 Difference]: Start difference. First operand 1363 states and 2069 transitions. Second operand 10 states. [2019-10-13 23:02:07,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:07,248 INFO L93 Difference]: Finished difference Result 2893 states and 4406 transitions. [2019-10-13 23:02:07,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 23:02:07,249 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 142 [2019-10-13 23:02:07,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:07,263 INFO L225 Difference]: With dead ends: 2893 [2019-10-13 23:02:07,264 INFO L226 Difference]: Without dead ends: 1567 [2019-10-13 23:02:07,271 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:02:07,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2019-10-13 23:02:07,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1559. [2019-10-13 23:02:07,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2019-10-13 23:02:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2348 transitions. [2019-10-13 23:02:07,373 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2348 transitions. Word has length 142 [2019-10-13 23:02:07,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:07,374 INFO L462 AbstractCegarLoop]: Abstraction has 1559 states and 2348 transitions. [2019-10-13 23:02:07,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:02:07,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2348 transitions. [2019-10-13 23:02:07,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 23:02:07,390 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:07,390 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:07,391 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:07,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:07,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1983709932, now seen corresponding path program 1 times [2019-10-13 23:02:07,392 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:07,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005787235] [2019-10-13 23:02:07,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:07,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:07,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:07,700 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:02:07,701 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005787235] [2019-10-13 23:02:07,701 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:07,701 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:07,703 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540619819] [2019-10-13 23:02:07,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:07,704 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:07,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:07,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:07,705 INFO L87 Difference]: Start difference. First operand 1559 states and 2348 transitions. Second operand 7 states. [2019-10-13 23:02:12,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:12,026 INFO L93 Difference]: Finished difference Result 4343 states and 6610 transitions. [2019-10-13 23:02:12,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:02:12,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2019-10-13 23:02:12,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:12,047 INFO L225 Difference]: With dead ends: 4343 [2019-10-13 23:02:12,048 INFO L226 Difference]: Without dead ends: 2824 [2019-10-13 23:02:12,056 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:02:12,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2019-10-13 23:02:12,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2722. [2019-10-13 23:02:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2722 states. [2019-10-13 23:02:12,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 4128 transitions. [2019-10-13 23:02:12,192 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 4128 transitions. Word has length 143 [2019-10-13 23:02:12,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:12,193 INFO L462 AbstractCegarLoop]: Abstraction has 2722 states and 4128 transitions. [2019-10-13 23:02:12,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:12,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 4128 transitions. [2019-10-13 23:02:12,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 23:02:12,198 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:12,198 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:12,198 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:12,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:12,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1361981063, now seen corresponding path program 1 times [2019-10-13 23:02:12,199 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:12,199 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272342530] [2019-10-13 23:02:12,199 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:12,200 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:12,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 23:02:12,418 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272342530] [2019-10-13 23:02:12,418 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575158119] [2019-10-13 23:02:12,418 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 [2019-10-13 23:02:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:13,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 3214 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 23:02:13,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:02:13,062 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 23:02:13,224 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:13,224 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-10-13 23:02:13,224 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825267878] [2019-10-13 23:02:13,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:13,225 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:13,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:13,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:13,226 INFO L87 Difference]: Start difference. First operand 2722 states and 4128 transitions. Second operand 4 states. [2019-10-13 23:02:13,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:13,350 INFO L93 Difference]: Finished difference Result 5455 states and 8432 transitions. [2019-10-13 23:02:13,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:13,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-10-13 23:02:13,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:13,373 INFO L225 Difference]: With dead ends: 5455 [2019-10-13 23:02:13,373 INFO L226 Difference]: Without dead ends: 2770 [2019-10-13 23:02:13,388 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:02:13,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2019-10-13 23:02:13,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2770. [2019-10-13 23:02:13,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2019-10-13 23:02:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 4176 transitions. [2019-10-13 23:02:13,521 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 4176 transitions. Word has length 147 [2019-10-13 23:02:13,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:13,524 INFO L462 AbstractCegarLoop]: Abstraction has 2770 states and 4176 transitions. [2019-10-13 23:02:13,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:13,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 4176 transitions. [2019-10-13 23:02:13,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 23:02:13,530 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:13,531 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:13,738 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:13,739 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:13,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:13,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1842947682, now seen corresponding path program 1 times [2019-10-13 23:02:13,739 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:13,739 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747935024] [2019-10-13 23:02:13,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:13,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:13,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:02:13,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747935024] [2019-10-13 23:02:13,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850994418] [2019-10-13 23:02:13,923 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 [2019-10-13 23:02:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:14,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 3219 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 23:02:14,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 23:02:14,890 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 23:02:15,075 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:02:15,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-13 23:02:15,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769719783] [2019-10-13 23:02:15,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:15,078 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:15,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:15,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:15,079 INFO L87 Difference]: Start difference. First operand 2770 states and 4176 transitions. Second operand 5 states. [2019-10-13 23:02:15,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:15,203 INFO L93 Difference]: Finished difference Result 5527 states and 8472 transitions. [2019-10-13 23:02:15,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:15,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2019-10-13 23:02:15,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:15,231 INFO L225 Difference]: With dead ends: 5527 [2019-10-13 23:02:15,231 INFO L226 Difference]: Without dead ends: 2762 [2019-10-13 23:02:15,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:02:15,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2019-10-13 23:02:15,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 2762. [2019-10-13 23:02:15,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2762 states. [2019-10-13 23:02:15,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4144 transitions. [2019-10-13 23:02:15,366 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4144 transitions. Word has length 149 [2019-10-13 23:02:15,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:15,368 INFO L462 AbstractCegarLoop]: Abstraction has 2762 states and 4144 transitions. [2019-10-13 23:02:15,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4144 transitions. [2019-10-13 23:02:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 23:02:15,372 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:15,373 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:15,581 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:15,581 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:15,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1493364735, now seen corresponding path program 1 times [2019-10-13 23:02:15,582 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:15,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800745219] [2019-10-13 23:02:15,583 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:15,583 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:15,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:02:15,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800745219] [2019-10-13 23:02:15,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118896532] [2019-10-13 23:02:15,803 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 [2019-10-13 23:02:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:16,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 3223 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 23:02:16,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:02:16,692 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:16,896 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:02:16,897 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:16,897 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-10-13 23:02:16,897 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626432274] [2019-10-13 23:02:16,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:16,898 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:16,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:16,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:02:16,899 INFO L87 Difference]: Start difference. First operand 2762 states and 4144 transitions. Second operand 5 states. [2019-10-13 23:02:18,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:18,072 INFO L93 Difference]: Finished difference Result 6991 states and 10932 transitions. [2019-10-13 23:02:18,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:02:18,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-13 23:02:18,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:18,099 INFO L225 Difference]: With dead ends: 6991 [2019-10-13 23:02:18,099 INFO L226 Difference]: Without dead ends: 4266 [2019-10-13 23:02:18,114 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 292 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:02:18,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2019-10-13 23:02:18,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 4205. [2019-10-13 23:02:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4205 states. [2019-10-13 23:02:18,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 6364 transitions. [2019-10-13 23:02:18,308 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 6364 transitions. Word has length 150 [2019-10-13 23:02:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:18,309 INFO L462 AbstractCegarLoop]: Abstraction has 4205 states and 6364 transitions. [2019-10-13 23:02:18,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 6364 transitions. [2019-10-13 23:02:18,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 23:02:18,314 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:18,315 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:18,523 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:18,523 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:18,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:18,524 INFO L82 PathProgramCache]: Analyzing trace with hash 407081665, now seen corresponding path program 1 times [2019-10-13 23:02:18,524 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:18,524 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083795442] [2019-10-13 23:02:18,524 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:18,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:18,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:02:18,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083795442] [2019-10-13 23:02:18,739 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593092057] [2019-10-13 23:02:18,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:19,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-13 23:02:19,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:02:19,596 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:02:19,951 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:19,951 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2019-10-13 23:02:19,951 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871417912] [2019-10-13 23:02:19,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:19,952 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:19,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:19,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:02:19,961 INFO L87 Difference]: Start difference. First operand 4205 states and 6364 transitions. Second operand 7 states. [2019-10-13 23:02:21,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:21,927 INFO L93 Difference]: Finished difference Result 9515 states and 14922 transitions. [2019-10-13 23:02:21,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:02:21,928 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2019-10-13 23:02:21,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:21,961 INFO L225 Difference]: With dead ends: 9515 [2019-10-13 23:02:21,961 INFO L226 Difference]: Without dead ends: 5347 [2019-10-13 23:02:21,979 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 291 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-10-13 23:02:21,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5347 states. [2019-10-13 23:02:22,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5347 to 5301. [2019-10-13 23:02:22,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5301 states. [2019-10-13 23:02:22,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5301 states to 5301 states and 8375 transitions. [2019-10-13 23:02:22,368 INFO L78 Accepts]: Start accepts. Automaton has 5301 states and 8375 transitions. Word has length 151 [2019-10-13 23:02:22,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:22,368 INFO L462 AbstractCegarLoop]: Abstraction has 5301 states and 8375 transitions. [2019-10-13 23:02:22,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:22,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5301 states and 8375 transitions. [2019-10-13 23:02:22,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 23:02:22,373 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:22,373 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:22,581 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:22,581 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:22,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:22,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1057009121, now seen corresponding path program 1 times [2019-10-13 23:02:22,582 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:22,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10708952] [2019-10-13 23:02:22,583 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:22,583 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:22,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:22,818 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:02:22,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10708952] [2019-10-13 23:02:22,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446980529] [2019-10-13 23:02:22,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:23,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 3226 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 23:02:23,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:23,430 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:02:23,430 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:02:23,599 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:02:23,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 8 [2019-10-13 23:02:23,599 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953945000] [2019-10-13 23:02:23,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:23,600 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:23,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:23,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:23,601 INFO L87 Difference]: Start difference. First operand 5301 states and 8375 transitions. Second operand 5 states. [2019-10-13 23:02:23,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:23,798 INFO L93 Difference]: Finished difference Result 10684 states and 17459 transitions. [2019-10-13 23:02:23,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:23,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2019-10-13 23:02:23,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:23,841 INFO L225 Difference]: With dead ends: 10684 [2019-10-13 23:02:23,841 INFO L226 Difference]: Without dead ends: 5433 [2019-10-13 23:02:23,873 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 297 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:23,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2019-10-13 23:02:24,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 5353. [2019-10-13 23:02:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5353 states. [2019-10-13 23:02:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5353 states to 5353 states and 8427 transitions. [2019-10-13 23:02:24,107 INFO L78 Accepts]: Start accepts. Automaton has 5353 states and 8427 transitions. Word has length 151 [2019-10-13 23:02:24,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:24,108 INFO L462 AbstractCegarLoop]: Abstraction has 5353 states and 8427 transitions. [2019-10-13 23:02:24,109 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:24,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5353 states and 8427 transitions. [2019-10-13 23:02:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-13 23:02:24,114 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:24,114 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:24,322 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:24,328 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:24,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1430264882, now seen corresponding path program 1 times [2019-10-13 23:02:24,328 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:24,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98608657] [2019-10-13 23:02:24,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:24,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:24,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:24,501 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:02:24,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98608657] [2019-10-13 23:02:24,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812824320] [2019-10-13 23:02:24,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true