java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:13,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:13,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:13,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:13,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:13,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:13,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:13,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:13,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:13,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:13,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:13,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:13,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:13,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:13,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:13,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:13,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:13,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:13,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:13,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:13,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:13,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:13,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:13,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:13,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:13,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:13,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:13,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:13,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:13,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:13,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:13,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:13,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:13,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:13,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:13,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:13,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:13,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:13,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:13,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:13,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:13,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:09:13,473 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:13,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:13,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:13,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:13,476 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:13,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:13,476 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:13,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:13,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:13,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:13,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:13,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:13,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:13,479 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:13,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:13,479 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:13,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:13,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:13,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:13,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:13,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:13,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:13,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:13,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:13,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:13,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:13,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:13,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:13,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:09:13,855 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:13,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:13,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:13,880 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:13,880 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:13,881 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c [2019-10-15 03:09:13,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aedf96240/69090849e3ed4c718040ca38c10bc25e/FLAG76c37c44d [2019-10-15 03:09:14,899 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:14,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c [2019-10-15 03:09:14,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aedf96240/69090849e3ed4c718040ca38c10bc25e/FLAG76c37c44d [2019-10-15 03:09:15,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aedf96240/69090849e3ed4c718040ca38c10bc25e [2019-10-15 03:09:15,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:15,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:15,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:15,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:15,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:15,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:15" (1/1) ... [2019-10-15 03:09:15,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a8eca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:15, skipping insertion in model container [2019-10-15 03:09:15,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:15" (1/1) ... [2019-10-15 03:09:15,389 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:15,488 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:16,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:16,472 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:16,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:16,783 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:16,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:16 WrapperNode [2019-10-15 03:09:16,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:16,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:16,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:16,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:16,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:16" (1/1) ... [2019-10-15 03:09:16,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:16" (1/1) ... [2019-10-15 03:09:16,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:16" (1/1) ... [2019-10-15 03:09:16,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:16" (1/1) ... [2019-10-15 03:09:16,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:16" (1/1) ... [2019-10-15 03:09:16,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:16" (1/1) ... [2019-10-15 03:09:17,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:16" (1/1) ... [2019-10-15 03:09:17,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:17,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:17,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:17,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:17,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:17,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:17,220 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:17,221 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:17,222 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:17,222 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:17,223 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:17,223 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:17,224 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:17,225 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:17,226 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:17,226 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:17,227 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:17,227 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:17,231 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:17,231 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:17,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:17,232 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:17,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:17,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:17,233 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:17,233 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:17,233 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:17,234 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:17,234 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:17,235 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:17,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:17,235 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:17,236 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:17,236 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:17,237 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:17,237 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:17,237 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:17,238 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:17,238 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:17,239 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:17,241 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:17,241 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:17,241 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:09:17,242 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:09:17,242 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:17,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:17,243 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:17,243 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:09:17,243 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:09:17,244 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:17,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:17,245 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:17,245 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 03:09:17,245 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:17,246 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 03:09:17,246 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:17,246 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:17,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:09:17,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:09:17,247 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:17,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:17,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:17,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:17,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:17,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:17,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:17,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:17,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:17,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:17,254 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:17,254 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:17,254 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:17,254 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:17,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:17,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:17,264 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:17,264 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:17,265 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:17,265 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:17,265 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:09:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:09:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:09:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:09:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:09:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:09:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 03:09:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 03:09:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:09:25,000 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:09:25,000 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:09:25,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:25 BoogieIcfgContainer [2019-10-15 03:09:25,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:09:25,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:09:25,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:09:25,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:09:25,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:15" (1/3) ... [2019-10-15 03:09:25,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2855b8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:25, skipping insertion in model container [2019-10-15 03:09:25,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:16" (2/3) ... [2019-10-15 03:09:25,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2855b8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:25, skipping insertion in model container [2019-10-15 03:09:25,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:25" (3/3) ... [2019-10-15 03:09:25,017 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2019-10-15 03:09:25,028 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:09:25,045 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:09:25,060 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:09:25,124 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:09:25,125 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:09:25,125 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:09:25,125 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:09:25,125 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:09:25,125 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:09:25,125 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:09:25,125 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:09:25,178 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states. [2019-10-15 03:09:25,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-15 03:09:25,195 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:25,197 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:09:25,202 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:25,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:25,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1707992655, now seen corresponding path program 1 times [2019-10-15 03:09:25,219 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:25,220 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274196421] [2019-10-15 03:09:25,220 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:25,220 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:25,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:26,165 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274196421] [2019-10-15 03:09:26,166 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:26,166 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:09:26,167 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020113676] [2019-10-15 03:09:26,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:09:26,175 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:26,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:09:26,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:09:26,197 INFO L87 Difference]: Start difference. First operand 635 states. Second operand 8 states. [2019-10-15 03:09:32,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:32,799 INFO L93 Difference]: Finished difference Result 1838 states and 2790 transitions. [2019-10-15 03:09:32,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:09:32,805 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2019-10-15 03:09:32,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:32,857 INFO L225 Difference]: With dead ends: 1838 [2019-10-15 03:09:32,858 INFO L226 Difference]: Without dead ends: 1331 [2019-10-15 03:09:32,874 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:32,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2019-10-15 03:09:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1321. [2019-10-15 03:09:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2019-10-15 03:09:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1955 transitions. [2019-10-15 03:09:33,103 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1955 transitions. Word has length 80 [2019-10-15 03:09:33,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:33,104 INFO L462 AbstractCegarLoop]: Abstraction has 1321 states and 1955 transitions. [2019-10-15 03:09:33,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:09:33,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1955 transitions. [2019-10-15 03:09:33,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-15 03:09:33,109 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:33,109 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:09:33,110 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:33,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:33,110 INFO L82 PathProgramCache]: Analyzing trace with hash -867389666, now seen corresponding path program 1 times [2019-10-15 03:09:33,111 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:33,111 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514189225] [2019-10-15 03:09:33,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:33,112 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:33,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:09:33,540 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514189225] [2019-10-15 03:09:33,540 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:33,541 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:09:33,541 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111669811] [2019-10-15 03:09:33,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:33,553 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:33,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:33,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:33,554 INFO L87 Difference]: Start difference. First operand 1321 states and 1955 transitions. Second operand 10 states. [2019-10-15 03:09:35,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:35,515 INFO L93 Difference]: Finished difference Result 1349 states and 1989 transitions. [2019-10-15 03:09:35,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 03:09:35,516 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2019-10-15 03:09:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:35,530 INFO L225 Difference]: With dead ends: 1349 [2019-10-15 03:09:35,531 INFO L226 Difference]: Without dead ends: 1346 [2019-10-15 03:09:35,533 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:35,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2019-10-15 03:09:35,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1323. [2019-10-15 03:09:35,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2019-10-15 03:09:35,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1955 transitions. [2019-10-15 03:09:35,622 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1955 transitions. Word has length 81 [2019-10-15 03:09:35,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:35,623 INFO L462 AbstractCegarLoop]: Abstraction has 1323 states and 1955 transitions. [2019-10-15 03:09:35,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:09:35,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1955 transitions. [2019-10-15 03:09:35,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-15 03:09:35,626 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:35,626 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:09:35,626 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:35,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:35,627 INFO L82 PathProgramCache]: Analyzing trace with hash -118771068, now seen corresponding path program 1 times [2019-10-15 03:09:35,627 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:35,627 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419877315] [2019-10-15 03:09:35,627 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:35,628 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:35,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:35,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419877315] [2019-10-15 03:09:35,793 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:35,793 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:09:35,793 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487757923] [2019-10-15 03:09:35,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:35,794 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:35,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:35,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:09:35,795 INFO L87 Difference]: Start difference. First operand 1323 states and 1955 transitions. Second operand 3 states. [2019-10-15 03:09:36,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:36,075 INFO L93 Difference]: Finished difference Result 3790 states and 5715 transitions. [2019-10-15 03:09:36,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:36,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2019-10-15 03:09:36,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:36,100 INFO L225 Difference]: With dead ends: 3790 [2019-10-15 03:09:36,101 INFO L226 Difference]: Without dead ends: 2498 [2019-10-15 03:09:36,110 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:09:36,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2019-10-15 03:09:36,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2430. [2019-10-15 03:09:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2430 states. [2019-10-15 03:09:36,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 3617 transitions. [2019-10-15 03:09:36,255 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 3617 transitions. Word has length 82 [2019-10-15 03:09:36,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:36,256 INFO L462 AbstractCegarLoop]: Abstraction has 2430 states and 3617 transitions. [2019-10-15 03:09:36,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:36,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 3617 transitions. [2019-10-15 03:09:36,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-15 03:09:36,258 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:36,259 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:09:36,259 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:36,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:36,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1972688209, now seen corresponding path program 1 times [2019-10-15 03:09:36,259 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:36,260 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347188685] [2019-10-15 03:09:36,260 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:36,260 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:36,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:09:36,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347188685] [2019-10-15 03:09:36,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854899364] [2019-10-15 03:09:36,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:37,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:37,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:37,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:09:37,793 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:37,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:37,983 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:37,983 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:09:37,983 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102554092] [2019-10-15 03:09:37,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:37,986 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:37,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:37,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:37,987 INFO L87 Difference]: Start difference. First operand 2430 states and 3617 transitions. Second operand 3 states. [2019-10-15 03:09:38,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:38,234 INFO L93 Difference]: Finished difference Result 5316 states and 7993 transitions. [2019-10-15 03:09:38,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:38,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-15 03:09:38,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:38,269 INFO L225 Difference]: With dead ends: 5316 [2019-10-15 03:09:38,270 INFO L226 Difference]: Without dead ends: 2917 [2019-10-15 03:09:38,291 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:38,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2019-10-15 03:09:38,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2861. [2019-10-15 03:09:38,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2861 states. [2019-10-15 03:09:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4271 transitions. [2019-10-15 03:09:38,581 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4271 transitions. Word has length 81 [2019-10-15 03:09:38,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:38,583 INFO L462 AbstractCegarLoop]: Abstraction has 2861 states and 4271 transitions. [2019-10-15 03:09:38,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:38,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4271 transitions. [2019-10-15 03:09:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 03:09:38,599 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:38,600 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:38,814 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:38,814 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:38,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:38,816 INFO L82 PathProgramCache]: Analyzing trace with hash -362378937, now seen corresponding path program 1 times [2019-10-15 03:09:38,816 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:38,817 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915343383] [2019-10-15 03:09:38,817 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:38,818 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:38,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:09:39,304 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915343383] [2019-10-15 03:09:39,304 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735925483] [2019-10-15 03:09:39,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:40,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 3276 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:40,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:40,243 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:40,786 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:40,786 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:09:40,786 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532122741] [2019-10-15 03:09:40,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:40,788 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:40,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:40,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:40,788 INFO L87 Difference]: Start difference. First operand 2861 states and 4271 transitions. Second operand 3 states. [2019-10-15 03:09:41,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:41,061 INFO L93 Difference]: Finished difference Result 6189 states and 9361 transitions. [2019-10-15 03:09:41,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:41,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2019-10-15 03:09:41,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:41,103 INFO L225 Difference]: With dead ends: 6189 [2019-10-15 03:09:41,104 INFO L226 Difference]: Without dead ends: 3359 [2019-10-15 03:09:41,130 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:41,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3359 states. [2019-10-15 03:09:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3359 to 3252. [2019-10-15 03:09:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3252 states. [2019-10-15 03:09:41,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3252 states to 3252 states and 4862 transitions. [2019-10-15 03:09:41,408 INFO L78 Accepts]: Start accepts. Automaton has 3252 states and 4862 transitions. Word has length 128 [2019-10-15 03:09:41,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:41,409 INFO L462 AbstractCegarLoop]: Abstraction has 3252 states and 4862 transitions. [2019-10-15 03:09:41,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:41,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3252 states and 4862 transitions. [2019-10-15 03:09:41,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-15 03:09:41,416 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:41,417 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2019-10-15 03:09:41,629 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:41,630 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:41,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:41,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1052012858, now seen corresponding path program 1 times [2019-10-15 03:09:41,633 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:41,633 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115722010] [2019-10-15 03:09:41,634 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:41,634 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:41,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 03:09:42,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115722010] [2019-10-15 03:09:42,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010471995] [2019-10-15 03:09:42,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:43,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 3875 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 03:09:43,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-15 03:09:43,558 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:44,319 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 03:09:44,592 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:44,593 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 25 [2019-10-15 03:09:44,593 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117211783] [2019-10-15 03:09:44,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:09:44,595 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:44,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:09:44,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2019-10-15 03:09:44,596 INFO L87 Difference]: Start difference. First operand 3252 states and 4862 transitions. Second operand 9 states.