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_spec9_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:54,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:54,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:54,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:54,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:54,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:54,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:54,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:54,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:54,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:54,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:54,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:54,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:54,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:54,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:54,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:54,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:54,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:54,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:54,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:54,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:54,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:54,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:54,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:54,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:54,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:54,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:54,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:54,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:54,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:54,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:54,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:54,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:54,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:54,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:54,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:54,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:54,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:54,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:54,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:54,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:54,476 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 03:09:54,507 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:54,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:54,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:54,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:54,515 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:54,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:54,516 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:54,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:54,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:54,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:54,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:54,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:54,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:54,517 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:54,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:54,520 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:54,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:54,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:54,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:54,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:54,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:54,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:54,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:54,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:54,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:54,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:54,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:54,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:54,524 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 03:09:54,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:54,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:54,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:54,917 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:54,917 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:54,918 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product26.cil.c [2019-10-15 03:09:55,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8077b404c/d7fd5e7da5a44c8d88c62f467a270a27/FLAG8d00e5301 [2019-10-15 03:09:55,864 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:55,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product26.cil.c [2019-10-15 03:09:55,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8077b404c/d7fd5e7da5a44c8d88c62f467a270a27/FLAG8d00e5301 [2019-10-15 03:09:56,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8077b404c/d7fd5e7da5a44c8d88c62f467a270a27 [2019-10-15 03:09:56,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:56,399 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:56,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:56,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:56,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:56,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:56" (1/1) ... [2019-10-15 03:09:56,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421e582d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:56, skipping insertion in model container [2019-10-15 03:09:56,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:56" (1/1) ... [2019-10-15 03:09:56,423 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:56,552 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:57,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:57,506 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:57,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:57,781 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:57,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:57 WrapperNode [2019-10-15 03:09:57,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:57,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:57,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:57,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:57,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:57" (1/1) ... [2019-10-15 03:09:57,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:57" (1/1) ... [2019-10-15 03:09:57,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:57" (1/1) ... [2019-10-15 03:09:57,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:57" (1/1) ... [2019-10-15 03:09:57,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:57" (1/1) ... [2019-10-15 03:09:58,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:57" (1/1) ... [2019-10-15 03:09:58,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:57" (1/1) ... [2019-10-15 03:09:58,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:58,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:58,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:58,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:58,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:57" (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 03:09:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:58,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:58,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:58,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:58,159 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:58,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-15 03:09:58,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-15 03:09:58,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-15 03:09:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-15 03:09:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:58,162 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:58,162 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:58,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:58,162 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:58,162 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:58,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:58,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:58,163 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:58,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:58,163 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:58,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:58,164 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:58,164 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:58,164 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:58,164 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:58,165 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2019-10-15 03:09:58,165 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:58,165 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__empty [2019-10-15 03:09:58,165 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:58,166 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:58,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:58,166 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:58,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:58,166 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:58,166 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:58,167 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:58,167 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:58,167 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:58,167 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:58,167 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:58,169 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:58,169 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:58,169 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:58,169 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:58,170 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:58,170 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:58,170 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:58,170 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:58,170 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-15 03:09:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-15 03:09:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-15 03:09:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-15 03:09:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:58,181 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:58,181 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:58,181 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:58,181 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:58,181 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:58,181 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:58,182 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:58,182 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:58,182 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:58,182 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:58,182 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:58,183 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:58,183 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:58,183 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:58,183 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:58,183 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2019-10-15 03:09:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__empty [2019-10-15 03:09:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:10:04,767 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:10:04,768 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:10:04,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:10:04 BoogieIcfgContainer [2019-10-15 03:10:04,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:10:04,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:10:04,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:10:04,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:10:04,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:56" (1/3) ... [2019-10-15 03:10:04,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c518818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:10:04, skipping insertion in model container [2019-10-15 03:10:04,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:57" (2/3) ... [2019-10-15 03:10:04,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c518818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:10:04, skipping insertion in model container [2019-10-15 03:10:04,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:10:04" (3/3) ... [2019-10-15 03:10:04,777 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product26.cil.c [2019-10-15 03:10:04,786 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:10:04,846 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:10:04,858 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:10:04,887 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:10:04,887 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:10:04,887 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:10:04,887 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:10:04,887 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:10:04,887 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:10:04,888 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:10:04,888 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:10:04,924 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states. [2019-10-15 03:10:04,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-15 03:10:04,939 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:04,940 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:04,943 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:04,949 INFO L82 PathProgramCache]: Analyzing trace with hash 656701151, now seen corresponding path program 1 times [2019-10-15 03:10:04,960 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:04,960 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148552994] [2019-10-15 03:10:04,961 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:04,961 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:04,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:10:05,591 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148552994] [2019-10-15 03:10:05,592 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:05,592 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:10:05,593 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675160304] [2019-10-15 03:10:05,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:10:05,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:05,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:10:05,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:10:05,618 INFO L87 Difference]: Start difference. First operand 555 states. Second operand 2 states. [2019-10-15 03:10:05,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:05,687 INFO L93 Difference]: Finished difference Result 452 states and 672 transitions. [2019-10-15 03:10:05,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:10:05,689 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-15 03:10:05,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:05,715 INFO L225 Difference]: With dead ends: 452 [2019-10-15 03:10:05,716 INFO L226 Difference]: Without dead ends: 418 [2019-10-15 03:10:05,721 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:10:05,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2019-10-15 03:10:05,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2019-10-15 03:10:05,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2019-10-15 03:10:05,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 621 transitions. [2019-10-15 03:10:05,884 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 621 transitions. Word has length 74 [2019-10-15 03:10:05,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:05,886 INFO L462 AbstractCegarLoop]: Abstraction has 418 states and 621 transitions. [2019-10-15 03:10:05,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:10:05,887 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 621 transitions. [2019-10-15 03:10:05,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-15 03:10:05,893 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:05,894 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:05,894 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:05,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:05,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1065118318, now seen corresponding path program 1 times [2019-10-15 03:10:05,895 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:05,895 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815245669] [2019-10-15 03:10:05,895 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:05,895 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:05,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:10:06,344 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815245669] [2019-10-15 03:10:06,345 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:06,345 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:10:06,345 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491992293] [2019-10-15 03:10:06,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:10:06,348 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:06,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:10:06,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:10:06,349 INFO L87 Difference]: Start difference. First operand 418 states and 621 transitions. Second operand 6 states. [2019-10-15 03:10:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:10,347 INFO L93 Difference]: Finished difference Result 1269 states and 1951 transitions. [2019-10-15 03:10:10,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:10:10,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2019-10-15 03:10:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:10,364 INFO L225 Difference]: With dead ends: 1269 [2019-10-15 03:10:10,365 INFO L226 Difference]: Without dead ends: 893 [2019-10-15 03:10:10,371 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:10:10,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2019-10-15 03:10:10,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 798. [2019-10-15 03:10:10,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 798 states. [2019-10-15 03:10:10,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1228 transitions. [2019-10-15 03:10:10,443 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1228 transitions. Word has length 75 [2019-10-15 03:10:10,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:10,444 INFO L462 AbstractCegarLoop]: Abstraction has 798 states and 1228 transitions. [2019-10-15 03:10:10,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:10:10,444 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1228 transitions. [2019-10-15 03:10:10,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-15 03:10:10,450 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:10,450 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:10,451 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:10,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:10,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1830198667, now seen corresponding path program 1 times [2019-10-15 03:10:10,452 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:10,452 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28532989] [2019-10-15 03:10:10,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:10,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:10,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:10:10,727 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28532989] [2019-10-15 03:10:10,727 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:10,727 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:10:10,728 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841074711] [2019-10-15 03:10:10,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:10:10,729 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:10,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:10:10,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:10:10,730 INFO L87 Difference]: Start difference. First operand 798 states and 1228 transitions. Second operand 8 states. [2019-10-15 03:10:10,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:10,897 INFO L93 Difference]: Finished difference Result 1647 states and 2585 transitions. [2019-10-15 03:10:10,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:10:10,898 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-10-15 03:10:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:10,910 INFO L225 Difference]: With dead ends: 1647 [2019-10-15 03:10:10,910 INFO L226 Difference]: Without dead ends: 892 [2019-10-15 03:10:10,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:10:10,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2019-10-15 03:10:10,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 806. [2019-10-15 03:10:10,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2019-10-15 03:10:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1236 transitions. [2019-10-15 03:10:10,998 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1236 transitions. Word has length 103 [2019-10-15 03:10:10,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:10,999 INFO L462 AbstractCegarLoop]: Abstraction has 806 states and 1236 transitions. [2019-10-15 03:10:10,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:10:10,999 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1236 transitions. [2019-10-15 03:10:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-15 03:10:11,004 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:11,004 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:11,004 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:11,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:11,005 INFO L82 PathProgramCache]: Analyzing trace with hash -856895825, now seen corresponding path program 1 times [2019-10-15 03:10:11,005 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:11,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116926458] [2019-10-15 03:10:11,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:11,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:11,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:10:11,396 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116926458] [2019-10-15 03:10:11,396 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:11,396 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:10:11,397 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208318294] [2019-10-15 03:10:11,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:10:11,397 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:11,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:10:11,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:10:11,398 INFO L87 Difference]: Start difference. First operand 806 states and 1236 transitions. Second operand 5 states. [2019-10-15 03:10:11,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:11,488 INFO L93 Difference]: Finished difference Result 1581 states and 2452 transitions. [2019-10-15 03:10:11,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:10:11,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2019-10-15 03:10:11,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:11,496 INFO L225 Difference]: With dead ends: 1581 [2019-10-15 03:10:11,496 INFO L226 Difference]: Without dead ends: 818 [2019-10-15 03:10:11,500 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:10:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2019-10-15 03:10:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 814. [2019-10-15 03:10:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2019-10-15 03:10:11,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1246 transitions. [2019-10-15 03:10:11,546 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1246 transitions. Word has length 107 [2019-10-15 03:10:11,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:11,547 INFO L462 AbstractCegarLoop]: Abstraction has 814 states and 1246 transitions. [2019-10-15 03:10:11,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:10:11,547 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1246 transitions. [2019-10-15 03:10:11,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:10:11,551 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:11,552 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:11,552 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:11,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:11,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1146873374, now seen corresponding path program 1 times [2019-10-15 03:10:11,553 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:11,553 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269211395] [2019-10-15 03:10:11,553 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:11,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:11,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:10:11,852 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269211395] [2019-10-15 03:10:11,852 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:11,853 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:10:11,853 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308217412] [2019-10-15 03:10:11,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:10:11,854 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:11,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:10:11,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:10:11,855 INFO L87 Difference]: Start difference. First operand 814 states and 1246 transitions. Second operand 12 states. [2019-10-15 03:10:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:25,286 INFO L93 Difference]: Finished difference Result 2421 states and 3726 transitions. [2019-10-15 03:10:25,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 03:10:25,288 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 110 [2019-10-15 03:10:25,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:25,308 INFO L225 Difference]: With dead ends: 2421 [2019-10-15 03:10:25,309 INFO L226 Difference]: Without dead ends: 1649 [2019-10-15 03:10:25,321 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-15 03:10:25,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2019-10-15 03:10:25,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1590. [2019-10-15 03:10:25,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2019-10-15 03:10:25,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2427 transitions. [2019-10-15 03:10:25,477 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2427 transitions. Word has length 110 [2019-10-15 03:10:25,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:25,478 INFO L462 AbstractCegarLoop]: Abstraction has 1590 states and 2427 transitions. [2019-10-15 03:10:25,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:10:25,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2427 transitions. [2019-10-15 03:10:25,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-15 03:10:25,489 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:25,490 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:25,492 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:25,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:25,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1346215111, now seen corresponding path program 1 times [2019-10-15 03:10:25,493 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:25,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016263154] [2019-10-15 03:10:25,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:25,494 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:25,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:10:25,840 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016263154] [2019-10-15 03:10:25,842 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:25,842 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:10:25,842 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142733941] [2019-10-15 03:10:25,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:10:25,843 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:25,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:10:25,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:10:25,844 INFO L87 Difference]: Start difference. First operand 1590 states and 2427 transitions. Second operand 6 states. [2019-10-15 03:10:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:30,876 INFO L93 Difference]: Finished difference Result 5339 states and 8199 transitions. [2019-10-15 03:10:30,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:10:30,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2019-10-15 03:10:30,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:30,909 INFO L225 Difference]: With dead ends: 5339 [2019-10-15 03:10:30,909 INFO L226 Difference]: Without dead ends: 3793 [2019-10-15 03:10:30,921 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:10:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2019-10-15 03:10:31,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3759. [2019-10-15 03:10:31,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3759 states. [2019-10-15 03:10:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5690 transitions. [2019-10-15 03:10:31,170 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5690 transitions. Word has length 111 [2019-10-15 03:10:31,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:31,170 INFO L462 AbstractCegarLoop]: Abstraction has 3759 states and 5690 transitions. [2019-10-15 03:10:31,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:10:31,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5690 transitions. [2019-10-15 03:10:31,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:10:31,174 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:31,175 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:10:31,175 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:31,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:31,176 INFO L82 PathProgramCache]: Analyzing trace with hash -642163230, now seen corresponding path program 1 times [2019-10-15 03:10:31,176 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:31,176 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167068142] [2019-10-15 03:10:31,176 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:31,177 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:31,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:10:31,354 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167068142] [2019-10-15 03:10:31,354 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:31,354 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:31,354 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942326430] [2019-10-15 03:10:31,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:31,355 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:31,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:31,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:31,356 INFO L87 Difference]: Start difference. First operand 3759 states and 5690 transitions. Second operand 3 states. [2019-10-15 03:10:31,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:31,821 INFO L93 Difference]: Finished difference Result 9557 states and 14696 transitions. [2019-10-15 03:10:31,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:31,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-15 03:10:31,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:31,866 INFO L225 Difference]: With dead ends: 9557 [2019-10-15 03:10:31,867 INFO L226 Difference]: Without dead ends: 5840 [2019-10-15 03:10:31,893 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 03:10:31,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5840 states. [2019-10-15 03:10:32,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5840 to 5793. [2019-10-15 03:10:32,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5793 states. [2019-10-15 03:10:32,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 8861 transitions. [2019-10-15 03:10:32,349 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 8861 transitions. Word has length 119 [2019-10-15 03:10:32,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:32,350 INFO L462 AbstractCegarLoop]: Abstraction has 5793 states and 8861 transitions. [2019-10-15 03:10:32,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:32,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 8861 transitions. [2019-10-15 03:10:32,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:10:32,355 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:32,355 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:32,355 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:32,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:32,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1566480303, now seen corresponding path program 1 times [2019-10-15 03:10:32,356 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:32,356 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991010279] [2019-10-15 03:10:32,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:32,357 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:32,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:32,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:10:32,540 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991010279] [2019-10-15 03:10:32,540 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:32,540 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:32,541 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638507822] [2019-10-15 03:10:32,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:32,542 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:32,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:32,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:32,542 INFO L87 Difference]: Start difference. First operand 5793 states and 8861 transitions. Second operand 3 states. [2019-10-15 03:10:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:32,931 INFO L93 Difference]: Finished difference Result 15660 states and 24495 transitions. [2019-10-15 03:10:32,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:32,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2019-10-15 03:10:32,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:32,997 INFO L225 Difference]: With dead ends: 15660 [2019-10-15 03:10:32,998 INFO L226 Difference]: Without dead ends: 9910 [2019-10-15 03:10:33,027 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 03:10:33,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9910 states. [2019-10-15 03:10:33,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9910 to 9862. [2019-10-15 03:10:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9862 states. [2019-10-15 03:10:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9862 states to 9862 states and 15350 transitions. [2019-10-15 03:10:33,699 INFO L78 Accepts]: Start accepts. Automaton has 9862 states and 15350 transitions. Word has length 120 [2019-10-15 03:10:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:33,700 INFO L462 AbstractCegarLoop]: Abstraction has 9862 states and 15350 transitions. [2019-10-15 03:10:33,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:33,700 INFO L276 IsEmpty]: Start isEmpty. Operand 9862 states and 15350 transitions. [2019-10-15 03:10:33,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:10:33,705 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:33,705 INFO L380 BasicCegarLoop]: trace histogram [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 03:10:33,705 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:33,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:33,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1314956996, now seen corresponding path program 1 times [2019-10-15 03:10:33,706 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:33,706 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750268821] [2019-10-15 03:10:33,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:33,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:33,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:10:33,862 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750268821] [2019-10-15 03:10:33,863 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:33,863 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:33,863 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716022298] [2019-10-15 03:10:33,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:33,864 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:33,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:33,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:33,865 INFO L87 Difference]: Start difference. First operand 9862 states and 15350 transitions. Second operand 3 states.