/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:08:54,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:08:54,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:08:54,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:08:54,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:08:54,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:08:54,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:08:54,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:08:54,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:08:54,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:08:54,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:08:54,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:08:54,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:08:54,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:08:54,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:08:54,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:08:54,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:08:54,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:08:54,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:08:54,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:08:54,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:08:54,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:08:54,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:08:54,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:08:54,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:08:54,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:08:54,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:08:54,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:08:54,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:08:54,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:08:54,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:08:54,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:08:54,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:08:54,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:08:54,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:08:54,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:08:54,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:08:54,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:08:54,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:08:54,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:08:54,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:08:54,156 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:08:54,170 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:08:54,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:08:54,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:08:54,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:08:54,171 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:08:54,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:08:54,172 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:08:54,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:08:54,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:08:54,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:08:54,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:08:54,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:08:54,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:08:54,173 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:08:54,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:08:54,174 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:08:54,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:08:54,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:08:54,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:08:54,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:08:54,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:08:54,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:08:54,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:08:54,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:08:54,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:08:54,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:08:54,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:08:54,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:08:54,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:08:54,472 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:08:54,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:08:54,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:08:54,497 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:08:54,498 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:08:54,498 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product24.cil.c [2019-11-07 04:08:54,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec04c3365/3408f0c249bb48b8bffa65b6f542b8d0/FLAG7cfec2325 [2019-11-07 04:08:55,227 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:08:55,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product24.cil.c [2019-11-07 04:08:55,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec04c3365/3408f0c249bb48b8bffa65b6f542b8d0/FLAG7cfec2325 [2019-11-07 04:08:55,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec04c3365/3408f0c249bb48b8bffa65b6f542b8d0 [2019-11-07 04:08:55,429 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:08:55,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:08:55,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:08:55,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:08:55,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:08:55,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:08:55" (1/1) ... [2019-11-07 04:08:55,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff4b5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:55, skipping insertion in model container [2019-11-07 04:08:55,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:08:55" (1/1) ... [2019-11-07 04:08:55,448 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:08:55,533 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:08:56,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:08:56,321 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:08:56,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:08:56,572 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:08:56,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:56 WrapperNode [2019-11-07 04:08:56,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:08:56,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:08:56,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:08:56,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:08:56,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:56" (1/1) ... [2019-11-07 04:08:56,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:56" (1/1) ... [2019-11-07 04:08:56,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:56" (1/1) ... [2019-11-07 04:08:56,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:56" (1/1) ... [2019-11-07 04:08:56,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:56" (1/1) ... [2019-11-07 04:08:56,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:56" (1/1) ... [2019-11-07 04:08:56,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:56" (1/1) ... [2019-11-07 04:08:56,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:08:56,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:08:56,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:08:56,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:08:56,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:08:56,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:08:56,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:08:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:08:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:08:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:08:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:08:56,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:08:56,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:08:56,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:08:56,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:08:56,873 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:08:56,873 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:08:56,873 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:08:56,873 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:08:56,873 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:08:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:08:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:08:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:08:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:08:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:08:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:08:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:08:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:08:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:08:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:08:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:08:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:08:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:08:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:08:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:08:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:08:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:08:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:08:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:08:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:08:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:08:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:08:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:08:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:08:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:08:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:08:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:08:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:08:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:08:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:08:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:08:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:08:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:08:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:08:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:08:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:08:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 04:08:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 04:08:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:08:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:08:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:08:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 04:08:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 04:08:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:08:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:08:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:08:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-11-07 04:08:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:08:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-11-07 04:08:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:08:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:08:56,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:08:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:08:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:08:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:08:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:08:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-07 04:08:56,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-07 04:08:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-07 04:08:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:08:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:08:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:08:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:08:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:08:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:08:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:08:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:08:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:08:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:08:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:08:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:08:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:08:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:08:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:08:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:08:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:08:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:08:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:08:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:08:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:08:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:08:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:08:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:08:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:08:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:08:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:08:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:08:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:08:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:08:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:08:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:08:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:08:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:08:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:08:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:08:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:08:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:08:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:08:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:08:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:08:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:08:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-07 04:08:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:08:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:08:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:08:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:08:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:08:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:08:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:08:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:08:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:08:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:08:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:08:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:08:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:08:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-07 04:08:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:08:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:08:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:08:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:08:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:08:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:08:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:08:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:08:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:08:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:08:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:08:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:08:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:08:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:08:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:08:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:08:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:08:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:08:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:08:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 04:08:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 04:08:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:08:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:08:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 04:08:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 04:08:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:08:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:08:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:08:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-11-07 04:08:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-07 04:08:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-11-07 04:08:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:08:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:08:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:08:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:08:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:08:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:08:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:09:02,015 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:09:02,015 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:09:02,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:09:02 BoogieIcfgContainer [2019-11-07 04:09:02,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:09:02,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:09:02,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:09:02,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:09:02,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:08:55" (1/3) ... [2019-11-07 04:09:02,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5845e960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:09:02, skipping insertion in model container [2019-11-07 04:09:02,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:56" (2/3) ... [2019-11-07 04:09:02,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5845e960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:09:02, skipping insertion in model container [2019-11-07 04:09:02,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:09:02" (3/3) ... [2019-11-07 04:09:02,025 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product24.cil.c [2019-11-07 04:09:02,034 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:09:02,043 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:09:02,055 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:09:02,087 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:09:02,087 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:09:02,087 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:09:02,087 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:09:02,088 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:09:02,088 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:09:02,088 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:09:02,088 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:09:02,123 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states. [2019-11-07 04:09:02,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 04:09:02,137 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:02,139 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:09:02,141 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:02,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:02,151 INFO L82 PathProgramCache]: Analyzing trace with hash 167046203, now seen corresponding path program 1 times [2019-11-07 04:09:02,162 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:02,162 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921166106] [2019-11-07 04:09:02,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:02,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:09:02,896 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921166106] [2019-11-07 04:09:02,897 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:02,897 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:09:02,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158404949] [2019-11-07 04:09:02,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:09:02,906 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:02,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:09:02,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:09:02,923 INFO L87 Difference]: Start difference. First operand 610 states. Second operand 2 states. [2019-11-07 04:09:03,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:03,045 INFO L93 Difference]: Finished difference Result 513 states and 757 transitions. [2019-11-07 04:09:03,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:09:03,046 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 97 [2019-11-07 04:09:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:03,089 INFO L225 Difference]: With dead ends: 513 [2019-11-07 04:09:03,089 INFO L226 Difference]: Without dead ends: 479 [2019-11-07 04:09:03,098 INFO L630 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 [2019-11-07 04:09:03,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2019-11-07 04:09:03,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2019-11-07 04:09:03,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2019-11-07 04:09:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 706 transitions. [2019-11-07 04:09:03,246 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 706 transitions. Word has length 97 [2019-11-07 04:09:03,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:03,249 INFO L462 AbstractCegarLoop]: Abstraction has 479 states and 706 transitions. [2019-11-07 04:09:03,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:09:03,249 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 706 transitions. [2019-11-07 04:09:03,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-07 04:09:03,262 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:03,262 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:09:03,263 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:03,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:03,263 INFO L82 PathProgramCache]: Analyzing trace with hash 697325300, now seen corresponding path program 1 times [2019-11-07 04:09:03,263 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:03,264 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297537369] [2019-11-07 04:09:03,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:09:03,738 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297537369] [2019-11-07 04:09:03,739 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:03,739 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:09:03,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581436793] [2019-11-07 04:09:03,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:09:03,744 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:03,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:09:03,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:09:03,745 INFO L87 Difference]: Start difference. First operand 479 states and 706 transitions. Second operand 9 states. [2019-11-07 04:09:10,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:10,213 INFO L93 Difference]: Finished difference Result 1298 states and 1960 transitions. [2019-11-07 04:09:10,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 04:09:10,215 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2019-11-07 04:09:10,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:10,230 INFO L225 Difference]: With dead ends: 1298 [2019-11-07 04:09:10,230 INFO L226 Difference]: Without dead ends: 872 [2019-11-07 04:09:10,246 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-11-07 04:09:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2019-11-07 04:09:10,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 841. [2019-11-07 04:09:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2019-11-07 04:09:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1228 transitions. [2019-11-07 04:09:10,364 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1228 transitions. Word has length 98 [2019-11-07 04:09:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:10,366 INFO L462 AbstractCegarLoop]: Abstraction has 841 states and 1228 transitions. [2019-11-07 04:09:10,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:09:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1228 transitions. [2019-11-07 04:09:10,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-07 04:09:10,371 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:10,372 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:09:10,372 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:10,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:10,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1082098819, now seen corresponding path program 1 times [2019-11-07 04:09:10,373 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:10,374 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506377223] [2019-11-07 04:09:10,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:09:10,732 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506377223] [2019-11-07 04:09:10,732 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:10,732 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:09:10,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424017823] [2019-11-07 04:09:10,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:09:10,734 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:10,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:09:10,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:09:10,735 INFO L87 Difference]: Start difference. First operand 841 states and 1228 transitions. Second operand 3 states. [2019-11-07 04:09:10,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:10,866 INFO L93 Difference]: Finished difference Result 2409 states and 3567 transitions. [2019-11-07 04:09:10,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:09:10,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2019-11-07 04:09:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:10,887 INFO L225 Difference]: With dead ends: 2409 [2019-11-07 04:09:10,887 INFO L226 Difference]: Without dead ends: 1623 [2019-11-07 04:09:10,894 INFO L630 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 [2019-11-07 04:09:10,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2019-11-07 04:09:11,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1616. [2019-11-07 04:09:11,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1616 states. [2019-11-07 04:09:11,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2384 transitions. [2019-11-07 04:09:11,082 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2384 transitions. Word has length 99 [2019-11-07 04:09:11,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:11,083 INFO L462 AbstractCegarLoop]: Abstraction has 1616 states and 2384 transitions. [2019-11-07 04:09:11,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:09:11,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2384 transitions. [2019-11-07 04:09:11,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-07 04:09:11,090 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:11,091 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:09:11,091 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:11,091 INFO L82 PathProgramCache]: Analyzing trace with hash 814303691, now seen corresponding path program 1 times [2019-11-07 04:09:11,091 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:11,092 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443849666] [2019-11-07 04:09:11,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:09:11,423 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443849666] [2019-11-07 04:09:11,423 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:11,424 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:09:11,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750952435] [2019-11-07 04:09:11,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:09:11,425 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:11,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:09:11,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:09:11,426 INFO L87 Difference]: Start difference. First operand 1616 states and 2384 transitions. Second operand 6 states. [2019-11-07 04:09:14,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:14,592 INFO L93 Difference]: Finished difference Result 5129 states and 7717 transitions. [2019-11-07 04:09:14,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:09:14,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2019-11-07 04:09:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:14,634 INFO L225 Difference]: With dead ends: 5129 [2019-11-07 04:09:14,634 INFO L226 Difference]: Without dead ends: 3569 [2019-11-07 04:09:14,644 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:09:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2019-11-07 04:09:14,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 3258. [2019-11-07 04:09:14,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3258 states. [2019-11-07 04:09:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3258 states to 3258 states and 4895 transitions. [2019-11-07 04:09:14,886 INFO L78 Accepts]: Start accepts. Automaton has 3258 states and 4895 transitions. Word has length 100 [2019-11-07 04:09:14,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:14,888 INFO L462 AbstractCegarLoop]: Abstraction has 3258 states and 4895 transitions. [2019-11-07 04:09:14,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:09:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3258 states and 4895 transitions. [2019-11-07 04:09:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-07 04:09:14,895 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:14,895 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:09:14,895 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:14,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:14,896 INFO L82 PathProgramCache]: Analyzing trace with hash -304140986, now seen corresponding path program 1 times [2019-11-07 04:09:14,896 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:14,896 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714319336] [2019-11-07 04:09:14,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 04:09:15,229 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714319336] [2019-11-07 04:09:15,229 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:15,230 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:09:15,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702430107] [2019-11-07 04:09:15,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:09:15,232 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:15,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:09:15,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:09:15,234 INFO L87 Difference]: Start difference. First operand 3258 states and 4895 transitions. Second operand 7 states. [2019-11-07 04:09:19,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:19,032 INFO L93 Difference]: Finished difference Result 8025 states and 12049 transitions. [2019-11-07 04:09:19,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:09:19,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2019-11-07 04:09:19,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:19,074 INFO L225 Difference]: With dead ends: 8025 [2019-11-07 04:09:19,075 INFO L226 Difference]: Without dead ends: 4826 [2019-11-07 04:09:19,093 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:09:19,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2019-11-07 04:09:19,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4739. [2019-11-07 04:09:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4739 states. [2019-11-07 04:09:19,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4739 states to 4739 states and 7072 transitions. [2019-11-07 04:09:19,407 INFO L78 Accepts]: Start accepts. Automaton has 4739 states and 7072 transitions. Word has length 146 [2019-11-07 04:09:19,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:19,411 INFO L462 AbstractCegarLoop]: Abstraction has 4739 states and 7072 transitions. [2019-11-07 04:09:19,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:09:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 4739 states and 7072 transitions. [2019-11-07 04:09:19,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 04:09:19,418 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:19,418 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:09:19,418 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:19,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:19,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2131483078, now seen corresponding path program 1 times [2019-11-07 04:09:19,420 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:19,420 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890875836] [2019-11-07 04:09:19,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:19,759 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 04:09:19,759 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890875836] [2019-11-07 04:09:19,760 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:19,761 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 04:09:19,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659297289] [2019-11-07 04:09:19,762 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 04:09:19,762 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:19,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 04:09:19,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:09:19,763 INFO L87 Difference]: Start difference. First operand 4739 states and 7072 transitions. Second operand 12 states. [2019-11-07 04:09:28,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:28,178 INFO L93 Difference]: Finished difference Result 13002 states and 19310 transitions. [2019-11-07 04:09:28,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-07 04:09:28,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2019-11-07 04:09:28,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:28,231 INFO L225 Difference]: With dead ends: 13002 [2019-11-07 04:09:28,231 INFO L226 Difference]: Without dead ends: 8318 [2019-11-07 04:09:28,255 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-11-07 04:09:28,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8318 states.