/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_spec9_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:13:09,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:13:09,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:13:09,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:13:09,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:13:09,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:13:09,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:13:09,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:13:09,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:13:09,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:13:09,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:13:09,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:13:09,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:13:09,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:13:09,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:13:09,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:13:09,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:13:09,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:13:09,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:13:09,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:13:09,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:13:09,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:13:09,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:13:09,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:13:09,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:13:09,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:13:09,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:13:09,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:13:09,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:13:09,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:13:09,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:13:09,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:13:09,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:13:09,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:13:09,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:13:09,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:13:09,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:13:09,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:13:09,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:13:09,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:13:09,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:13:09,615 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 04:13:09,630 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:13:09,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:13:09,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:13:09,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:13:09,631 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:13:09,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:13:09,632 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:13:09,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:13:09,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:13:09,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:13:09,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:13:09,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:13:09,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:13:09,633 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:13:09,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:13:09,634 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:13:09,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:13:09,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:13:09,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:13:09,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:13:09,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:13:09,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:13:09,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:13:09,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:13:09,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:13:09,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:13:09,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:13:09,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:13:09,636 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 04:13:09,953 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:13:09,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:13:09,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:13:09,977 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:13:09,978 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:13:09,979 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product29.cil.c [2019-11-07 04:13:10,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b222f592/6f60ed7bf85b41118616863bb973f688/FLAG57f0e8a12 [2019-11-07 04:13:10,743 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:13:10,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product29.cil.c [2019-11-07 04:13:10,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b222f592/6f60ed7bf85b41118616863bb973f688/FLAG57f0e8a12 [2019-11-07 04:13:10,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b222f592/6f60ed7bf85b41118616863bb973f688 [2019-11-07 04:13:10,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:13:10,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:13:10,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:13:10,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:13:10,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:13:10,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:13:10" (1/1) ... [2019-11-07 04:13:10,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186ced83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:10, skipping insertion in model container [2019-11-07 04:13:10,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:13:10" (1/1) ... [2019-11-07 04:13:10,905 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:13:11,069 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:13:11,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:13:11,886 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:13:12,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:13:12,107 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:13:12,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:12 WrapperNode [2019-11-07 04:13:12,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:13:12,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:13:12,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:13:12,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:13:12,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:12" (1/1) ... [2019-11-07 04:13:12,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:12" (1/1) ... [2019-11-07 04:13:12,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:12" (1/1) ... [2019-11-07 04:13:12,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:12" (1/1) ... [2019-11-07 04:13:12,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:12" (1/1) ... [2019-11-07 04:13:12,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:12" (1/1) ... [2019-11-07 04:13:12,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:12" (1/1) ... [2019-11-07 04:13:12,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:13:12,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:13:12,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:13:12,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:13:12,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:12" (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 04:13:12,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:13:12,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:13:12,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:13:12,423 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:13:12,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:13:12,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-11-07 04:13:12,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-11-07 04:13:12,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-11-07 04:13:12,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-11-07 04:13:12,426 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:13:12,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:13:12,427 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:13:12,427 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:13:12,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:13:12,428 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:13:12,428 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:13:12,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:13:12,431 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:13:12,432 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:13:12,432 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:13:12,432 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:13:12,432 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:13:12,433 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:13:12,433 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:13:12,433 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:13:12,433 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:13:12,433 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:13:12,434 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:13:12,434 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:13:12,434 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:13:12,434 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:13:12,435 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:13:12,435 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:13:12,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:13:12,435 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:13:12,435 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:13:12,436 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:13:12,436 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:13:12,436 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:13:12,436 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:13:12,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:13:12,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:13:12,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:13:12,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:13:12,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:13:12,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:13:12,437 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:13:12,437 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:13:12,438 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:13:12,438 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:13:12,438 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:13:12,438 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:13:12,438 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 04:13:12,439 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:13:12,439 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:13:12,439 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:13:12,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:13:12,439 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:13:12,440 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:13:12,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:13:12,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:13:12,440 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:13:12,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:13:12,441 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:13:12,441 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:13:12,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:13:12,441 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:13:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:13:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:13:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:13:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:13:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:13:12,442 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:13:12,443 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:13:12,443 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:13:12,444 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:13:12,444 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:13:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:13:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:13:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:13:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:13:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:13:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:13:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:13:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:13:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:13:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-11-07 04:13:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-11-07 04:13:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-11-07 04:13:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-11-07 04:13:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:13:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:13:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:13:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:13:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:13:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:13:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:13:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:13:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:13:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:13:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:13:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:13:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:13:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:13:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:13:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:13:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:13:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:13:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:13:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:13:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:13:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:13:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:13:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:13:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:13:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:13:12,453 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:13:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:13:12,454 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:13:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:13:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:13:12,455 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:13:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:13:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:13:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:13:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:13:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:13:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:13:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:13:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:13:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:13:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:13:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:13:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:13:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:13:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:13:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:13:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:13:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:13:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:13:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:13:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:13:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:13:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:13:12,473 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:13:12,473 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:13:12,473 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:13:12,473 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:13:12,473 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:13:12,474 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:13:12,475 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:13:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:13:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 04:13:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:13:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:13:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:13:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:13:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:13:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:13:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:13:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:13:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:13:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:13:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:13:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:13:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:13:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:13:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:13:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:13:17,541 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:13:17,542 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:13:17,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:13:17 BoogieIcfgContainer [2019-11-07 04:13:17,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:13:17,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:13:17,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:13:17,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:13:17,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:13:10" (1/3) ... [2019-11-07 04:13:17,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b00490b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:13:17, skipping insertion in model container [2019-11-07 04:13:17,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:12" (2/3) ... [2019-11-07 04:13:17,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b00490b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:13:17, skipping insertion in model container [2019-11-07 04:13:17,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:13:17" (3/3) ... [2019-11-07 04:13:17,550 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product29.cil.c [2019-11-07 04:13:17,559 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:13:17,570 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:13:17,582 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:13:17,612 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:13:17,612 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:13:17,612 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:13:17,612 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:13:17,613 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:13:17,613 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:13:17,613 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:13:17,613 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:13:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states. [2019-11-07 04:13:17,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-07 04:13:17,664 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:17,665 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:17,667 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:17,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:17,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1755162486, now seen corresponding path program 1 times [2019-11-07 04:13:17,682 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:17,682 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030559896] [2019-11-07 04:13:17,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:13:18,470 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030559896] [2019-11-07 04:13:18,470 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:18,471 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:13:18,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527972200] [2019-11-07 04:13:18,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:13:18,477 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:18,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:13:18,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:13:18,495 INFO L87 Difference]: Start difference. First operand 565 states. Second operand 9 states. [2019-11-07 04:13:23,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:23,841 INFO L93 Difference]: Finished difference Result 1388 states and 2117 transitions. [2019-11-07 04:13:23,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-07 04:13:23,843 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2019-11-07 04:13:23,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:23,888 INFO L225 Difference]: With dead ends: 1388 [2019-11-07 04:13:23,888 INFO L226 Difference]: Without dead ends: 971 [2019-11-07 04:13:23,903 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-11-07 04:13:23,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2019-11-07 04:13:24,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 939. [2019-11-07 04:13:24,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2019-11-07 04:13:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1428 transitions. [2019-11-07 04:13:24,123 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1428 transitions. Word has length 106 [2019-11-07 04:13:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:24,124 INFO L462 AbstractCegarLoop]: Abstraction has 939 states and 1428 transitions. [2019-11-07 04:13:24,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:13:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1428 transitions. [2019-11-07 04:13:24,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-07 04:13:24,131 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:24,132 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:24,132 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:24,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:24,132 INFO L82 PathProgramCache]: Analyzing trace with hash -536835171, now seen corresponding path program 1 times [2019-11-07 04:13:24,133 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:24,133 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907236385] [2019-11-07 04:13:24,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:13:24,377 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907236385] [2019-11-07 04:13:24,377 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:24,378 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:13:24,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59984273] [2019-11-07 04:13:24,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:13:24,385 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:24,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:13:24,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:13:24,386 INFO L87 Difference]: Start difference. First operand 939 states and 1428 transitions. Second operand 7 states. [2019-11-07 04:13:24,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:24,503 INFO L93 Difference]: Finished difference Result 1503 states and 2301 transitions. [2019-11-07 04:13:24,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:13:24,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2019-11-07 04:13:24,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:24,513 INFO L225 Difference]: With dead ends: 1503 [2019-11-07 04:13:24,513 INFO L226 Difference]: Without dead ends: 976 [2019-11-07 04:13:24,517 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:13:24,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2019-11-07 04:13:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 960. [2019-11-07 04:13:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2019-11-07 04:13:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1458 transitions. [2019-11-07 04:13:24,595 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1458 transitions. Word has length 111 [2019-11-07 04:13:24,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:24,596 INFO L462 AbstractCegarLoop]: Abstraction has 960 states and 1458 transitions. [2019-11-07 04:13:24,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:13:24,596 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1458 transitions. [2019-11-07 04:13:24,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-07 04:13:24,601 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:24,602 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:24,602 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:24,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:24,603 INFO L82 PathProgramCache]: Analyzing trace with hash 444756279, now seen corresponding path program 1 times [2019-11-07 04:13:24,603 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:24,603 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90351660] [2019-11-07 04:13:24,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:13:24,911 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90351660] [2019-11-07 04:13:24,911 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:24,911 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:13:24,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534709877] [2019-11-07 04:13:24,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:13:24,913 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:24,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:13:24,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:13:24,913 INFO L87 Difference]: Start difference. First operand 960 states and 1458 transitions. Second operand 7 states. [2019-11-07 04:13:25,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:25,043 INFO L93 Difference]: Finished difference Result 1532 states and 2339 transitions. [2019-11-07 04:13:25,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:13:25,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-11-07 04:13:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:25,052 INFO L225 Difference]: With dead ends: 1532 [2019-11-07 04:13:25,052 INFO L226 Difference]: Without dead ends: 991 [2019-11-07 04:13:25,056 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:13:25,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2019-11-07 04:13:25,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 963. [2019-11-07 04:13:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2019-11-07 04:13:25,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1461 transitions. [2019-11-07 04:13:25,116 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1461 transitions. Word has length 112 [2019-11-07 04:13:25,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:25,116 INFO L462 AbstractCegarLoop]: Abstraction has 963 states and 1461 transitions. [2019-11-07 04:13:25,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:13:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1461 transitions. [2019-11-07 04:13:25,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-07 04:13:25,120 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:25,120 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:25,120 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:25,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:25,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1911377751, now seen corresponding path program 1 times [2019-11-07 04:13:25,121 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:25,121 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467137327] [2019-11-07 04:13:25,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:13:25,293 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467137327] [2019-11-07 04:13:25,293 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:25,294 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:13:25,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707019810] [2019-11-07 04:13:25,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:13:25,295 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:25,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:13:25,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:13:25,295 INFO L87 Difference]: Start difference. First operand 963 states and 1461 transitions. Second operand 7 states. [2019-11-07 04:13:25,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:25,388 INFO L93 Difference]: Finished difference Result 1537 states and 2344 transitions. [2019-11-07 04:13:25,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:13:25,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-11-07 04:13:25,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:25,401 INFO L225 Difference]: With dead ends: 1537 [2019-11-07 04:13:25,401 INFO L226 Difference]: Without dead ends: 994 [2019-11-07 04:13:25,404 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:13:25,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2019-11-07 04:13:25,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 966. [2019-11-07 04:13:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2019-11-07 04:13:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1464 transitions. [2019-11-07 04:13:25,472 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1464 transitions. Word has length 112 [2019-11-07 04:13:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:25,473 INFO L462 AbstractCegarLoop]: Abstraction has 966 states and 1464 transitions. [2019-11-07 04:13:25,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:13:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1464 transitions. [2019-11-07 04:13:25,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-07 04:13:25,478 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:25,478 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:25,478 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:25,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:25,479 INFO L82 PathProgramCache]: Analyzing trace with hash -505526049, now seen corresponding path program 1 times [2019-11-07 04:13:25,479 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:25,479 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300701132] [2019-11-07 04:13:25,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:13:25,788 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300701132] [2019-11-07 04:13:25,789 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:25,789 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:13:25,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516762823] [2019-11-07 04:13:25,790 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:13:25,790 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:25,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:13:25,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:13:25,792 INFO L87 Difference]: Start difference. First operand 966 states and 1464 transitions. Second operand 7 states. [2019-11-07 04:13:29,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:29,890 INFO L93 Difference]: Finished difference Result 2072 states and 3161 transitions. [2019-11-07 04:13:29,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:13:29,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-11-07 04:13:29,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:29,905 INFO L225 Difference]: With dead ends: 2072 [2019-11-07 04:13:29,906 INFO L226 Difference]: Without dead ends: 1402 [2019-11-07 04:13:29,912 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:13:29,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2019-11-07 04:13:30,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1352. [2019-11-07 04:13:30,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2019-11-07 04:13:30,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2009 transitions. [2019-11-07 04:13:30,022 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2009 transitions. Word has length 116 [2019-11-07 04:13:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:30,023 INFO L462 AbstractCegarLoop]: Abstraction has 1352 states and 2009 transitions. [2019-11-07 04:13:30,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:13:30,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2009 transitions. [2019-11-07 04:13:30,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:13:30,028 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:30,028 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:30,029 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:30,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:30,029 INFO L82 PathProgramCache]: Analyzing trace with hash -356656398, now seen corresponding path program 1 times [2019-11-07 04:13:30,030 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:30,030 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349444850] [2019-11-07 04:13:30,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:13:30,220 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349444850] [2019-11-07 04:13:30,221 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:30,221 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:13:30,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650180519] [2019-11-07 04:13:30,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:13:30,223 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:30,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:13:30,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:13:30,224 INFO L87 Difference]: Start difference. First operand 1352 states and 2009 transitions. Second operand 9 states. [2019-11-07 04:13:30,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:30,545 INFO L93 Difference]: Finished difference Result 2636 states and 4022 transitions. [2019-11-07 04:13:30,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:13:30,546 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 118 [2019-11-07 04:13:30,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:30,559 INFO L225 Difference]: With dead ends: 2636 [2019-11-07 04:13:30,559 INFO L226 Difference]: Without dead ends: 1556 [2019-11-07 04:13:30,567 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:13:30,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2019-11-07 04:13:30,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2019-11-07 04:13:30,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2019-11-07 04:13:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2313 transitions. [2019-11-07 04:13:30,679 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2313 transitions. Word has length 118 [2019-11-07 04:13:30,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:30,680 INFO L462 AbstractCegarLoop]: Abstraction has 1556 states and 2313 transitions. [2019-11-07 04:13:30,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:13:30,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2313 transitions. [2019-11-07 04:13:30,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:13:30,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:30,685 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:30,685 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:30,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:30,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1523904988, now seen corresponding path program 1 times [2019-11-07 04:13:30,686 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:30,686 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593227646] [2019-11-07 04:13:30,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:13:30,949 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593227646] [2019-11-07 04:13:30,949 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:30,950 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:13:30,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894541705] [2019-11-07 04:13:30,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:13:30,951 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:30,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:13:30,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:13:30,951 INFO L87 Difference]: Start difference. First operand 1556 states and 2313 transitions. Second operand 6 states. [2019-11-07 04:13:35,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:35,427 INFO L93 Difference]: Finished difference Result 6381 states and 9869 transitions. [2019-11-07 04:13:35,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 04:13:35,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2019-11-07 04:13:35,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:35,471 INFO L225 Difference]: With dead ends: 6381 [2019-11-07 04:13:35,471 INFO L226 Difference]: Without dead ends: 4868 [2019-11-07 04:13:35,487 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:13:35,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2019-11-07 04:13:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4493. [2019-11-07 04:13:35,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4493 states. [2019-11-07 04:13:35,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4493 states to 4493 states and 6836 transitions. [2019-11-07 04:13:35,881 INFO L78 Accepts]: Start accepts. Automaton has 4493 states and 6836 transitions. Word has length 119 [2019-11-07 04:13:35,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:35,882 INFO L462 AbstractCegarLoop]: Abstraction has 4493 states and 6836 transitions. [2019-11-07 04:13:35,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:13:35,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4493 states and 6836 transitions. [2019-11-07 04:13:35,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:13:35,887 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:35,887 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:35,888 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:35,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:35,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1117673141, now seen corresponding path program 1 times [2019-11-07 04:13:35,888 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:35,889 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142295137] [2019-11-07 04:13:35,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:13:36,067 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142295137] [2019-11-07 04:13:36,067 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:36,068 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:13:36,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700300898] [2019-11-07 04:13:36,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:13:36,069 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:36,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:13:36,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:13:36,070 INFO L87 Difference]: Start difference. First operand 4493 states and 6836 transitions. Second operand 7 states. [2019-11-07 04:13:39,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:39,828 INFO L93 Difference]: Finished difference Result 8059 states and 12329 transitions. [2019-11-07 04:13:39,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:13:39,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-11-07 04:13:39,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:39,885 INFO L225 Difference]: With dead ends: 8059 [2019-11-07 04:13:39,886 INFO L226 Difference]: Without dead ends: 4663 [2019-11-07 04:13:39,919 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 04:13:39,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2019-11-07 04:13:40,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4577. [2019-11-07 04:13:40,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4577 states. [2019-11-07 04:13:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 6942 transitions. [2019-11-07 04:13:40,421 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 6942 transitions. Word has length 120 [2019-11-07 04:13:40,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:40,422 INFO L462 AbstractCegarLoop]: Abstraction has 4577 states and 6942 transitions. [2019-11-07 04:13:40,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:13:40,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 6942 transitions. [2019-11-07 04:13:40,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-07 04:13:40,426 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:40,426 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:40,426 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:40,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:40,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1581210488, now seen corresponding path program 1 times [2019-11-07 04:13:40,428 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:40,428 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750105322] [2019-11-07 04:13:40,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 04:13:40,616 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750105322] [2019-11-07 04:13:40,616 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:40,616 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:40,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155825138] [2019-11-07 04:13:40,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:40,617 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:40,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:40,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:40,618 INFO L87 Difference]: Start difference. First operand 4577 states and 6942 transitions. Second operand 3 states. [2019-11-07 04:13:40,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:40,941 INFO L93 Difference]: Finished difference Result 13485 states and 20655 transitions. [2019-11-07 04:13:40,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:40,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2019-11-07 04:13:40,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:41,021 INFO L225 Difference]: With dead ends: 13485 [2019-11-07 04:13:41,021 INFO L226 Difference]: Without dead ends: 8951 [2019-11-07 04:13:41,052 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 04:13:41,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8951 states.