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_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:00,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:00,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:00,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:00,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:00,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:00,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:00,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:00,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:00,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:00,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:00,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:00,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:00,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:00,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:00,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:00,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:00,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:00,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:00,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:00,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:00,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:00,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:00,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:00,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:00,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:00,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:00,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:00,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:00,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:00,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:00,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:00,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:00,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:00,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:00,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:00,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:00,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:00,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:00,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:00,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:00,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:03:00,697 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:00,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:00,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:00,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:00,701 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:00,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:00,702 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:00,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:00,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:00,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:00,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:00,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:00,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:00,707 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:00,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:00,708 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:00,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:00,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:00,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:00,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:00,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:00,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:00,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:00,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:00,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:00,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:00,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:00,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:00,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:03:01,034 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:01,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:01,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:01,053 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:01,054 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:01,054 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product22.cil.c [2019-10-13 23:03:01,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a97c26d7/7eac121ae9894aac954c42103303dc12/FLAGbf4602d6e [2019-10-13 23:03:01,814 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:01,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product22.cil.c [2019-10-13 23:03:01,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a97c26d7/7eac121ae9894aac954c42103303dc12/FLAGbf4602d6e [2019-10-13 23:03:01,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a97c26d7/7eac121ae9894aac954c42103303dc12 [2019-10-13 23:03:01,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:01,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:01,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:01,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:01,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:01,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:01" (1/1) ... [2019-10-13 23:03:01,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a9dc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:01, skipping insertion in model container [2019-10-13 23:03:01,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:01" (1/1) ... [2019-10-13 23:03:01,973 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:02,063 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:02,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:02,875 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:03,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:03,160 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:03,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:03 WrapperNode [2019-10-13 23:03:03,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:03,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:03,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:03,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:03,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:03" (1/1) ... [2019-10-13 23:03:03,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:03" (1/1) ... [2019-10-13 23:03:03,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:03" (1/1) ... [2019-10-13 23:03:03,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:03" (1/1) ... [2019-10-13 23:03:03,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:03" (1/1) ... [2019-10-13 23:03:03,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:03" (1/1) ... [2019-10-13 23:03:03,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:03" (1/1) ... [2019-10-13 23:03:03,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:03,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:03,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:03,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:03,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:03,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:03,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:03,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:03,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:03,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:03,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:03,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:03,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:03,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:03,508 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:03,508 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:03,509 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:03,509 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:03,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:03,510 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:03,510 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:03,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:03,513 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:03,513 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:03,515 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:03,515 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:03,515 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:03,515 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:03,516 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:03,516 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:03,516 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:03,516 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:03,516 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:03,516 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:03,517 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:03,517 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:03,517 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:03,517 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:03,518 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:03,518 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:03,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:03,518 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:03,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:03,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:03,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:03,519 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:03,519 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:03,519 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:03,520 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:03,520 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:03,520 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:03,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:03,520 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:03:03,520 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:03,521 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:03:03,521 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:03,521 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:03,521 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:03,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:03,521 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:03,522 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:03,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:03,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:03,523 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:03,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:03,523 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:03:03,523 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:03:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:03,525 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:03,525 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-13 23:03:03,525 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:03,525 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-13 23:03:03,525 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:03,526 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:03,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:03,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:03,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:03,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:03,529 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:03,529 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:03,529 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:03,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:03,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:03,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:03,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:03,532 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:03,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:03,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:03,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:03,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:03,534 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:03,534 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:03,534 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:03,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:03,534 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:03:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:03:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:03:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:03:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-13 23:03:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-13 23:03:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:08,397 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:08,397 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:08,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:08 BoogieIcfgContainer [2019-10-13 23:03:08,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:08,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:08,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:08,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:08,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:01" (1/3) ... [2019-10-13 23:03:08,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794fda95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:08, skipping insertion in model container [2019-10-13 23:03:08,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:03" (2/3) ... [2019-10-13 23:03:08,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794fda95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:08, skipping insertion in model container [2019-10-13 23:03:08,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:08" (3/3) ... [2019-10-13 23:03:08,410 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product22.cil.c [2019-10-13 23:03:08,420 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:08,430 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:08,442 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:08,484 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:08,484 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:08,484 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:08,485 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:08,485 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:08,485 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:08,485 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:08,485 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:08,526 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states. [2019-10-13 23:03:08,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 23:03:08,545 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:08,548 INFO L380 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] [2019-10-13 23:03:08,551 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:08,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:08,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1500827247, now seen corresponding path program 1 times [2019-10-13 23:03:08,570 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:08,571 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846199488] [2019-10-13 23:03:08,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:08,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:08,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:09,199 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846199488] [2019-10-13 23:03:09,200 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:09,200 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:03:09,200 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882774757] [2019-10-13 23:03:09,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:03:09,206 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:09,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:03:09,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:09,224 INFO L87 Difference]: Start difference. First operand 583 states. Second operand 2 states. [2019-10-13 23:03:09,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:09,296 INFO L93 Difference]: Finished difference Result 486 states and 722 transitions. [2019-10-13 23:03:09,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:03:09,298 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 97 [2019-10-13 23:03:09,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:09,324 INFO L225 Difference]: With dead ends: 486 [2019-10-13 23:03:09,325 INFO L226 Difference]: Without dead ends: 452 [2019-10-13 23:03:09,329 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:09,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2019-10-13 23:03:09,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2019-10-13 23:03:09,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2019-10-13 23:03:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 671 transitions. [2019-10-13 23:03:09,521 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 671 transitions. Word has length 97 [2019-10-13 23:03:09,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:09,524 INFO L462 AbstractCegarLoop]: Abstraction has 452 states and 671 transitions. [2019-10-13 23:03:09,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:03:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 671 transitions. [2019-10-13 23:03:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 23:03:09,533 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:09,534 INFO L380 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] [2019-10-13 23:03:09,534 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:09,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:09,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1281384838, now seen corresponding path program 1 times [2019-10-13 23:03:09,535 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:09,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067614130] [2019-10-13 23:03:09,536 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:09,536 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:09,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:09,910 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067614130] [2019-10-13 23:03:09,910 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:09,911 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:03:09,911 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976934284] [2019-10-13 23:03:09,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:03:09,913 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:09,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:03:09,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:09,914 INFO L87 Difference]: Start difference. First operand 452 states and 671 transitions. Second operand 9 states. [2019-10-13 23:03:15,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:15,649 INFO L93 Difference]: Finished difference Result 1217 states and 1853 transitions. [2019-10-13 23:03:15,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 23:03:15,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2019-10-13 23:03:15,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:15,666 INFO L225 Difference]: With dead ends: 1217 [2019-10-13 23:03:15,667 INFO L226 Difference]: Without dead ends: 818 [2019-10-13 23:03:15,678 INFO L600 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 [2019-10-13 23:03:15,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2019-10-13 23:03:15,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 787. [2019-10-13 23:03:15,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2019-10-13 23:03:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1158 transitions. [2019-10-13 23:03:15,796 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1158 transitions. Word has length 98 [2019-10-13 23:03:15,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:15,797 INFO L462 AbstractCegarLoop]: Abstraction has 787 states and 1158 transitions. [2019-10-13 23:03:15,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:03:15,797 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1158 transitions. [2019-10-13 23:03:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 23:03:15,801 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:15,801 INFO L380 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] [2019-10-13 23:03:15,801 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:15,802 INFO L82 PathProgramCache]: Analyzing trace with hash 837344238, now seen corresponding path program 1 times [2019-10-13 23:03:15,802 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:15,802 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095781516] [2019-10-13 23:03:15,803 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:15,803 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:15,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:16,114 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095781516] [2019-10-13 23:03:16,114 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:16,114 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:03:16,115 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367213253] [2019-10-13 23:03:16,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:03:16,116 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:16,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:03:16,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:03:16,117 INFO L87 Difference]: Start difference. First operand 787 states and 1158 transitions. Second operand 3 states. [2019-10-13 23:03:16,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:16,246 INFO L93 Difference]: Finished difference Result 2247 states and 3357 transitions. [2019-10-13 23:03:16,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:03:16,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2019-10-13 23:03:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:16,265 INFO L225 Difference]: With dead ends: 2247 [2019-10-13 23:03:16,265 INFO L226 Difference]: Without dead ends: 1515 [2019-10-13 23:03:16,270 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:03:16,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2019-10-13 23:03:16,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1508. [2019-10-13 23:03:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1508 states. [2019-10-13 23:03:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 2244 transitions. [2019-10-13 23:03:16,427 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 2244 transitions. Word has length 99 [2019-10-13 23:03:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:16,427 INFO L462 AbstractCegarLoop]: Abstraction has 1508 states and 2244 transitions. [2019-10-13 23:03:16,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:03:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 2244 transitions. [2019-10-13 23:03:16,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 23:03:16,430 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:16,430 INFO L380 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] [2019-10-13 23:03:16,431 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:16,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:16,431 INFO L82 PathProgramCache]: Analyzing trace with hash 187569329, now seen corresponding path program 1 times [2019-10-13 23:03:16,431 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:16,432 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227538845] [2019-10-13 23:03:16,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:16,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:16,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:16,711 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227538845] [2019-10-13 23:03:16,711 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:16,711 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:03:16,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997769550] [2019-10-13 23:03:16,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:03:16,712 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:16,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:03:16,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:03:16,713 INFO L87 Difference]: Start difference. First operand 1508 states and 2244 transitions. Second operand 6 states. [2019-10-13 23:03:19,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:19,880 INFO L93 Difference]: Finished difference Result 4805 states and 7297 transitions. [2019-10-13 23:03:19,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:03:19,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2019-10-13 23:03:19,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:19,912 INFO L225 Difference]: With dead ends: 4805 [2019-10-13 23:03:19,912 INFO L226 Difference]: Without dead ends: 3353 [2019-10-13 23:03:19,922 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:19,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2019-10-13 23:03:20,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 3042. [2019-10-13 23:03:20,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3042 states. [2019-10-13 23:03:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 4615 transitions. [2019-10-13 23:03:20,191 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 4615 transitions. Word has length 100 [2019-10-13 23:03:20,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:20,194 INFO L462 AbstractCegarLoop]: Abstraction has 3042 states and 4615 transitions. [2019-10-13 23:03:20,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:03:20,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 4615 transitions. [2019-10-13 23:03:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-13 23:03:20,203 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:20,204 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:20,204 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:20,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1550250293, now seen corresponding path program 1 times [2019-10-13 23:03:20,205 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:20,206 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523939025] [2019-10-13 23:03:20,206 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,207 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:20,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523939025] [2019-10-13 23:03:20,595 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:20,596 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:03:20,596 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266996800] [2019-10-13 23:03:20,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:03:20,597 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:20,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:03:20,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:03:20,598 INFO L87 Difference]: Start difference. First operand 3042 states and 4615 transitions. Second operand 12 states. [2019-10-13 23:03:28,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:28,372 INFO L93 Difference]: Finished difference Result 9144 states and 13864 transitions. [2019-10-13 23:03:28,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 23:03:28,373 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2019-10-13 23:03:28,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:28,423 INFO L225 Difference]: With dead ends: 9144 [2019-10-13 23:03:28,423 INFO L226 Difference]: Without dead ends: 6157 [2019-10-13 23:03:28,445 INFO L600 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 [2019-10-13 23:03:28,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2019-10-13 23:03:28,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 6055. [2019-10-13 23:03:28,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6055 states. [2019-10-13 23:03:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 9082 transitions. [2019-10-13 23:03:28,862 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 9082 transitions. Word has length 139 [2019-10-13 23:03:28,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:28,864 INFO L462 AbstractCegarLoop]: Abstraction has 6055 states and 9082 transitions. [2019-10-13 23:03:28,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:03:28,868 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 9082 transitions. [2019-10-13 23:03:28,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 23:03:28,872 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:28,872 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:28,873 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:28,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:28,873 INFO L82 PathProgramCache]: Analyzing trace with hash 475221456, now seen corresponding path program 1 times [2019-10-13 23:03:28,874 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:28,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758486208] [2019-10-13 23:03:28,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:28,879 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:28,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:29,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758486208] [2019-10-13 23:03:29,133 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:29,134 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:03:29,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825215823] [2019-10-13 23:03:29,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:03:29,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:29,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:03:29,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:29,136 INFO L87 Difference]: Start difference. First operand 6055 states and 9082 transitions. Second operand 9 states.