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_spec2_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:08:30,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:08:30,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:08:30,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:08:30,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:08:30,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:08:30,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:08:30,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:08:30,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:08:30,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:08:30,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:08:30,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:08:30,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:08:30,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:08:30,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:08:30,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:08:30,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:08:30,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:08:30,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:08:30,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:08:31,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:08:31,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:08:31,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:08:31,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:08:31,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:08:31,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:08:31,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:08:31,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:08:31,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:08:31,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:08:31,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:08:31,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:08:31,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:08:31,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:08:31,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:08:31,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:08:31,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:08:31,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:08:31,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:08:31,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:08:31,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:08:31,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:08:31,070 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:08:31,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:08:31,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:08:31,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:08:31,077 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:08:31,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:08:31,078 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:08:31,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:08:31,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:08:31,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:08:31,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:08:31,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:08:31,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:08:31,079 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:08:31,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:08:31,079 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:08:31,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:08:31,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:08:31,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:08:31,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:08:31,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:08:31,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:08:31,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:08:31,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:08:31,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:08:31,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:08:31,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:08:31,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:08:31,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:08:31,518 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:08:31,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:08:31,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:08:31,545 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:08:31,546 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:08:31,547 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c [2019-10-15 03:08:31,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdd5d7d7d/802e817a056c44489593776126c969bd/FLAG24bafd9e8 [2019-10-15 03:08:32,530 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:08:32,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c [2019-10-15 03:08:32,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdd5d7d7d/802e817a056c44489593776126c969bd/FLAG24bafd9e8 [2019-10-15 03:08:32,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdd5d7d7d/802e817a056c44489593776126c969bd [2019-10-15 03:08:32,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:08:32,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:08:32,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:32,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:08:32,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:08:32,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:32" (1/1) ... [2019-10-15 03:08:32,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a78272c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:32, skipping insertion in model container [2019-10-15 03:08:32,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:32" (1/1) ... [2019-10-15 03:08:32,686 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:08:32,801 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:08:33,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:33,745 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:08:33,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:33,975 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:08:33,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:33 WrapperNode [2019-10-15 03:08:33,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:33,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:08:33,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:08:33,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:08:33,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:33" (1/1) ... [2019-10-15 03:08:33,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:33" (1/1) ... [2019-10-15 03:08:34,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:33" (1/1) ... [2019-10-15 03:08:34,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:33" (1/1) ... [2019-10-15 03:08:34,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:33" (1/1) ... [2019-10-15 03:08:34,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:33" (1/1) ... [2019-10-15 03:08:34,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:33" (1/1) ... [2019-10-15 03:08:34,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:08:34,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:08:34,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:08:34,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:08:34,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:08:34,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:08:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:08:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:08:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:08:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:08:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:08:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:08:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:08:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:08:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:08:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:08:34,446 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:08:34,446 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:08:34,446 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:08:34,447 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:08:34,449 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:08:34,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:08:34,450 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:08:34,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:08:34,451 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:08:34,452 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:08:34,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:08:34,454 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:08:34,454 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:08:34,455 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:34,455 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:08:34,455 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:08:34,455 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 03:08:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:08:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 03:08:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:08:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:08:34,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:08:34,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:08:34,457 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:08:34,457 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:08:34,458 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:08:34,458 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:08:34,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:08:34,458 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:08:34,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:08:34,459 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:08:34,459 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:08:34,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:08:34,460 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:08:34,460 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:08:34,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:08:34,460 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:08:34,461 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:08:34,461 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:08:34,461 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:08:34,461 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:08:34,462 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:08:34,462 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:08:34,462 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:08:34,462 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:08:34,463 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:08:34,463 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:08:34,464 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:08:34,464 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:08:34,465 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:08:34,465 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:08:34,465 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:08:34,465 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:08:34,466 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:08:34,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:08:34,466 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:08:34,466 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:08:34,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:34,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:34,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:34,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:08:34,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:08:34,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:08:34,469 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:08:34,469 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:08:34,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:08:34,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:08:34,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:08:34,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:08:34,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:08:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:08:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:08:34,473 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:08:34,473 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:08:34,474 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:08:34,474 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:08:34,474 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:08:34,474 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:08:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:08:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:08:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:08:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:08:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:08:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:08:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:08:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:08:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:08:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:08:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:08:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:08:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:08:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:08:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:08:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:08:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:08:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:08:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:08:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:08:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:08:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:08:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:08:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:08:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:08:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:08:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:08:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:08:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:08:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:08:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:08:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 03:08:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:08:34,484 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 03:08:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:08:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:08:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:08:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:08:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:08:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:08:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:08:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:08:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:08:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:08:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:08:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:08:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:08:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:08:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:08:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:08:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:08:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:08:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:08:34,506 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:08:34,507 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:08:34,507 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:08:34,507 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:08:34,507 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:08:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:08:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:08:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:08:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:08:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:08:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:08:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:08:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:08:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:08:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:08:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:08:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:08:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:08:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:08:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:08:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:08:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:08:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:08:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:08:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:08:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:08:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:08:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:08:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:08:42,699 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:08:42,699 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:08:42,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:42 BoogieIcfgContainer [2019-10-15 03:08:42,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:08:42,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:08:42,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:08:42,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:08:42,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:08:32" (1/3) ... [2019-10-15 03:08:42,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eecd62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:42, skipping insertion in model container [2019-10-15 03:08:42,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:33" (2/3) ... [2019-10-15 03:08:42,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eecd62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:42, skipping insertion in model container [2019-10-15 03:08:42,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:42" (3/3) ... [2019-10-15 03:08:42,721 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product28.cil.c [2019-10-15 03:08:42,736 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:08:42,749 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:08:42,768 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:08:42,806 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:08:42,806 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:08:42,806 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:08:42,806 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:08:42,807 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:08:42,807 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:08:42,807 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:08:42,807 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:08:42,847 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2019-10-15 03:08:42,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-15 03:08:42,868 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:42,869 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:42,871 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:42,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:42,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1105412057, now seen corresponding path program 1 times [2019-10-15 03:08:42,886 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:42,887 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428539359] [2019-10-15 03:08:42,887 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:42,887 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:42,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:43,519 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428539359] [2019-10-15 03:08:43,520 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:43,520 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:08:43,521 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425898880] [2019-10-15 03:08:43,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:08:43,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:43,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:08:43,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:43,544 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 2 states. [2019-10-15 03:08:43,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:43,725 INFO L93 Difference]: Finished difference Result 488 states and 723 transitions. [2019-10-15 03:08:43,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:08:43,729 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-15 03:08:43,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:43,767 INFO L225 Difference]: With dead ends: 488 [2019-10-15 03:08:43,768 INFO L226 Difference]: Without dead ends: 454 [2019-10-15 03:08:43,773 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:43,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2019-10-15 03:08:43,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2019-10-15 03:08:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2019-10-15 03:08:43,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 672 transitions. [2019-10-15 03:08:43,902 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 672 transitions. Word has length 74 [2019-10-15 03:08:43,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:43,907 INFO L462 AbstractCegarLoop]: Abstraction has 454 states and 672 transitions. [2019-10-15 03:08:43,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:08:43,907 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 672 transitions. [2019-10-15 03:08:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-15 03:08:43,921 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:43,922 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:43,925 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:43,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:43,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1603361045, now seen corresponding path program 1 times [2019-10-15 03:08:43,926 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:43,926 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148221637] [2019-10-15 03:08:43,926 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:43,927 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:43,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:44,413 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148221637] [2019-10-15 03:08:44,413 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:44,413 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:08:44,413 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448397852] [2019-10-15 03:08:44,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:08:44,416 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:44,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:08:44,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:08:44,417 INFO L87 Difference]: Start difference. First operand 454 states and 672 transitions. Second operand 6 states. [2019-10-15 03:08:49,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:49,793 INFO L93 Difference]: Finished difference Result 1382 states and 2118 transitions. [2019-10-15 03:08:49,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:08:49,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2019-10-15 03:08:49,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:49,806 INFO L225 Difference]: With dead ends: 1382 [2019-10-15 03:08:49,807 INFO L226 Difference]: Without dead ends: 970 [2019-10-15 03:08:49,814 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:49,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2019-10-15 03:08:49,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 875. [2019-10-15 03:08:49,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2019-10-15 03:08:49,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1344 transitions. [2019-10-15 03:08:49,918 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1344 transitions. Word has length 75 [2019-10-15 03:08:49,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:49,921 INFO L462 AbstractCegarLoop]: Abstraction has 875 states and 1344 transitions. [2019-10-15 03:08:49,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:08:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1344 transitions. [2019-10-15 03:08:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-15 03:08:49,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:49,934 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-15 03:08:49,935 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:49,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:49,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1284134923, now seen corresponding path program 1 times [2019-10-15 03:08:49,935 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:49,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340974879] [2019-10-15 03:08:49,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:49,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:49,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:50,393 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340974879] [2019-10-15 03:08:50,393 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:50,394 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:08:50,394 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116430139] [2019-10-15 03:08:50,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:08:50,395 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:50,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:08:50,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:08:50,396 INFO L87 Difference]: Start difference. First operand 875 states and 1344 transitions. Second operand 12 states. [2019-10-15 03:09:01,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:01,788 INFO L93 Difference]: Finished difference Result 2654 states and 4095 transitions. [2019-10-15 03:09:01,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 03:09:01,789 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2019-10-15 03:09:01,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:01,805 INFO L225 Difference]: With dead ends: 2654 [2019-10-15 03:09:01,805 INFO L226 Difference]: Without dead ends: 1821 [2019-10-15 03:09:01,812 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-15 03:09:01,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2019-10-15 03:09:01,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1762. [2019-10-15 03:09:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1762 states. [2019-10-15 03:09:01,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2698 transitions. [2019-10-15 03:09:01,996 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2698 transitions. Word has length 122 [2019-10-15 03:09:01,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:01,996 INFO L462 AbstractCegarLoop]: Abstraction has 1762 states and 2698 transitions. [2019-10-15 03:09:01,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:09:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2698 transitions. [2019-10-15 03:09:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-15 03:09:02,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:02,003 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-15 03:09:02,004 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:02,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:02,004 INFO L82 PathProgramCache]: Analyzing trace with hash -340449060, now seen corresponding path program 1 times [2019-10-15 03:09:02,005 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:02,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941715883] [2019-10-15 03:09:02,005 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:02,005 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:02,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:02,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941715883] [2019-10-15 03:09:02,269 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:02,269 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:09:02,269 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054781619] [2019-10-15 03:09:02,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:02,270 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:02,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:02,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:09:02,271 INFO L87 Difference]: Start difference. First operand 1762 states and 2698 transitions. Second operand 4 states. [2019-10-15 03:09:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:04,571 INFO L93 Difference]: Finished difference Result 4521 states and 7073 transitions. [2019-10-15 03:09:04,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:09:04,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-15 03:09:04,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:04,593 INFO L225 Difference]: With dead ends: 4521 [2019-10-15 03:09:04,594 INFO L226 Difference]: Without dead ends: 2801 [2019-10-15 03:09:04,604 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:09:04,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2019-10-15 03:09:04,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2720. [2019-10-15 03:09:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2720 states. [2019-10-15 03:09:04,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 4209 transitions. [2019-10-15 03:09:04,848 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 4209 transitions. Word has length 123 [2019-10-15 03:09:04,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:04,851 INFO L462 AbstractCegarLoop]: Abstraction has 2720 states and 4209 transitions. [2019-10-15 03:09:04,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:09:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 4209 transitions. [2019-10-15 03:09:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 03:09:04,856 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:04,857 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-15 03:09:04,857 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:04,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:04,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1965396766, now seen corresponding path program 1 times [2019-10-15 03:09:04,858 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:04,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554644653] [2019-10-15 03:09:04,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:04,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:04,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:05,082 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554644653] [2019-10-15 03:09:05,082 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:05,082 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:09:05,082 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651283753] [2019-10-15 03:09:05,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:05,084 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:05,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:05,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:09:05,085 INFO L87 Difference]: Start difference. First operand 2720 states and 4209 transitions. Second operand 4 states. [2019-10-15 03:09:07,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:07,719 INFO L93 Difference]: Finished difference Result 7420 states and 11858 transitions. [2019-10-15 03:09:07,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:09:07,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-15 03:09:07,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:07,754 INFO L225 Difference]: With dead ends: 7420 [2019-10-15 03:09:07,754 INFO L226 Difference]: Without dead ends: 4743 [2019-10-15 03:09:07,770 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:09:07,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2019-10-15 03:09:08,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 4629. [2019-10-15 03:09:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4629 states. [2019-10-15 03:09:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7294 transitions. [2019-10-15 03:09:08,067 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7294 transitions. Word has length 124 [2019-10-15 03:09:08,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:08,068 INFO L462 AbstractCegarLoop]: Abstraction has 4629 states and 7294 transitions. [2019-10-15 03:09:08,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:09:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7294 transitions. [2019-10-15 03:09:08,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 03:09:08,073 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:08,073 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-15 03:09:08,073 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:08,074 INFO L82 PathProgramCache]: Analyzing trace with hash -799164194, now seen corresponding path program 1 times [2019-10-15 03:09:08,074 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:08,074 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090585649] [2019-10-15 03:09:08,075 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:08,075 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:08,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:08,263 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090585649] [2019-10-15 03:09:08,263 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:08,263 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:09:08,264 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433895096] [2019-10-15 03:09:08,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:08,264 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:08,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:08,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:09:08,265 INFO L87 Difference]: Start difference. First operand 4629 states and 7294 transitions. Second operand 4 states. [2019-10-15 03:09:10,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:10,737 INFO L93 Difference]: Finished difference Result 13234 states and 21956 transitions. [2019-10-15 03:09:10,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:09:10,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-15 03:09:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:10,812 INFO L225 Difference]: With dead ends: 13234 [2019-10-15 03:09:10,812 INFO L226 Difference]: Without dead ends: 8650 [2019-10-15 03:09:10,845 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:09:10,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8650 states. [2019-10-15 03:09:11,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8650 to 8471. [2019-10-15 03:09:11,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8471 states. [2019-10-15 03:09:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8471 states to 8471 states and 13782 transitions. [2019-10-15 03:09:11,511 INFO L78 Accepts]: Start accepts. Automaton has 8471 states and 13782 transitions. Word has length 125 [2019-10-15 03:09:11,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:11,513 INFO L462 AbstractCegarLoop]: Abstraction has 8471 states and 13782 transitions. [2019-10-15 03:09:11,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:09:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 8471 states and 13782 transitions. [2019-10-15 03:09:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 03:09:11,518 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:11,518 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:11,518 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:11,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:11,519 INFO L82 PathProgramCache]: Analyzing trace with hash 994311076, now seen corresponding path program 1 times [2019-10-15 03:09:11,519 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:11,519 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714420725] [2019-10-15 03:09:11,519 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:11,520 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:11,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:11,715 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714420725] [2019-10-15 03:09:11,715 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:11,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:09:11,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25214562] [2019-10-15 03:09:11,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:11,716 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:11,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:11,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:09:11,717 INFO L87 Difference]: Start difference. First operand 8471 states and 13782 transitions. Second operand 4 states.