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_spec3_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:44,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:44,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:44,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:44,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:44,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:44,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:44,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:44,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:44,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:44,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:44,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:44,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:44,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:44,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:44,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:44,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:44,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:44,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:44,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:44,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:45,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:45,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:45,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:45,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:45,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:45,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:45,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:45,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:45,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:45,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:45,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:45,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:45,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:45,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:45,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:45,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:45,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:45,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:45,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:45,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:45,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:09:45,060 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:45,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:45,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:45,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:45,064 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:45,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:45,065 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:45,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:45,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:45,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:45,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:45,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:45,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:45,068 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:45,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:45,068 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:45,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:45,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:45,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:45,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:45,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:45,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:45,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:45,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:45,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:45,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:45,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:45,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:45,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:09:45,477 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:45,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:45,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:45,514 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:45,515 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:45,515 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product30.cil.c [2019-10-15 03:09:45,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63e337cf3/6574aa464aa541d68b20e7040c8f07a6/FLAG46c592366 [2019-10-15 03:09:46,462 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:46,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product30.cil.c [2019-10-15 03:09:46,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63e337cf3/6574aa464aa541d68b20e7040c8f07a6/FLAG46c592366 [2019-10-15 03:09:46,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63e337cf3/6574aa464aa541d68b20e7040c8f07a6 [2019-10-15 03:09:46,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:46,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:46,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:46,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:46,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:46,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:46" (1/1) ... [2019-10-15 03:09:46,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@375e2983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:46, skipping insertion in model container [2019-10-15 03:09:46,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:46" (1/1) ... [2019-10-15 03:09:46,647 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:46,743 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:47,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:47,653 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:47,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:47,944 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:47,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47 WrapperNode [2019-10-15 03:09:47,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:47,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:47,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:47,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:47,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... [2019-10-15 03:09:47,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... [2019-10-15 03:09:48,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... [2019-10-15 03:09:48,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... [2019-10-15 03:09:48,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... [2019-10-15 03:09:48,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... [2019-10-15 03:09:48,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... [2019-10-15 03:09:48,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:48,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:48,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:48,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:48,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:48,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:48,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:48,245 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:48,245 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:48,245 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:48,246 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:48,246 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:48,247 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:48,247 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:48,247 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:48,248 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:48,248 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:48,252 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:48,256 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:48,256 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:48,256 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:48,256 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:48,256 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:48,259 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:48,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:48,259 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:48,259 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-15 03:09:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-15 03:09:48,261 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:48,261 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:48,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:48,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:48,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:48,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:48,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:48,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:48,263 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:48,264 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:48,264 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:48,264 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:48,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:48,267 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:48,267 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:48,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:48,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:48,269 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:48,272 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:48,272 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:48,273 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:48,273 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:48,273 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:48,273 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:48,273 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:48,275 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:48,275 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:48,275 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:48,275 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:09:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-15 03:09:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-15 03:09:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:48,298 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:48,298 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:48,298 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:48,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:48,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:09:54,461 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:09:54,462 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:09:54,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:54 BoogieIcfgContainer [2019-10-15 03:09:54,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:09:54,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:09:54,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:09:54,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:09:54,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:46" (1/3) ... [2019-10-15 03:09:54,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7363da7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:54, skipping insertion in model container [2019-10-15 03:09:54,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:47" (2/3) ... [2019-10-15 03:09:54,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7363da7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:54, skipping insertion in model container [2019-10-15 03:09:54,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:54" (3/3) ... [2019-10-15 03:09:54,472 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product30.cil.c [2019-10-15 03:09:54,483 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:09:54,494 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:09:54,508 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:09:54,542 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:09:54,542 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:09:54,542 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:09:54,542 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:09:54,542 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:09:54,542 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:09:54,543 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:09:54,543 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:09:54,581 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states. [2019-10-15 03:09:54,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-15 03:09:54,595 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:54,596 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:54,599 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:54,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:54,606 INFO L82 PathProgramCache]: Analyzing trace with hash -603185997, now seen corresponding path program 1 times [2019-10-15 03:09:54,616 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:54,617 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492550117] [2019-10-15 03:09:54,617 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:54,618 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:54,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:09:55,740 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492550117] [2019-10-15 03:09:55,741 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016420880] [2019-10-15 03:09:55,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:56,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 2921 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:56,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:09:56,607 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:56,832 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:56,834 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:09:56,834 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507990215] [2019-10-15 03:09:56,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:56,843 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:56,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:56,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:56,859 INFO L87 Difference]: Start difference. First operand 615 states. Second operand 3 states. [2019-10-15 03:09:57,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:57,128 INFO L93 Difference]: Finished difference Result 1349 states and 2043 transitions. [2019-10-15 03:09:57,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:57,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2019-10-15 03:09:57,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:57,174 INFO L225 Difference]: With dead ends: 1349 [2019-10-15 03:09:57,174 INFO L226 Difference]: Without dead ends: 872 [2019-10-15 03:09:57,187 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:57,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2019-10-15 03:09:57,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 859. [2019-10-15 03:09:57,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2019-10-15 03:09:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1284 transitions. [2019-10-15 03:09:57,404 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1284 transitions. Word has length 80 [2019-10-15 03:09:57,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:57,405 INFO L462 AbstractCegarLoop]: Abstraction has 859 states and 1284 transitions. [2019-10-15 03:09:57,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:57,405 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1284 transitions. [2019-10-15 03:09:57,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-15 03:09:57,433 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:57,433 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:57,640 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:57,641 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:57,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:57,642 INFO L82 PathProgramCache]: Analyzing trace with hash 877056551, now seen corresponding path program 1 times [2019-10-15 03:09:57,642 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:57,642 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121262861] [2019-10-15 03:09:57,643 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:57,643 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:57,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:09:58,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121262861] [2019-10-15 03:09:58,045 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:58,046 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:09:58,047 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419010253] [2019-10-15 03:09:58,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:58,052 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:58,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:58,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:58,052 INFO L87 Difference]: Start difference. First operand 859 states and 1284 transitions. Second operand 10 states. [2019-10-15 03:09:59,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:59,665 INFO L93 Difference]: Finished difference Result 1697 states and 2561 transitions. [2019-10-15 03:09:59,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 03:09:59,665 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2019-10-15 03:09:59,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:59,689 INFO L225 Difference]: With dead ends: 1697 [2019-10-15 03:09:59,689 INFO L226 Difference]: Without dead ends: 1694 [2019-10-15 03:09:59,693 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:59,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2019-10-15 03:09:59,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1658. [2019-10-15 03:09:59,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2019-10-15 03:09:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2517 transitions. [2019-10-15 03:09:59,860 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2517 transitions. Word has length 81 [2019-10-15 03:09:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:59,865 INFO L462 AbstractCegarLoop]: Abstraction has 1658 states and 2517 transitions. [2019-10-15 03:09:59,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:09:59,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2517 transitions. [2019-10-15 03:09:59,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-15 03:09:59,879 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:59,879 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:59,879 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:59,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:59,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1476602668, now seen corresponding path program 1 times [2019-10-15 03:09:59,880 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:59,881 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041624099] [2019-10-15 03:09:59,881 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:59,881 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:59,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:10:00,078 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041624099] [2019-10-15 03:10:00,078 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:00,078 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:00,079 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32283861] [2019-10-15 03:10:00,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:00,080 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:00,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:00,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:00,081 INFO L87 Difference]: Start difference. First operand 1658 states and 2517 transitions. Second operand 3 states. [2019-10-15 03:10:00,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:00,333 INFO L93 Difference]: Finished difference Result 4047 states and 6251 transitions. [2019-10-15 03:10:00,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:00,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2019-10-15 03:10:00,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:00,361 INFO L225 Difference]: With dead ends: 4047 [2019-10-15 03:10:00,361 INFO L226 Difference]: Without dead ends: 2420 [2019-10-15 03:10:00,372 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:00,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2019-10-15 03:10:00,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2362. [2019-10-15 03:10:00,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2362 states. [2019-10-15 03:10:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3607 transitions. [2019-10-15 03:10:00,653 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3607 transitions. Word has length 82 [2019-10-15 03:10:00,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:00,654 INFO L462 AbstractCegarLoop]: Abstraction has 2362 states and 3607 transitions. [2019-10-15 03:10:00,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:00,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3607 transitions. [2019-10-15 03:10:00,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-15 03:10:00,658 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:00,659 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:00,659 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:00,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:00,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1461243360, now seen corresponding path program 1 times [2019-10-15 03:10:00,660 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:00,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862361931] [2019-10-15 03:10:00,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:00,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:00,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:10:01,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862361931] [2019-10-15 03:10:01,136 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782178788] [2019-10-15 03:10:01,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:01,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 2922 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:10:01,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:10:01,925 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:10:02,054 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:10:02,054 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:10:02,055 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726123266] [2019-10-15 03:10:02,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:02,056 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:02,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:02,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:10:02,057 INFO L87 Difference]: Start difference. First operand 2362 states and 3607 transitions. Second operand 3 states. [2019-10-15 03:10:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:02,418 INFO L93 Difference]: Finished difference Result 5471 states and 8427 transitions. [2019-10-15 03:10:02,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:02,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-15 03:10:02,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:02,456 INFO L225 Difference]: With dead ends: 5471 [2019-10-15 03:10:02,456 INFO L226 Difference]: Without dead ends: 3140 [2019-10-15 03:10:02,478 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:10:02,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2019-10-15 03:10:02,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3082. [2019-10-15 03:10:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3082 states. [2019-10-15 03:10:02,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 4711 transitions. [2019-10-15 03:10:02,777 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 4711 transitions. Word has length 81 [2019-10-15 03:10:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:02,778 INFO L462 AbstractCegarLoop]: Abstraction has 3082 states and 4711 transitions. [2019-10-15 03:10:02,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 4711 transitions. [2019-10-15 03:10:02,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-15 03:10:02,782 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:02,782 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:02,989 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:02,990 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:02,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:02,991 INFO L82 PathProgramCache]: Analyzing trace with hash -612635584, now seen corresponding path program 1 times [2019-10-15 03:10:02,992 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:02,992 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979977990] [2019-10-15 03:10:02,993 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:02,993 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:02,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:10:03,330 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979977990] [2019-10-15 03:10:03,330 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538020435] [2019-10-15 03:10:03,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:04,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:10:04,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:10:04,252 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:04,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:10:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:10:04,585 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:10:04,585 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-15 03:10:04,586 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404898841] [2019-10-15 03:10:04,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 03:10:04,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:04,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 03:10:04,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:10:04,592 INFO L87 Difference]: Start difference. First operand 3082 states and 4711 transitions. Second operand 11 states. [2019-10-15 03:10:11,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:11,551 INFO L93 Difference]: Finished difference Result 8682 states and 13465 transitions. [2019-10-15 03:10:11,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 03:10:11,552 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2019-10-15 03:10:11,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:11,603 INFO L225 Difference]: With dead ends: 8682 [2019-10-15 03:10:11,603 INFO L226 Difference]: Without dead ends: 5631 [2019-10-15 03:10:11,629 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 156 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-15 03:10:11,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2019-10-15 03:10:11,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 5607. [2019-10-15 03:10:11,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5607 states. [2019-10-15 03:10:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5607 states to 5607 states and 8349 transitions. [2019-10-15 03:10:12,008 INFO L78 Accepts]: Start accepts. Automaton has 5607 states and 8349 transitions. Word has length 82 [2019-10-15 03:10:12,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:12,010 INFO L462 AbstractCegarLoop]: Abstraction has 5607 states and 8349 transitions. [2019-10-15 03:10:12,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 03:10:12,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5607 states and 8349 transitions. [2019-10-15 03:10:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 03:10:12,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:12,020 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2019-10-15 03:10:12,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:12,229 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:12,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:12,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1818230406, now seen corresponding path program 1 times [2019-10-15 03:10:12,230 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:12,230 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673729059] [2019-10-15 03:10:12,231 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:12,231 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:12,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:10:12,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673729059] [2019-10-15 03:10:12,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205356965] [2019-10-15 03:10:12,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:13,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-15 03:10:13,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:10:13,311 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:13,680 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:10:13,754 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 03:10:13,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:10:13,826 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 03:10:13,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:10:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:10:14,088 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:10:14,088 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 19 [2019-10-15 03:10:14,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911939480] [2019-10-15 03:10:14,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:10:14,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:14,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:10:14,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:10:14,090 INFO L87 Difference]: Start difference. First operand 5607 states and 8349 transitions. Second operand 9 states. [2019-10-15 03:10:20,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:20,249 INFO L93 Difference]: Finished difference Result 11004 states and 16708 transitions. [2019-10-15 03:10:20,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:10:20,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2019-10-15 03:10:20,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:20,295 INFO L225 Difference]: With dead ends: 11004 [2019-10-15 03:10:20,295 INFO L226 Difference]: Without dead ends: 6229 [2019-10-15 03:10:20,322 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 242 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2019-10-15 03:10:20,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6229 states. [2019-10-15 03:10:20,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6229 to 5840. [2019-10-15 03:10:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5840 states. [2019-10-15 03:10:20,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 8810 transitions. [2019-10-15 03:10:20,744 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 8810 transitions. Word has length 128 [2019-10-15 03:10:20,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:20,746 INFO L462 AbstractCegarLoop]: Abstraction has 5840 states and 8810 transitions. [2019-10-15 03:10:20,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:10:20,746 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 8810 transitions. [2019-10-15 03:10:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-15 03:10:20,756 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:20,756 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2019-10-15 03:10:20,964 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:20,965 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:20,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:20,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1893573984, now seen corresponding path program 1 times [2019-10-15 03:10:20,965 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:20,966 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009839540] [2019-10-15 03:10:20,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:20,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:20,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:10:21,249 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009839540] [2019-10-15 03:10:21,250 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:21,250 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:10:21,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228588956] [2019-10-15 03:10:21,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:10:21,253 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:21,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:10:21,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:10:21,254 INFO L87 Difference]: Start difference. First operand 5840 states and 8810 transitions. Second operand 10 states.