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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:12:04,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:12:04,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:12:04,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:12:04,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:12:04,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:12:04,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:12:04,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:12:04,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:12:04,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:12:04,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:12:04,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:12:04,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:12:04,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:12:04,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:12:04,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:12:04,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:12:04,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:12:04,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:12:04,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:12:04,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:12:05,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:12:05,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:12:05,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:12:05,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:12:05,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:12:05,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:12:05,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:12:05,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:12:05,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:12:05,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:12:05,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:12:05,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:12:05,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:12:05,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:12:05,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:12:05,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:12:05,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:12:05,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:12:05,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:12:05,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:12:05,018 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:12:05,051 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:12:05,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:12:05,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:12:05,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:12:05,052 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:12:05,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:12:05,053 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:12:05,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:12:05,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:12:05,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:12:05,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:12:05,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:12:05,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:12:05,054 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:12:05,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:12:05,055 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:12:05,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:12:05,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:12:05,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:12:05,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:12:05,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:12:05,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:05,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:12:05,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:12:05,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:12:05,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:12:05,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:12:05,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:12:05,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:12:05,348 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:12:05,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:12:05,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:12:05,367 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:12:05,368 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:12:05,368 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product30.cil.c [2019-10-13 21:12:05,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb4dff94/198dd1981a6240089e357714da295900/FLAGb0e0a966e [2019-10-13 21:12:06,075 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:12:06,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product30.cil.c [2019-10-13 21:12:06,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb4dff94/198dd1981a6240089e357714da295900/FLAGb0e0a966e [2019-10-13 21:12:06,286 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb4dff94/198dd1981a6240089e357714da295900 [2019-10-13 21:12:06,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:12:06,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:12:06,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:06,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:12:06,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:12:06,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:06" (1/1) ... [2019-10-13 21:12:06,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f7640f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:06, skipping insertion in model container [2019-10-13 21:12:06,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:06" (1/1) ... [2019-10-13 21:12:06,316 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:12:06,406 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:12:07,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:07,162 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:12:07,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:07,375 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:12:07,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07 WrapperNode [2019-10-13 21:12:07,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:07,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:12:07,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:12:07,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:12:07,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... [2019-10-13 21:12:07,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:12:07,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:12:07,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:12:07,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:12:07,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:07,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:12:07,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:12:07,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:07,696 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:12:07,696 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:12:07,697 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:12:07,697 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:12:07,698 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:12:07,698 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:12:07,699 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:12:07,699 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:12:07,699 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:12:07,700 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:12:07,700 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:12:07,701 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:12:07,701 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:12:07,703 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:12:07,703 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:12:07,704 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:12:07,704 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:12:07,704 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:12:07,705 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:12:07,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:12:07,705 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:12:07,705 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:12:07,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:12:07,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:12:07,706 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:12:07,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:12:07,707 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:12:07,707 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:12:07,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:12:07,708 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 21:12:07,708 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:12:07,708 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 21:12:07,708 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 21:12:07,709 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:12:07,709 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:12:07,709 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:12:07,709 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:12:07,710 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:12:07,710 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:12:07,710 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:12:07,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:12:07,711 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:12:07,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:12:07,711 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:12:07,711 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:12:07,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:12:07,712 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:12:07,712 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:12:07,712 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:12:07,713 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:12:07,713 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:12:07,713 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-13 21:12:07,713 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:12:07,714 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-13 21:12:07,714 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:12:07,714 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:12:07,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:07,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:07,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:07,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:12:07,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:12:07,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:12:07,717 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:12:07,717 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:12:07,718 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:12:07,718 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:12:07,718 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:12:07,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:12:07,719 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:12:07,719 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:12:07,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:12:07,720 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:12:07,720 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:12:07,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:12:07,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:12:07,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:12:07,722 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:12:07,722 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:12:07,722 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:12:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:12:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:12:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:12:07,724 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:12:07,724 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:12:07,724 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:12:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:12:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:12:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:12:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:12:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:12:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:12:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:12:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:12:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:12:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:12:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:12:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:12:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:12:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:12:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:12:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:12:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:12:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:12:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:12:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:12:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:12:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:12:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:12:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:12:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:12:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:12:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:12:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:12:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:12:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:12:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:12:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:12:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:12:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:12:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:12:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:12:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:12:07,732 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:12:07,732 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:12:07,732 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:12:07,732 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:12:07,732 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:12:07,733 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 21:12:07,733 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 21:12:07,733 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 21:12:07,733 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:12:07,734 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:12:07,734 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:12:07,734 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:12:07,734 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:12:07,735 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:12:07,735 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:12:07,735 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:12:07,735 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:12:07,735 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:12:07,735 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:12:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-13 21:12:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-13 21:12:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:12:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:12:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:12:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:12:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:12:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:12:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:12:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:12:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:12:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:12:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:12:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:12:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:12:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:12:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:12:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:12:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:12:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:12:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:12:10,416 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:12:10,416 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:12:10,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:10 BoogieIcfgContainer [2019-10-13 21:12:10,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:12:10,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:12:10,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:12:10,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:12:10,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:12:06" (1/3) ... [2019-10-13 21:12:10,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c328054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:10, skipping insertion in model container [2019-10-13 21:12:10,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:07" (2/3) ... [2019-10-13 21:12:10,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c328054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:10, skipping insertion in model container [2019-10-13 21:12:10,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:10" (3/3) ... [2019-10-13 21:12:10,429 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product30.cil.c [2019-10-13 21:12:10,439 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:12:10,449 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:12:10,462 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:12:10,496 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:12:10,496 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:12:10,496 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:12:10,497 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:12:10,497 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:12:10,497 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:12:10,497 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:12:10,497 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:12:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states. [2019-10-13 21:12:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 21:12:10,550 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:10,551 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:10,553 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:10,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:10,560 INFO L82 PathProgramCache]: Analyzing trace with hash -517745057, now seen corresponding path program 1 times [2019-10-13 21:12:10,569 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:10,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887317227] [2019-10-13 21:12:10,569 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:10,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:10,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:11,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887317227] [2019-10-13 21:12:11,277 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:11,278 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:11,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425052523] [2019-10-13 21:12:11,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:11,285 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:11,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:11,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:11,304 INFO L87 Difference]: Start difference. First operand 828 states. Second operand 7 states. [2019-10-13 21:12:11,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:11,699 INFO L93 Difference]: Finished difference Result 1321 states and 2124 transitions. [2019-10-13 21:12:11,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:11,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-10-13 21:12:11,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:11,740 INFO L225 Difference]: With dead ends: 1321 [2019-10-13 21:12:11,740 INFO L226 Difference]: Without dead ends: 669 [2019-10-13 21:12:11,756 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2019-10-13 21:12:11,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 667. [2019-10-13 21:12:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2019-10-13 21:12:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1057 transitions. [2019-10-13 21:12:11,938 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1057 transitions. Word has length 93 [2019-10-13 21:12:11,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:11,939 INFO L462 AbstractCegarLoop]: Abstraction has 667 states and 1057 transitions. [2019-10-13 21:12:11,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1057 transitions. [2019-10-13 21:12:11,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:12:11,966 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:11,966 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:11,967 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:11,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:11,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1718929765, now seen corresponding path program 1 times [2019-10-13 21:12:11,969 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:11,969 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130007702] [2019-10-13 21:12:11,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:11,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:11,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:12,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130007702] [2019-10-13 21:12:12,219 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:12,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:12,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51433679] [2019-10-13 21:12:12,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:12,221 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:12,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:12,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:12,222 INFO L87 Difference]: Start difference. First operand 667 states and 1057 transitions. Second operand 4 states. [2019-10-13 21:12:12,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:12,301 INFO L93 Difference]: Finished difference Result 1300 states and 2079 transitions. [2019-10-13 21:12:12,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:12,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-13 21:12:12,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:12,308 INFO L225 Difference]: With dead ends: 1300 [2019-10-13 21:12:12,308 INFO L226 Difference]: Without dead ends: 649 [2019-10-13 21:12:12,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:12,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2019-10-13 21:12:12,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 649. [2019-10-13 21:12:12,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2019-10-13 21:12:12,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1024 transitions. [2019-10-13 21:12:12,346 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1024 transitions. Word has length 94 [2019-10-13 21:12:12,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:12,346 INFO L462 AbstractCegarLoop]: Abstraction has 649 states and 1024 transitions. [2019-10-13 21:12:12,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:12,404 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1024 transitions. [2019-10-13 21:12:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:12:12,407 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:12,408 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:12,408 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:12,409 INFO L82 PathProgramCache]: Analyzing trace with hash -495368691, now seen corresponding path program 1 times [2019-10-13 21:12:12,409 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:12,409 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330040722] [2019-10-13 21:12:12,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:12,410 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:12,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:12,597 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330040722] [2019-10-13 21:12:12,598 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:12,598 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:12,598 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322222523] [2019-10-13 21:12:12,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:12,601 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:12,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:12,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:12,602 INFO L87 Difference]: Start difference. First operand 649 states and 1024 transitions. Second operand 7 states. [2019-10-13 21:12:12,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:12,739 INFO L93 Difference]: Finished difference Result 1269 states and 2021 transitions. [2019-10-13 21:12:12,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:12,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2019-10-13 21:12:12,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:12,747 INFO L225 Difference]: With dead ends: 1269 [2019-10-13 21:12:12,747 INFO L226 Difference]: Without dead ends: 643 [2019-10-13 21:12:12,751 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:12,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-13 21:12:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-13 21:12:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-13 21:12:12,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1011 transitions. [2019-10-13 21:12:12,785 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1011 transitions. Word has length 94 [2019-10-13 21:12:12,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:12,787 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 1011 transitions. [2019-10-13 21:12:12,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1011 transitions. [2019-10-13 21:12:12,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 21:12:12,789 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:12,790 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:12,790 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:12,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:12,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1956512957, now seen corresponding path program 1 times [2019-10-13 21:12:12,791 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:12,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725318990] [2019-10-13 21:12:12,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:12,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:12,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:13,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725318990] [2019-10-13 21:12:13,007 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:13,007 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:13,008 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401962484] [2019-10-13 21:12:13,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:13,008 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:13,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:13,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:13,010 INFO L87 Difference]: Start difference. First operand 643 states and 1011 transitions. Second operand 7 states. [2019-10-13 21:12:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:13,113 INFO L93 Difference]: Finished difference Result 1257 states and 1995 transitions. [2019-10-13 21:12:13,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:13,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-13 21:12:13,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:13,126 INFO L225 Difference]: With dead ends: 1257 [2019-10-13 21:12:13,126 INFO L226 Difference]: Without dead ends: 637 [2019-10-13 21:12:13,131 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:13,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-10-13 21:12:13,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2019-10-13 21:12:13,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2019-10-13 21:12:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 998 transitions. [2019-10-13 21:12:13,159 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 998 transitions. Word has length 95 [2019-10-13 21:12:13,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:13,160 INFO L462 AbstractCegarLoop]: Abstraction has 637 states and 998 transitions. [2019-10-13 21:12:13,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 998 transitions. [2019-10-13 21:12:13,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:12:13,162 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:13,162 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:13,162 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:13,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:13,163 INFO L82 PathProgramCache]: Analyzing trace with hash 2132810737, now seen corresponding path program 1 times [2019-10-13 21:12:13,163 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:13,163 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378491423] [2019-10-13 21:12:13,163 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,163 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:13,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:13,394 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378491423] [2019-10-13 21:12:13,395 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:13,395 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:13,395 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731874004] [2019-10-13 21:12:13,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:13,397 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:13,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:13,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:13,398 INFO L87 Difference]: Start difference. First operand 637 states and 998 transitions. Second operand 7 states. [2019-10-13 21:12:13,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:13,509 INFO L93 Difference]: Finished difference Result 1245 states and 1969 transitions. [2019-10-13 21:12:13,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:13,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-13 21:12:13,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:13,522 INFO L225 Difference]: With dead ends: 1245 [2019-10-13 21:12:13,523 INFO L226 Difference]: Without dead ends: 631 [2019-10-13 21:12:13,530 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-10-13 21:12:13,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-10-13 21:12:13,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-10-13 21:12:13,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 985 transitions. [2019-10-13 21:12:13,560 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 985 transitions. Word has length 96 [2019-10-13 21:12:13,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:13,561 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 985 transitions. [2019-10-13 21:12:13,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:13,561 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 985 transitions. [2019-10-13 21:12:13,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:12:13,563 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:13,563 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:13,564 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:13,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:13,567 INFO L82 PathProgramCache]: Analyzing trace with hash -773214734, now seen corresponding path program 1 times [2019-10-13 21:12:13,568 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:13,568 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629429182] [2019-10-13 21:12:13,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,569 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:13,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629429182] [2019-10-13 21:12:13,743 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:13,743 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:13,743 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191000976] [2019-10-13 21:12:13,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:13,744 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:13,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:13,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:13,745 INFO L87 Difference]: Start difference. First operand 631 states and 985 transitions. Second operand 7 states. [2019-10-13 21:12:13,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:13,835 INFO L93 Difference]: Finished difference Result 1233 states and 1943 transitions. [2019-10-13 21:12:13,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:13,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-13 21:12:13,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:13,844 INFO L225 Difference]: With dead ends: 1233 [2019-10-13 21:12:13,845 INFO L226 Difference]: Without dead ends: 631 [2019-10-13 21:12:13,848 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:13,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-10-13 21:12:13,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-10-13 21:12:13,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-10-13 21:12:13,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 984 transitions. [2019-10-13 21:12:13,878 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 984 transitions. Word has length 96 [2019-10-13 21:12:13,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:13,879 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 984 transitions. [2019-10-13 21:12:13,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:13,880 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 984 transitions. [2019-10-13 21:12:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 21:12:13,882 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:13,882 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:13,882 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:13,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:13,883 INFO L82 PathProgramCache]: Analyzing trace with hash -2101985241, now seen corresponding path program 1 times [2019-10-13 21:12:13,883 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:13,883 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003697005] [2019-10-13 21:12:13,884 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,884 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:13,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:14,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003697005] [2019-10-13 21:12:14,015 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:14,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:14,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308787735] [2019-10-13 21:12:14,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:14,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:14,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:14,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:14,017 INFO L87 Difference]: Start difference. First operand 631 states and 984 transitions. Second operand 5 states. [2019-10-13 21:12:14,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:14,098 INFO L93 Difference]: Finished difference Result 1232 states and 1940 transitions. [2019-10-13 21:12:14,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:14,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-10-13 21:12:14,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:14,104 INFO L225 Difference]: With dead ends: 1232 [2019-10-13 21:12:14,104 INFO L226 Difference]: Without dead ends: 631 [2019-10-13 21:12:14,108 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:14,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-10-13 21:12:14,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-10-13 21:12:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-10-13 21:12:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 983 transitions. [2019-10-13 21:12:14,131 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 983 transitions. Word has length 97 [2019-10-13 21:12:14,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:14,132 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 983 transitions. [2019-10-13 21:12:14,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:14,132 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 983 transitions. [2019-10-13 21:12:14,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 21:12:14,134 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:14,134 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:14,134 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:14,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1046303197, now seen corresponding path program 1 times [2019-10-13 21:12:14,135 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:14,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166639996] [2019-10-13 21:12:14,135 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,135 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:14,369 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166639996] [2019-10-13 21:12:14,369 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:14,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:14,370 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008489704] [2019-10-13 21:12:14,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:14,370 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:14,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:14,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:14,372 INFO L87 Difference]: Start difference. First operand 631 states and 983 transitions. Second operand 5 states. [2019-10-13 21:12:14,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:14,455 INFO L93 Difference]: Finished difference Result 1232 states and 1938 transitions. [2019-10-13 21:12:14,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:14,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-10-13 21:12:14,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:14,461 INFO L225 Difference]: With dead ends: 1232 [2019-10-13 21:12:14,462 INFO L226 Difference]: Without dead ends: 631 [2019-10-13 21:12:14,466 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:14,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-10-13 21:12:14,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-10-13 21:12:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-10-13 21:12:14,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 982 transitions. [2019-10-13 21:12:14,492 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 982 transitions. Word has length 98 [2019-10-13 21:12:14,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:14,493 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 982 transitions. [2019-10-13 21:12:14,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:14,493 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 982 transitions. [2019-10-13 21:12:14,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 21:12:14,498 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:14,498 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:14,498 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:14,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:14,499 INFO L82 PathProgramCache]: Analyzing trace with hash -2126960382, now seen corresponding path program 1 times [2019-10-13 21:12:14,499 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:14,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462242629] [2019-10-13 21:12:14,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,500 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:14,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462242629] [2019-10-13 21:12:14,638 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:14,638 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:14,639 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501996806] [2019-10-13 21:12:14,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:14,640 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:14,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:14,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:14,642 INFO L87 Difference]: Start difference. First operand 631 states and 982 transitions. Second operand 5 states. [2019-10-13 21:12:14,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:14,729 INFO L93 Difference]: Finished difference Result 1232 states and 1936 transitions. [2019-10-13 21:12:14,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:14,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-10-13 21:12:14,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:14,739 INFO L225 Difference]: With dead ends: 1232 [2019-10-13 21:12:14,739 INFO L226 Difference]: Without dead ends: 631 [2019-10-13 21:12:14,744 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:14,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-10-13 21:12:14,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-10-13 21:12:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-10-13 21:12:14,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 981 transitions. [2019-10-13 21:12:14,797 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 981 transitions. Word has length 99 [2019-10-13 21:12:14,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:14,797 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 981 transitions. [2019-10-13 21:12:14,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 981 transitions. [2019-10-13 21:12:14,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 21:12:14,802 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:14,802 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:14,803 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:14,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:14,803 INFO L82 PathProgramCache]: Analyzing trace with hash -714656930, now seen corresponding path program 1 times [2019-10-13 21:12:14,803 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:14,804 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3269440] [2019-10-13 21:12:14,804 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,804 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:14,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:14,992 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3269440] [2019-10-13 21:12:14,993 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:14,994 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:12:14,994 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650857041] [2019-10-13 21:12:14,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:12:14,996 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:14,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:12:14,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:14,997 INFO L87 Difference]: Start difference. First operand 631 states and 981 transitions. Second operand 5 states. [2019-10-13 21:12:15,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:15,078 INFO L93 Difference]: Finished difference Result 1232 states and 1934 transitions. [2019-10-13 21:12:15,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:15,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-13 21:12:15,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:15,086 INFO L225 Difference]: With dead ends: 1232 [2019-10-13 21:12:15,087 INFO L226 Difference]: Without dead ends: 631 [2019-10-13 21:12:15,098 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:15,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-10-13 21:12:15,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2019-10-13 21:12:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-10-13 21:12:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 980 transitions. [2019-10-13 21:12:15,146 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 980 transitions. Word has length 100 [2019-10-13 21:12:15,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:15,148 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 980 transitions. [2019-10-13 21:12:15,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:12:15,149 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 980 transitions. [2019-10-13 21:12:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 21:12:15,152 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:15,152 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:15,152 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:15,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:15,153 INFO L82 PathProgramCache]: Analyzing trace with hash 670014941, now seen corresponding path program 1 times [2019-10-13 21:12:15,153 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:15,153 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458979221] [2019-10-13 21:12:15,153 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:12:15,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458979221] [2019-10-13 21:12:15,540 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224135973] [2019-10-13 21:12:15,540 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 [2019-10-13 21:12:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:16,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:12:16,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:16,239 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:16,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:16,382 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:16,382 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:12:16,382 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187451769] [2019-10-13 21:12:16,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:16,383 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:16,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:16,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:16,384 INFO L87 Difference]: Start difference. First operand 631 states and 980 transitions. Second operand 3 states. [2019-10-13 21:12:16,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:16,475 INFO L93 Difference]: Finished difference Result 1772 states and 2800 transitions. [2019-10-13 21:12:16,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:16,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2019-10-13 21:12:16,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:16,487 INFO L225 Difference]: With dead ends: 1772 [2019-10-13 21:12:16,488 INFO L226 Difference]: Without dead ends: 1175 [2019-10-13 21:12:16,492 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:16,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2019-10-13 21:12:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1162. [2019-10-13 21:12:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1162 states. [2019-10-13 21:12:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1823 transitions. [2019-10-13 21:12:16,617 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1823 transitions. Word has length 101 [2019-10-13 21:12:16,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:16,621 INFO L462 AbstractCegarLoop]: Abstraction has 1162 states and 1823 transitions. [2019-10-13 21:12:16,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1823 transitions. [2019-10-13 21:12:16,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 21:12:16,624 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:16,624 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:16,833 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:16,834 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:16,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:16,834 INFO L82 PathProgramCache]: Analyzing trace with hash 758547314, now seen corresponding path program 1 times [2019-10-13 21:12:16,835 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:16,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761016912] [2019-10-13 21:12:16,835 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:16,835 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:16,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:16,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761016912] [2019-10-13 21:12:16,994 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:16,994 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:16,994 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239984450] [2019-10-13 21:12:16,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:16,995 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:16,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:16,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:16,995 INFO L87 Difference]: Start difference. First operand 1162 states and 1823 transitions. Second operand 7 states. [2019-10-13 21:12:20,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:20,095 INFO L93 Difference]: Finished difference Result 3412 states and 5514 transitions. [2019-10-13 21:12:20,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:12:20,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2019-10-13 21:12:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:20,113 INFO L225 Difference]: With dead ends: 3412 [2019-10-13 21:12:20,113 INFO L226 Difference]: Without dead ends: 2284 [2019-10-13 21:12:20,121 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:12:20,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2019-10-13 21:12:20,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 2218. [2019-10-13 21:12:20,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2218 states. [2019-10-13 21:12:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3559 transitions. [2019-10-13 21:12:20,241 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3559 transitions. Word has length 105 [2019-10-13 21:12:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:20,242 INFO L462 AbstractCegarLoop]: Abstraction has 2218 states and 3559 transitions. [2019-10-13 21:12:20,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3559 transitions. [2019-10-13 21:12:20,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-13 21:12:20,244 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:20,244 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:20,244 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:20,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:20,245 INFO L82 PathProgramCache]: Analyzing trace with hash -60893374, now seen corresponding path program 1 times [2019-10-13 21:12:20,245 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:20,245 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407029634] [2019-10-13 21:12:20,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:20,246 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:20,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:12:20,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407029634] [2019-10-13 21:12:20,429 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306407780] [2019-10-13 21:12:20,429 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 [2019-10-13 21:12:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:21,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 2952 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:12:21,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:21,057 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:21,182 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:21,183 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:12:21,183 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180162609] [2019-10-13 21:12:21,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:21,185 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:21,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:21,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:21,186 INFO L87 Difference]: Start difference. First operand 2218 states and 3559 transitions. Second operand 3 states. [2019-10-13 21:12:21,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:21,339 INFO L93 Difference]: Finished difference Result 5472 states and 8864 transitions. [2019-10-13 21:12:21,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:21,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-10-13 21:12:21,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:21,367 INFO L225 Difference]: With dead ends: 5472 [2019-10-13 21:12:21,367 INFO L226 Difference]: Without dead ends: 3288 [2019-10-13 21:12:21,379 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:21,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3288 states. [2019-10-13 21:12:21,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3288 to 3188. [2019-10-13 21:12:21,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3188 states. [2019-10-13 21:12:21,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 5133 transitions. [2019-10-13 21:12:21,554 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 5133 transitions. Word has length 102 [2019-10-13 21:12:21,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:21,555 INFO L462 AbstractCegarLoop]: Abstraction has 3188 states and 5133 transitions. [2019-10-13 21:12:21,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:21,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 5133 transitions. [2019-10-13 21:12:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 21:12:21,557 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:21,557 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:21,768 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:21,768 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:21,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:21,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1784972550, now seen corresponding path program 1 times [2019-10-13 21:12:21,769 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:21,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877931134] [2019-10-13 21:12:21,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:21,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:21,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:12:21,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877931134] [2019-10-13 21:12:21,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294519326] [2019-10-13 21:12:21,961 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 [2019-10-13 21:12:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:22,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:12:22,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:22,644 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:22,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:12:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:23,001 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:23,001 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-13 21:12:23,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889629369] [2019-10-13 21:12:23,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:12:23,005 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:23,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:12:23,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:12:23,005 INFO L87 Difference]: Start difference. First operand 3188 states and 5133 transitions. Second operand 11 states. [2019-10-13 21:12:27,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:27,680 INFO L93 Difference]: Finished difference Result 14278 states and 23484 transitions. [2019-10-13 21:12:27,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:12:27,680 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2019-10-13 21:12:27,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:27,803 INFO L225 Difference]: With dead ends: 14278 [2019-10-13 21:12:27,804 INFO L226 Difference]: Without dead ends: 11124 [2019-10-13 21:12:27,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:12:27,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11124 states. [2019-10-13 21:12:28,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11124 to 11004. [2019-10-13 21:12:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11004 states. [2019-10-13 21:12:28,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11004 states to 11004 states and 17646 transitions. [2019-10-13 21:12:28,379 INFO L78 Accepts]: Start accepts. Automaton has 11004 states and 17646 transitions. Word has length 105 [2019-10-13 21:12:28,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:28,380 INFO L462 AbstractCegarLoop]: Abstraction has 11004 states and 17646 transitions. [2019-10-13 21:12:28,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:12:28,380 INFO L276 IsEmpty]: Start isEmpty. Operand 11004 states and 17646 transitions. [2019-10-13 21:12:28,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 21:12:28,382 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:28,382 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:28,589 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:28,590 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:28,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:28,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1620322121, now seen corresponding path program 1 times [2019-10-13 21:12:28,591 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:28,592 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852132326] [2019-10-13 21:12:28,592 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:28,592 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:28,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:28,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852132326] [2019-10-13 21:12:28,823 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:28,823 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:28,824 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667780609] [2019-10-13 21:12:28,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:28,824 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:28,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:28,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:28,825 INFO L87 Difference]: Start difference. First operand 11004 states and 17646 transitions. Second operand 4 states. [2019-10-13 21:12:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:29,207 INFO L93 Difference]: Finished difference Result 21992 states and 35591 transitions. [2019-10-13 21:12:29,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:29,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-10-13 21:12:29,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:29,301 INFO L225 Difference]: With dead ends: 21992 [2019-10-13 21:12:29,301 INFO L226 Difference]: Without dead ends: 11022 [2019-10-13 21:12:29,353 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:29,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11022 states. [2019-10-13 21:12:29,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11022 to 10986. [2019-10-13 21:12:29,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10986 states. [2019-10-13 21:12:29,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10986 states to 10986 states and 17545 transitions. [2019-10-13 21:12:29,788 INFO L78 Accepts]: Start accepts. Automaton has 10986 states and 17545 transitions. Word has length 105 [2019-10-13 21:12:29,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:29,789 INFO L462 AbstractCegarLoop]: Abstraction has 10986 states and 17545 transitions. [2019-10-13 21:12:29,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:29,789 INFO L276 IsEmpty]: Start isEmpty. Operand 10986 states and 17545 transitions. [2019-10-13 21:12:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 21:12:29,792 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:29,792 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:12:29,793 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:29,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:29,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1143886479, now seen corresponding path program 1 times [2019-10-13 21:12:29,793 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:29,794 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051069723] [2019-10-13 21:12:29,794 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:29,794 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:29,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:29,962 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 21:12:29,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051069723] [2019-10-13 21:12:29,963 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:29,963 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:29,963 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767076310] [2019-10-13 21:12:29,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:29,965 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:29,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:29,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:29,965 INFO L87 Difference]: Start difference. First operand 10986 states and 17545 transitions. Second operand 7 states. [2019-10-13 21:12:32,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:32,906 INFO L93 Difference]: Finished difference Result 32938 states and 54494 transitions. [2019-10-13 21:12:32,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:12:32,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 21:12:32,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:33,099 INFO L225 Difference]: With dead ends: 32938 [2019-10-13 21:12:33,099 INFO L226 Difference]: Without dead ends: 21986 [2019-10-13 21:12:33,162 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:12:33,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21986 states. [2019-10-13 21:12:34,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21986 to 21800. [2019-10-13 21:12:34,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21800 states. [2019-10-13 21:12:34,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21800 states to 21800 states and 35491 transitions. [2019-10-13 21:12:34,193 INFO L78 Accepts]: Start accepts. Automaton has 21800 states and 35491 transitions. Word has length 113 [2019-10-13 21:12:34,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:34,195 INFO L462 AbstractCegarLoop]: Abstraction has 21800 states and 35491 transitions. [2019-10-13 21:12:34,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:34,196 INFO L276 IsEmpty]: Start isEmpty. Operand 21800 states and 35491 transitions. [2019-10-13 21:12:34,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-13 21:12:34,198 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:34,198 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:12:34,198 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:34,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:34,199 INFO L82 PathProgramCache]: Analyzing trace with hash -367218449, now seen corresponding path program 1 times [2019-10-13 21:12:34,199 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:34,199 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588272381] [2019-10-13 21:12:34,199 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:34,200 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:34,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:12:34,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588272381] [2019-10-13 21:12:34,313 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:34,314 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:34,314 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96804765] [2019-10-13 21:12:34,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:34,315 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:34,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:34,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:34,315 INFO L87 Difference]: Start difference. First operand 21800 states and 35491 transitions. Second operand 4 states. [2019-10-13 21:12:35,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:35,762 INFO L93 Difference]: Finished difference Result 43674 states and 71885 transitions. [2019-10-13 21:12:35,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:35,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-10-13 21:12:35,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:35,914 INFO L225 Difference]: With dead ends: 43674 [2019-10-13 21:12:35,914 INFO L226 Difference]: Without dead ends: 21905 [2019-10-13 21:12:35,989 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:36,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21905 states. [2019-10-13 21:12:36,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21905 to 21831. [2019-10-13 21:12:36,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21831 states. [2019-10-13 21:12:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21831 states to 21831 states and 35404 transitions. [2019-10-13 21:12:36,790 INFO L78 Accepts]: Start accepts. Automaton has 21831 states and 35404 transitions. Word has length 114 [2019-10-13 21:12:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:36,790 INFO L462 AbstractCegarLoop]: Abstraction has 21831 states and 35404 transitions. [2019-10-13 21:12:36,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 21831 states and 35404 transitions. [2019-10-13 21:12:36,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 21:12:36,792 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:36,793 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:36,793 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:36,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:36,793 INFO L82 PathProgramCache]: Analyzing trace with hash 835770959, now seen corresponding path program 1 times [2019-10-13 21:12:36,794 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:36,794 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774866140] [2019-10-13 21:12:36,794 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:36,794 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:36,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:12:36,981 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774866140] [2019-10-13 21:12:36,981 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726427296] [2019-10-13 21:12:36,981 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