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_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:11:45,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:11:45,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:11:45,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:11:45,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:11:45,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:11:45,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:11:45,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:11:45,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:11:45,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:11:45,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:11:45,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:11:45,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:11:45,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:11:45,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:11:45,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:11:45,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:11:45,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:11:45,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:11:45,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:11:45,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:11:45,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:11:45,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:11:45,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:11:45,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:11:45,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:11:45,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:11:45,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:11:45,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:11:45,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:11:45,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:11:45,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:11:45,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:11:45,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:11:45,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:11:45,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:11:45,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:11:45,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:11:45,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:11:45,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:11:45,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:11:45,916 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 21:11:45,952 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:11:45,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:11:45,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:11:45,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:11:45,956 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:11:45,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:11:45,957 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:11:45,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:11:45,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:11:45,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:11:45,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:11:45,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:11:45,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:11:45,962 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:11:45,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:11:45,962 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:11:45,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:11:45,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:11:45,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:11:45,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:11:45,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:11:45,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:11:45,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:11:45,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:11:45,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:11:45,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:11:45,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:11:45,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:11:45,965 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 21:11:46,228 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:11:46,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:11:46,243 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:11:46,244 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:11:46,244 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:11:46,245 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product27.cil.c [2019-10-13 21:11:46,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1aa3acce/ea285e2cbfb447b3a52a998c428674fd/FLAG281fc35ca [2019-10-13 21:11:46,965 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:11:46,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product27.cil.c [2019-10-13 21:11:46,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1aa3acce/ea285e2cbfb447b3a52a998c428674fd/FLAG281fc35ca [2019-10-13 21:11:47,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1aa3acce/ea285e2cbfb447b3a52a998c428674fd [2019-10-13 21:11:47,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:11:47,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:11:47,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:11:47,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:11:47,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:11:47,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:11:47" (1/1) ... [2019-10-13 21:11:47,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af1711a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:47, skipping insertion in model container [2019-10-13 21:11:47,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:11:47" (1/1) ... [2019-10-13 21:11:47,197 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:11:47,292 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:11:48,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:11:48,067 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:11:48,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:11:48,353 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:11:48,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48 WrapperNode [2019-10-13 21:11:48,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:11:48,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:11:48,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:11:48,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:11:48,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (1/1) ... [2019-10-13 21:11:48,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (1/1) ... [2019-10-13 21:11:48,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (1/1) ... [2019-10-13 21:11:48,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (1/1) ... [2019-10-13 21:11:48,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (1/1) ... [2019-10-13 21:11:48,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (1/1) ... [2019-10-13 21:11:48,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (1/1) ... [2019-10-13 21:11:48,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:11:48,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:11:48,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:11:48,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:11:48,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (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 21:11:48,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:11:48,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:11:48,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:11:48,693 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:11:48,693 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:11:48,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:11:48,694 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 21:11:48,695 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:11:48,695 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 21:11:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 21:11:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:11:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:11:48,697 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:11:48,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:11:48,698 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:11:48,698 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:11:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:11:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:11:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:11:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:11:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:11:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:11:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:11:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:11:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:11:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:11:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:11:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:11:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:11:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:11:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:11:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 21:11:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 21:11:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:11:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:11:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:11:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:11:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:11:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:11:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:11:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:11:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:11:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:11:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:11:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:11:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:11:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:11:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:11:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:11:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:11:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:11:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:11:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:11:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:11:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:11:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:11:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:11:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:11:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:11:48,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:11:48,709 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:11:48,709 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:11:48,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:11:48,709 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:11:48,710 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:11:48,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:11:48,710 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:11:48,710 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:11:48,710 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:11:48,711 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:11:48,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:11:48,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:11:48,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:11:48,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:11:48,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:11:48,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:11:48,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:11:48,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:11:48,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:11:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:11:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:11:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:11:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:11:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:11:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:11:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:11:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:11:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:11:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:11:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:11:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:11:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:11:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:11:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:11:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:11:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:11:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:11:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:11:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:11:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:11:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 21:11:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 21:11:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 21:11:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 21:11:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 21:11:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:11:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:11:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:11:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:11:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:11:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:11:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:11:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:11:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:11:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:11:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:11:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:11:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:11:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:11:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:11:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:11:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:11:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:11:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:11:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:11:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:11:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:11:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:11:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:11:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:11:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:11:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:11:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:11:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:11:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:11:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:11:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:11:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:11:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:11:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:11:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:11:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:11:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:11:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:11:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:11:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:11:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:11:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:11:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:11:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:11:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:11:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:11:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:11:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:11:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:11:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:11:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:11:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:11:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:11:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:11:48,727 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:11:48,728 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:11:48,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:11:48,728 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:11:48,728 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:11:48,728 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:11:48,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:11:48,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:11:48,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:11:50,996 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:11:50,997 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:11:50,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:11:50 BoogieIcfgContainer [2019-10-13 21:11:51,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:11:51,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:11:51,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:11:51,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:11:51,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:11:47" (1/3) ... [2019-10-13 21:11:51,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ffac15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:11:51, skipping insertion in model container [2019-10-13 21:11:51,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (2/3) ... [2019-10-13 21:11:51,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ffac15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:11:51, skipping insertion in model container [2019-10-13 21:11:51,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:11:50" (3/3) ... [2019-10-13 21:11:51,008 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product27.cil.c [2019-10-13 21:11:51,019 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:11:51,030 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:11:51,042 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:11:51,093 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:11:51,093 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:11:51,094 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:11:51,094 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:11:51,094 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:11:51,094 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:11:51,094 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:11:51,094 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:11:51,140 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states. [2019-10-13 21:11:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 21:11:51,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:51,168 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:51,171 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:51,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:51,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1573274130, now seen corresponding path program 1 times [2019-10-13 21:11:51,188 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:51,188 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775286357] [2019-10-13 21:11:51,188 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:51,189 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:51,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:11:51,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775286357] [2019-10-13 21:11:51,923 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:51,923 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:51,924 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256000760] [2019-10-13 21:11:51,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:51,932 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:51,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:51,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:51,949 INFO L87 Difference]: Start difference. First operand 806 states. Second operand 7 states. [2019-10-13 21:11:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:52,286 INFO L93 Difference]: Finished difference Result 1291 states and 2080 transitions. [2019-10-13 21:11:52,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:52,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2019-10-13 21:11:52,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:52,335 INFO L225 Difference]: With dead ends: 1291 [2019-10-13 21:11:52,335 INFO L226 Difference]: Without dead ends: 654 [2019-10-13 21:11:52,351 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 21:11:52,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-10-13 21:11:52,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 652. [2019-10-13 21:11:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2019-10-13 21:11:52,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1035 transitions. [2019-10-13 21:11:52,469 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1035 transitions. Word has length 141 [2019-10-13 21:11:52,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:52,470 INFO L462 AbstractCegarLoop]: Abstraction has 652 states and 1035 transitions. [2019-10-13 21:11:52,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1035 transitions. [2019-10-13 21:11:52,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 21:11:52,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:52,481 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:52,481 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:52,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:52,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2025459655, now seen corresponding path program 1 times [2019-10-13 21:11:52,482 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:52,482 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777897576] [2019-10-13 21:11:52,482 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:52,482 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:52,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:11:52,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777897576] [2019-10-13 21:11:52,761 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:52,761 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:52,762 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544839680] [2019-10-13 21:11:52,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:52,767 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:52,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:52,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:52,768 INFO L87 Difference]: Start difference. First operand 652 states and 1035 transitions. Second operand 4 states. [2019-10-13 21:11:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:52,877 INFO L93 Difference]: Finished difference Result 1270 states and 2035 transitions. [2019-10-13 21:11:52,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:52,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-10-13 21:11:52,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:52,885 INFO L225 Difference]: With dead ends: 1270 [2019-10-13 21:11:52,885 INFO L226 Difference]: Without dead ends: 634 [2019-10-13 21:11:52,890 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 21:11:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-10-13 21:11:52,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2019-10-13 21:11:52,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2019-10-13 21:11:52,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1002 transitions. [2019-10-13 21:11:52,958 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1002 transitions. Word has length 142 [2019-10-13 21:11:52,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:52,960 INFO L462 AbstractCegarLoop]: Abstraction has 634 states and 1002 transitions. [2019-10-13 21:11:52,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:52,961 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1002 transitions. [2019-10-13 21:11:52,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 21:11:52,983 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:52,984 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:52,984 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:52,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:52,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1890862467, now seen corresponding path program 1 times [2019-10-13 21:11:52,984 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:52,985 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858069727] [2019-10-13 21:11:52,985 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:52,985 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:52,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:11:53,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858069727] [2019-10-13 21:11:53,234 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:53,234 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:53,234 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499757750] [2019-10-13 21:11:53,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:53,236 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:53,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:53,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:53,237 INFO L87 Difference]: Start difference. First operand 634 states and 1002 transitions. Second operand 7 states. [2019-10-13 21:11:53,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:53,377 INFO L93 Difference]: Finished difference Result 1239 states and 1977 transitions. [2019-10-13 21:11:53,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:53,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2019-10-13 21:11:53,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:53,385 INFO L225 Difference]: With dead ends: 1239 [2019-10-13 21:11:53,385 INFO L226 Difference]: Without dead ends: 628 [2019-10-13 21:11:53,390 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 21:11:53,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-13 21:11:53,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-10-13 21:11:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-13 21:11:53,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 989 transitions. [2019-10-13 21:11:53,436 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 989 transitions. Word has length 142 [2019-10-13 21:11:53,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:53,438 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 989 transitions. [2019-10-13 21:11:53,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:53,438 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 989 transitions. [2019-10-13 21:11:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 21:11:53,447 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:53,447 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:53,448 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:53,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:53,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1767299342, now seen corresponding path program 1 times [2019-10-13 21:11:53,448 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:53,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254985480] [2019-10-13 21:11:53,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:53,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:53,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:53,802 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:11:53,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254985480] [2019-10-13 21:11:53,803 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:53,803 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:53,803 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015299021] [2019-10-13 21:11:53,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:53,804 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:53,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:53,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:53,806 INFO L87 Difference]: Start difference. First operand 628 states and 989 transitions. Second operand 7 states. [2019-10-13 21:11:53,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:53,915 INFO L93 Difference]: Finished difference Result 1227 states and 1951 transitions. [2019-10-13 21:11:53,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:53,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2019-10-13 21:11:53,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:53,921 INFO L225 Difference]: With dead ends: 1227 [2019-10-13 21:11:53,921 INFO L226 Difference]: Without dead ends: 622 [2019-10-13 21:11:53,924 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 21:11:53,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-10-13 21:11:53,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-10-13 21:11:53,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-10-13 21:11:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 976 transitions. [2019-10-13 21:11:53,951 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 976 transitions. Word has length 143 [2019-10-13 21:11:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:53,951 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 976 transitions. [2019-10-13 21:11:53,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:53,951 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 976 transitions. [2019-10-13 21:11:53,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-13 21:11:53,957 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:53,957 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:53,958 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:53,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:53,958 INFO L82 PathProgramCache]: Analyzing trace with hash -852942783, now seen corresponding path program 1 times [2019-10-13 21:11:53,958 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:53,959 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438910068] [2019-10-13 21:11:53,959 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:53,959 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:53,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:11:54,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438910068] [2019-10-13 21:11:54,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:54,126 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:54,127 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254032647] [2019-10-13 21:11:54,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:54,127 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:54,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:54,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:54,128 INFO L87 Difference]: Start difference. First operand 622 states and 976 transitions. Second operand 7 states. [2019-10-13 21:11:54,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:54,226 INFO L93 Difference]: Finished difference Result 1215 states and 1925 transitions. [2019-10-13 21:11:54,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:54,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2019-10-13 21:11:54,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:54,241 INFO L225 Difference]: With dead ends: 1215 [2019-10-13 21:11:54,241 INFO L226 Difference]: Without dead ends: 616 [2019-10-13 21:11:54,245 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 21:11:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-13 21:11:54,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-10-13 21:11:54,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-10-13 21:11:54,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 963 transitions. [2019-10-13 21:11:54,268 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 963 transitions. Word has length 144 [2019-10-13 21:11:54,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:54,268 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 963 transitions. [2019-10-13 21:11:54,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:54,269 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 963 transitions. [2019-10-13 21:11:54,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-13 21:11:54,272 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:54,272 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:54,273 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:54,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:54,273 INFO L82 PathProgramCache]: Analyzing trace with hash -2091889598, now seen corresponding path program 1 times [2019-10-13 21:11:54,273 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:54,273 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401270953] [2019-10-13 21:11:54,274 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:54,274 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:54,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:11:54,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401270953] [2019-10-13 21:11:54,553 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:54,553 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:54,553 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669636120] [2019-10-13 21:11:54,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:54,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:54,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:54,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:54,555 INFO L87 Difference]: Start difference. First operand 616 states and 963 transitions. Second operand 7 states. [2019-10-13 21:11:54,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:54,659 INFO L93 Difference]: Finished difference Result 1203 states and 1899 transitions. [2019-10-13 21:11:54,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:54,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2019-10-13 21:11:54,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:54,667 INFO L225 Difference]: With dead ends: 1203 [2019-10-13 21:11:54,667 INFO L226 Difference]: Without dead ends: 616 [2019-10-13 21:11:54,671 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 21:11:54,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-13 21:11:54,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-10-13 21:11:54,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-10-13 21:11:54,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 962 transitions. [2019-10-13 21:11:54,698 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 962 transitions. Word has length 144 [2019-10-13 21:11:54,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:54,699 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 962 transitions. [2019-10-13 21:11:54,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:54,699 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 962 transitions. [2019-10-13 21:11:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 21:11:54,704 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:54,704 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:54,704 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:54,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:54,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1193793546, now seen corresponding path program 1 times [2019-10-13 21:11:54,705 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:54,705 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962665446] [2019-10-13 21:11:54,706 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:54,706 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:54,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:11:54,868 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962665446] [2019-10-13 21:11:54,868 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:54,868 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:54,869 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81031986] [2019-10-13 21:11:54,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:54,869 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:54,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:54,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:54,870 INFO L87 Difference]: Start difference. First operand 616 states and 962 transitions. Second operand 5 states. [2019-10-13 21:11:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:54,948 INFO L93 Difference]: Finished difference Result 1202 states and 1896 transitions. [2019-10-13 21:11:54,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:54,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2019-10-13 21:11:54,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:54,953 INFO L225 Difference]: With dead ends: 1202 [2019-10-13 21:11:54,954 INFO L226 Difference]: Without dead ends: 616 [2019-10-13 21:11:54,957 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 21:11:54,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-13 21:11:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-10-13 21:11:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-10-13 21:11:54,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 961 transitions. [2019-10-13 21:11:54,980 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 961 transitions. Word has length 145 [2019-10-13 21:11:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:54,980 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 961 transitions. [2019-10-13 21:11:54,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:54,981 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 961 transitions. [2019-10-13 21:11:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 21:11:54,984 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:54,984 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:54,985 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:54,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:54,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1917028761, now seen corresponding path program 1 times [2019-10-13 21:11:54,985 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:54,985 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396439591] [2019-10-13 21:11:54,986 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:54,986 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:54,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:11:55,125 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396439591] [2019-10-13 21:11:55,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:55,126 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:55,126 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643461498] [2019-10-13 21:11:55,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:55,127 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:55,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:55,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:55,128 INFO L87 Difference]: Start difference. First operand 616 states and 961 transitions. Second operand 5 states. [2019-10-13 21:11:55,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:55,249 INFO L93 Difference]: Finished difference Result 1202 states and 1894 transitions. [2019-10-13 21:11:55,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:55,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2019-10-13 21:11:55,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:55,255 INFO L225 Difference]: With dead ends: 1202 [2019-10-13 21:11:55,255 INFO L226 Difference]: Without dead ends: 616 [2019-10-13 21:11:55,258 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 21:11:55,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-13 21:11:55,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-10-13 21:11:55,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-10-13 21:11:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 960 transitions. [2019-10-13 21:11:55,281 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 960 transitions. Word has length 146 [2019-10-13 21:11:55,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:55,281 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 960 transitions. [2019-10-13 21:11:55,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 960 transitions. [2019-10-13 21:11:55,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 21:11:55,286 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:55,286 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:55,286 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:55,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:55,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1209344655, now seen corresponding path program 1 times [2019-10-13 21:11:55,287 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:55,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939218519] [2019-10-13 21:11:55,287 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:55,288 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:55,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:55,494 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:11:55,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939218519] [2019-10-13 21:11:55,495 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:55,495 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:55,495 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540813526] [2019-10-13 21:11:55,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:55,496 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:55,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:55,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:55,497 INFO L87 Difference]: Start difference. First operand 616 states and 960 transitions. Second operand 5 states. [2019-10-13 21:11:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:55,593 INFO L93 Difference]: Finished difference Result 1202 states and 1892 transitions. [2019-10-13 21:11:55,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:55,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-10-13 21:11:55,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:55,601 INFO L225 Difference]: With dead ends: 1202 [2019-10-13 21:11:55,601 INFO L226 Difference]: Without dead ends: 616 [2019-10-13 21:11:55,607 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 21:11:55,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-13 21:11:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-10-13 21:11:55,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-10-13 21:11:55,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 959 transitions. [2019-10-13 21:11:55,641 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 959 transitions. Word has length 147 [2019-10-13 21:11:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:55,642 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 959 transitions. [2019-10-13 21:11:55,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:55,642 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 959 transitions. [2019-10-13 21:11:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 21:11:55,648 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:55,648 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:55,649 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:55,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:55,649 INFO L82 PathProgramCache]: Analyzing trace with hash 907165442, now seen corresponding path program 1 times [2019-10-13 21:11:55,650 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:55,650 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963301068] [2019-10-13 21:11:55,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:55,651 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:55,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:55,845 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:11:55,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963301068] [2019-10-13 21:11:55,846 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:55,846 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:55,846 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457801253] [2019-10-13 21:11:55,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:55,848 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:55,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:55,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:55,848 INFO L87 Difference]: Start difference. First operand 616 states and 959 transitions. Second operand 5 states. [2019-10-13 21:11:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:55,930 INFO L93 Difference]: Finished difference Result 1202 states and 1890 transitions. [2019-10-13 21:11:55,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:55,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-10-13 21:11:55,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:55,937 INFO L225 Difference]: With dead ends: 1202 [2019-10-13 21:11:55,937 INFO L226 Difference]: Without dead ends: 616 [2019-10-13 21:11:55,940 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 21:11:55,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-13 21:11:55,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-10-13 21:11:55,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-10-13 21:11:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 958 transitions. [2019-10-13 21:11:55,972 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 958 transitions. Word has length 148 [2019-10-13 21:11:55,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:55,972 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 958 transitions. [2019-10-13 21:11:55,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:55,973 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 958 transitions. [2019-10-13 21:11:55,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 21:11:55,978 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:55,978 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:55,979 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:55,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:55,980 INFO L82 PathProgramCache]: Analyzing trace with hash -547358996, now seen corresponding path program 1 times [2019-10-13 21:11:55,980 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:55,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609223077] [2019-10-13 21:11:55,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:55,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:55,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:11:56,261 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609223077] [2019-10-13 21:11:56,261 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634159857] [2019-10-13 21:11:56,261 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 21:11:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:56,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:11:56,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:11:56,949 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:11:57,094 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:11:57,094 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:11:57,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859786406] [2019-10-13 21:11:57,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:11:57,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:57,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:11:57,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:57,096 INFO L87 Difference]: Start difference. First operand 616 states and 958 transitions. Second operand 3 states. [2019-10-13 21:11:57,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:57,186 INFO L93 Difference]: Finished difference Result 1727 states and 2734 transitions. [2019-10-13 21:11:57,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:11:57,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-13 21:11:57,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:57,195 INFO L225 Difference]: With dead ends: 1727 [2019-10-13 21:11:57,196 INFO L226 Difference]: Without dead ends: 1145 [2019-10-13 21:11:57,199 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 300 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 21:11:57,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2019-10-13 21:11:57,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1132. [2019-10-13 21:11:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1132 states. [2019-10-13 21:11:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1779 transitions. [2019-10-13 21:11:57,261 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1779 transitions. Word has length 149 [2019-10-13 21:11:57,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:57,262 INFO L462 AbstractCegarLoop]: Abstraction has 1132 states and 1779 transitions. [2019-10-13 21:11:57,262 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:11:57,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1779 transitions. [2019-10-13 21:11:57,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 21:11:57,269 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:57,269 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:57,478 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:57,479 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:57,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:57,479 INFO L82 PathProgramCache]: Analyzing trace with hash -726116884, now seen corresponding path program 1 times [2019-10-13 21:11:57,479 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:57,480 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779549526] [2019-10-13 21:11:57,480 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:57,480 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:57,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:11:57,764 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779549526] [2019-10-13 21:11:57,764 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929048623] [2019-10-13 21:11:57,765 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 21:11:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:58,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:11:58,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:11:58,615 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:11:58,762 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:11:58,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:11:58,762 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578872459] [2019-10-13 21:11:58,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:11:58,764 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:58,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:11:58,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:58,765 INFO L87 Difference]: Start difference. First operand 1132 states and 1779 transitions. Second operand 3 states. [2019-10-13 21:11:58,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:58,917 INFO L93 Difference]: Finished difference Result 2759 states and 4378 transitions. [2019-10-13 21:11:58,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:11:58,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2019-10-13 21:11:58,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:58,931 INFO L225 Difference]: With dead ends: 2759 [2019-10-13 21:11:58,931 INFO L226 Difference]: Without dead ends: 1661 [2019-10-13 21:11:58,937 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 302 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 21:11:58,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2019-10-13 21:11:58,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1612. [2019-10-13 21:11:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1612 states. [2019-10-13 21:11:59,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2553 transitions. [2019-10-13 21:11:59,007 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2553 transitions. Word has length 150 [2019-10-13 21:11:59,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:59,008 INFO L462 AbstractCegarLoop]: Abstraction has 1612 states and 2553 transitions. [2019-10-13 21:11:59,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:11:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2553 transitions. [2019-10-13 21:11:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 21:11:59,016 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:59,016 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:59,231 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:59,232 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:59,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:59,232 INFO L82 PathProgramCache]: Analyzing trace with hash -130993927, now seen corresponding path program 1 times [2019-10-13 21:11:59,233 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:59,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365879484] [2019-10-13 21:11:59,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:59,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:59,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:11:59,396 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365879484] [2019-10-13 21:11:59,396 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:59,396 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:59,397 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143267506] [2019-10-13 21:11:59,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:59,397 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:59,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:59,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:59,398 INFO L87 Difference]: Start difference. First operand 1612 states and 2553 transitions. Second operand 7 states. [2019-10-13 21:12:02,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:02,810 INFO L93 Difference]: Finished difference Result 4758 states and 7704 transitions. [2019-10-13 21:12:02,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:12:02,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2019-10-13 21:12:02,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:02,835 INFO L225 Difference]: With dead ends: 4758 [2019-10-13 21:12:02,835 INFO L226 Difference]: Without dead ends: 3180 [2019-10-13 21:12:02,845 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 21:12:02,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2019-10-13 21:12:02,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 3110. [2019-10-13 21:12:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2019-10-13 21:12:02,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 5017 transitions. [2019-10-13 21:12:02,995 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 5017 transitions. Word has length 152 [2019-10-13 21:12:02,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:02,996 INFO L462 AbstractCegarLoop]: Abstraction has 3110 states and 5017 transitions. [2019-10-13 21:12:02,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:02,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 5017 transitions. [2019-10-13 21:12:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-13 21:12:03,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:03,004 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:03,004 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:03,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:03,005 INFO L82 PathProgramCache]: Analyzing trace with hash 73623315, now seen corresponding path program 1 times [2019-10-13 21:12:03,005 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:03,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627380345] [2019-10-13 21:12:03,005 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:03,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:03,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:12:03,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627380345] [2019-10-13 21:12:03,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837442812] [2019-10-13 21:12:03,184 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 21:12:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:03,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 3089 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:12:03,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:12:03,875 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:04,040 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:12:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 21:12:04,235 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:12:04,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-13 21:12:04,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141929326] [2019-10-13 21:12:04,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:04,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:04,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:04,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:12:04,237 INFO L87 Difference]: Start difference. First operand 3110 states and 5017 transitions. Second operand 6 states. [2019-10-13 21:12:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:05,578 INFO L93 Difference]: Finished difference Result 8405 states and 13672 transitions. [2019-10-13 21:12:05,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:05,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2019-10-13 21:12:05,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:05,619 INFO L225 Difference]: With dead ends: 8405 [2019-10-13 21:12:05,619 INFO L226 Difference]: Without dead ends: 5329 [2019-10-13 21:12:05,643 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 298 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:12:05,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5329 states. [2019-10-13 21:12:05,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5329 to 5289. [2019-10-13 21:12:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5289 states. [2019-10-13 21:12:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 8379 transitions. [2019-10-13 21:12:05,899 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 8379 transitions. Word has length 153 [2019-10-13 21:12:05,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:05,900 INFO L462 AbstractCegarLoop]: Abstraction has 5289 states and 8379 transitions. [2019-10-13 21:12:05,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 8379 transitions. [2019-10-13 21:12:05,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-13 21:12:05,907 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:05,907 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:06,116 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:06,117 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:06,117 INFO L82 PathProgramCache]: Analyzing trace with hash -84502182, now seen corresponding path program 1 times [2019-10-13 21:12:06,117 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:06,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806756850] [2019-10-13 21:12:06,118 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:06,118 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:06,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:12:06,269 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806756850] [2019-10-13 21:12:06,270 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:06,270 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:06,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426657007] [2019-10-13 21:12:06,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:06,271 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:06,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:06,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:06,272 INFO L87 Difference]: Start difference. First operand 5289 states and 8379 transitions. Second operand 4 states. [2019-10-13 21:12:06,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:06,547 INFO L93 Difference]: Finished difference Result 10542 states and 16843 transitions. [2019-10-13 21:12:06,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:06,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2019-10-13 21:12:06,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:06,593 INFO L225 Difference]: With dead ends: 10542 [2019-10-13 21:12:06,593 INFO L226 Difference]: Without dead ends: 5287 [2019-10-13 21:12:06,633 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 21:12:06,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2019-10-13 21:12:07,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 5271. [2019-10-13 21:12:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5271 states. [2019-10-13 21:12:07,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5271 states to 5271 states and 8318 transitions. [2019-10-13 21:12:07,340 INFO L78 Accepts]: Start accepts. Automaton has 5271 states and 8318 transitions. Word has length 153 [2019-10-13 21:12:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:07,340 INFO L462 AbstractCegarLoop]: Abstraction has 5271 states and 8318 transitions. [2019-10-13 21:12:07,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5271 states and 8318 transitions. [2019-10-13 21:12:07,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 21:12:07,347 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:07,347 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 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 21:12:07,348 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:07,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:07,348 INFO L82 PathProgramCache]: Analyzing trace with hash -599533620, now seen corresponding path program 1 times [2019-10-13 21:12:07,348 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:07,349 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053045698] [2019-10-13 21:12:07,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:07,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:07,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:12:07,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053045698] [2019-10-13 21:12:07,522 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:07,522 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:07,523 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649499108] [2019-10-13 21:12:07,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:07,524 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:07,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:07,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:07,525 INFO L87 Difference]: Start difference. First operand 5271 states and 8318 transitions. Second operand 7 states. [2019-10-13 21:12:10,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:10,611 INFO L93 Difference]: Finished difference Result 15766 states and 25458 transitions. [2019-10-13 21:12:10,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:12:10,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2019-10-13 21:12:10,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:10,687 INFO L225 Difference]: With dead ends: 15766 [2019-10-13 21:12:10,687 INFO L226 Difference]: Without dead ends: 10529 [2019-10-13 21:12:10,707 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 21:12:10,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10529 states. [2019-10-13 21:12:11,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10529 to 10419. [2019-10-13 21:12:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10419 states. [2019-10-13 21:12:11,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10419 states to 10419 states and 16690 transitions. [2019-10-13 21:12:11,104 INFO L78 Accepts]: Start accepts. Automaton has 10419 states and 16690 transitions. Word has length 161 [2019-10-13 21:12:11,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:11,105 INFO L462 AbstractCegarLoop]: Abstraction has 10419 states and 16690 transitions. [2019-10-13 21:12:11,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:11,106 INFO L276 IsEmpty]: Start isEmpty. Operand 10419 states and 16690 transitions. [2019-10-13 21:12:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:12:11,111 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:11,112 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 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 21:12:11,112 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:11,112 INFO L82 PathProgramCache]: Analyzing trace with hash 2048439665, now seen corresponding path program 1 times [2019-10-13 21:12:11,113 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:11,113 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645029837] [2019-10-13 21:12:11,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:11,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:11,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 21:12:11,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645029837] [2019-10-13 21:12:11,236 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:11,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:11,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645191615] [2019-10-13 21:12:11,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:11,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:11,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:11,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:11,237 INFO L87 Difference]: Start difference. First operand 10419 states and 16690 transitions. Second operand 4 states. [2019-10-13 21:12:11,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:11,589 INFO L93 Difference]: Finished difference Result 20848 states and 33700 transitions. [2019-10-13 21:12:11,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:11,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2019-10-13 21:12:11,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:11,664 INFO L225 Difference]: With dead ends: 20848 [2019-10-13 21:12:11,664 INFO L226 Difference]: Without dead ends: 10460 [2019-10-13 21:12:11,702 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 21:12:11,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10460 states. [2019-10-13 21:12:12,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10460 to 10426. [2019-10-13 21:12:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10426 states. [2019-10-13 21:12:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10426 states to 10426 states and 16649 transitions. [2019-10-13 21:12:12,442 INFO L78 Accepts]: Start accepts. Automaton has 10426 states and 16649 transitions. Word has length 162 [2019-10-13 21:12:12,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:12,443 INFO L462 AbstractCegarLoop]: Abstraction has 10426 states and 16649 transitions. [2019-10-13 21:12:12,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:12,443 INFO L276 IsEmpty]: Start isEmpty. Operand 10426 states and 16649 transitions. [2019-10-13 21:12:12,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-10-13 21:12:12,452 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:12,452 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 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 21:12:12,453 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:12,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:12,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1870984643, now seen corresponding path program 1 times [2019-10-13 21:12:12,453 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:12,453 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890104180] [2019-10-13 21:12:12,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:12,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:12,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-10-13 21:12:12,712 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890104180] [2019-10-13 21:12:12,713 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117621433] [2019-10-13 21:12:12,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:13,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 3561 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:12:13,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:12:13,406 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:13,638 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-10-13 21:12:13,638 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:12:13,638 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13, 3] total 13 [2019-10-13 21:12:13,638 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689500436] [2019-10-13 21:12:13,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:13,640 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:13,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:13,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:12:13,640 INFO L87 Difference]: Start difference. First operand 10426 states and 16649 transitions. Second operand 3 states. [2019-10-13 21:12:14,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:14,290 INFO L93 Difference]: Finished difference Result 30880 states and 49758 transitions. [2019-10-13 21:12:14,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:14,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 256 [2019-10-13 21:12:14,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:14,431 INFO L225 Difference]: With dead ends: 30880 [2019-10-13 21:12:14,432 INFO L226 Difference]: Without dead ends: 20495 [2019-10-13 21:12:14,469 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:12:14,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20495 states. [2019-10-13 21:12:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20495 to 20323. [2019-10-13 21:12:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20323 states. [2019-10-13 21:12:15,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20323 states to 20323 states and 32569 transitions. [2019-10-13 21:12:15,236 INFO L78 Accepts]: Start accepts. Automaton has 20323 states and 32569 transitions. Word has length 256 [2019-10-13 21:12:15,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:15,236 INFO L462 AbstractCegarLoop]: Abstraction has 20323 states and 32569 transitions. [2019-10-13 21:12:15,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:15,236 INFO L276 IsEmpty]: Start isEmpty. Operand 20323 states and 32569 transitions. [2019-10-13 21:12:15,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:12:15,243 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:15,243 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:15,452 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:15,452 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:15,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:15,452 INFO L82 PathProgramCache]: Analyzing trace with hash 607135158, now seen corresponding path program 1 times [2019-10-13 21:12:15,453 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:15,453 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325793853] [2019-10-13 21:12:15,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:15,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:12:15,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325793853] [2019-10-13 21:12:15,612 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:15,612 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:15,612 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833128268] [2019-10-13 21:12:15,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:15,613 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:15,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:15,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:15,614 INFO L87 Difference]: Start difference. First operand 20323 states and 32569 transitions. Second operand 7 states.