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_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:10:39,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:10:39,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:10:39,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:10:39,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:10:39,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:10:39,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:10:39,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:10:39,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:10:39,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:10:39,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:10:39,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:10:39,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:10:39,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:10:39,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:10:39,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:10:39,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:10:39,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:10:39,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:10:39,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:10:39,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:10:39,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:10:39,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:10:39,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:10:39,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:10:39,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:10:39,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:10:39,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:10:39,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:10:39,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:10:39,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:10:39,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:10:39,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:10:39,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:10:39,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:10:39,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:10:39,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:10:39,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:10:39,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:10:39,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:10:39,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:10:39,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:10:39,122 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:10:39,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:10:39,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:10:39,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:10:39,125 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:10:39,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:10:39,126 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:10:39,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:10:39,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:10:39,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:10:39,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:10:39,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:10:39,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:10:39,129 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:10:39,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:10:39,129 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:10:39,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:10:39,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:10:39,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:10:39,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:10:39,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:10:39,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:10:39,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:10:39,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:10:39,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:10:39,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:10:39,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:10:39,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:10:39,132 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 [2019-10-15 01:10:39,493 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:10:39,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:10:39,518 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:10:39,519 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:10:39,520 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:10:39,521 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c [2019-10-15 01:10:39,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d83e737/67f275e16ead4186bca595ae53361595/FLAGa579702b3 [2019-10-15 01:10:40,268 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:10:40,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c [2019-10-15 01:10:40,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d83e737/67f275e16ead4186bca595ae53361595/FLAGa579702b3 [2019-10-15 01:10:40,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d83e737/67f275e16ead4186bca595ae53361595 [2019-10-15 01:10:40,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:10:40,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:10:40,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:10:40,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:10:40,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:10:40,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:10:40" (1/1) ... [2019-10-15 01:10:40,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ffa0e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:40, skipping insertion in model container [2019-10-15 01:10:40,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:10:40" (1/1) ... [2019-10-15 01:10:40,493 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:10:40,580 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:10:41,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:10:41,372 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:10:41,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:10:41,593 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:10:41,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:41 WrapperNode [2019-10-15 01:10:41,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:10:41,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:10:41,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:10:41,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:10:41,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:41" (1/1) ... [2019-10-15 01:10:41,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:41" (1/1) ... [2019-10-15 01:10:41,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:41" (1/1) ... [2019-10-15 01:10:41,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:41" (1/1) ... [2019-10-15 01:10:41,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:41" (1/1) ... [2019-10-15 01:10:41,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:41" (1/1) ... [2019-10-15 01:10:41,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:41" (1/1) ... [2019-10-15 01:10:41,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:10:41,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:10:41,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:10:41,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:10:41,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:10:41,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:10:41,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:10:41,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:10:41,869 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:10:41,870 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:10:41,870 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:10:41,870 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:10:41,870 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:10:41,871 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:10:41,871 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:10:41,871 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:10:41,872 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:10:41,872 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:10:41,872 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:10:41,872 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:10:41,873 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:10:41,873 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:10:41,873 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:10:41,873 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:10:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:10:41,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:10:41,878 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:10:41,878 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:10:41,878 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:10:41,878 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:10:41,878 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:10:41,878 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:10:41,878 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:10:41,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:10:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:10:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:10:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:10:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:10:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:10:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:10:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:10:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:10:41,880 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:10:41,880 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:10:41,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:10:41,881 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:10:41,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:10:41,881 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:10:41,881 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:10:41,882 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:10:41,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:10:41,882 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:10:41,882 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:10:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:10:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:10:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:10:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:10:41,884 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 01:10:41,884 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:10:41,884 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 01:10:41,884 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:10:41,884 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:10:41,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:10:41,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:10:41,885 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:10:41,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:10:41,885 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:10:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:10:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:10:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:10:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:10:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:10:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:10:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:10:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:10:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:10:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:10:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:10:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:10:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:10:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:10:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:10:41,889 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:10:41,889 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:10:41,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:10:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:10:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:10:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:10:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:10:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:10:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:10:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:10:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:10:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:10:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:10:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:10:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:10:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:10:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:10:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:10:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:10:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:10:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:10:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:10:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:10:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:10:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:10:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:10:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:10:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:10:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:10:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:10:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:10:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:10:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:10:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:10:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:10:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:10:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:10:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:10:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:10:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:10:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:10:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:10:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:10:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:10:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:10:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:10:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:10:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:10:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:10:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:10:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:10:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:10:41,899 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:10:41,899 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:10:41,899 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:10:41,899 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:10:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:10:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:10:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:10:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:10:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:10:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:10:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:10:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:10:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:10:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:10:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:10:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:10:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:10:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:10:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 01:10:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:10:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:10:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 01:10:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:10:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:10:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:10:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:10:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:10:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:10:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:10:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:10:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:10:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:10:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:10:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:10:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:10:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:10:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:10:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:10:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:10:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:10:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:10:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:10:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:10:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:10:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:10:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:10:44,397 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:10:44,397 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:10:44,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:44 BoogieIcfgContainer [2019-10-15 01:10:44,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:10:44,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:10:44,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:10:44,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:10:44,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:10:40" (1/3) ... [2019-10-15 01:10:44,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302e2481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:44, skipping insertion in model container [2019-10-15 01:10:44,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:41" (2/3) ... [2019-10-15 01:10:44,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302e2481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:44, skipping insertion in model container [2019-10-15 01:10:44,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:44" (3/3) ... [2019-10-15 01:10:44,409 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2019-10-15 01:10:44,420 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:10:44,430 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:10:44,443 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:10:44,482 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:10:44,483 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:10:44,483 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:10:44,483 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:10:44,483 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:10:44,483 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:10:44,483 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:10:44,483 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:10:44,522 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2019-10-15 01:10:44,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 01:10:44,537 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:44,538 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:44,541 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:44,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:44,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1561812380, now seen corresponding path program 1 times [2019-10-15 01:10:44,558 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:44,558 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339280645] [2019-10-15 01:10:44,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:44,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:44,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:45,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339280645] [2019-10-15 01:10:45,211 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:45,211 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:45,212 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428381550] [2019-10-15 01:10:45,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:45,218 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:45,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:45,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:45,236 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 7 states. [2019-10-15 01:10:45,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:45,512 INFO L93 Difference]: Finished difference Result 1345 states and 2150 transitions. [2019-10-15 01:10:45,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:45,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-10-15 01:10:45,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:45,555 INFO L225 Difference]: With dead ends: 1345 [2019-10-15 01:10:45,555 INFO L226 Difference]: Without dead ends: 681 [2019-10-15 01:10:45,569 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 [2019-10-15 01:10:45,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2019-10-15 01:10:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 679. [2019-10-15 01:10:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-10-15 01:10:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1070 transitions. [2019-10-15 01:10:45,717 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1070 transitions. Word has length 93 [2019-10-15 01:10:45,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:45,718 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 1070 transitions. [2019-10-15 01:10:45,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:45,718 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1070 transitions. [2019-10-15 01:10:45,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:10:45,725 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:45,725 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:45,726 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:45,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:45,726 INFO L82 PathProgramCache]: Analyzing trace with hash 46311185, now seen corresponding path program 1 times [2019-10-15 01:10:45,727 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:45,727 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388790764] [2019-10-15 01:10:45,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:45,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:45,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:45,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388790764] [2019-10-15 01:10:45,941 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:45,941 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:45,941 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921882437] [2019-10-15 01:10:45,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:45,944 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:45,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:45,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:45,944 INFO L87 Difference]: Start difference. First operand 679 states and 1070 transitions. Second operand 4 states. [2019-10-15 01:10:46,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:46,066 INFO L93 Difference]: Finished difference Result 1324 states and 2105 transitions. [2019-10-15 01:10:46,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:46,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-15 01:10:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:46,127 INFO L225 Difference]: With dead ends: 1324 [2019-10-15 01:10:46,127 INFO L226 Difference]: Without dead ends: 661 [2019-10-15 01:10:46,132 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 [2019-10-15 01:10:46,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2019-10-15 01:10:46,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2019-10-15 01:10:46,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2019-10-15 01:10:46,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1037 transitions. [2019-10-15 01:10:46,201 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1037 transitions. Word has length 94 [2019-10-15 01:10:46,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:46,202 INFO L462 AbstractCegarLoop]: Abstraction has 661 states and 1037 transitions. [2019-10-15 01:10:46,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:46,202 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1037 transitions. [2019-10-15 01:10:46,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:10:46,207 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:46,207 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:46,207 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:46,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:46,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1318948269, now seen corresponding path program 1 times [2019-10-15 01:10:46,208 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:46,208 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820288537] [2019-10-15 01:10:46,208 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:46,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:46,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:46,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820288537] [2019-10-15 01:10:46,501 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:46,501 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:46,501 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771115776] [2019-10-15 01:10:46,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:46,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:46,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:46,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:46,506 INFO L87 Difference]: Start difference. First operand 661 states and 1037 transitions. Second operand 7 states. [2019-10-15 01:10:46,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:46,603 INFO L93 Difference]: Finished difference Result 1293 states and 2047 transitions. [2019-10-15 01:10:46,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:46,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2019-10-15 01:10:46,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:46,610 INFO L225 Difference]: With dead ends: 1293 [2019-10-15 01:10:46,610 INFO L226 Difference]: Without dead ends: 655 [2019-10-15 01:10:46,613 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 [2019-10-15 01:10:46,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2019-10-15 01:10:46,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2019-10-15 01:10:46,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2019-10-15 01:10:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1024 transitions. [2019-10-15 01:10:46,641 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1024 transitions. Word has length 94 [2019-10-15 01:10:46,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:46,641 INFO L462 AbstractCegarLoop]: Abstraction has 655 states and 1024 transitions. [2019-10-15 01:10:46,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:46,642 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1024 transitions. [2019-10-15 01:10:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:10:46,645 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:46,645 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:46,645 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:46,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:46,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1711940512, now seen corresponding path program 1 times [2019-10-15 01:10:46,646 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:46,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891585299] [2019-10-15 01:10:46,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:46,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:46,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:46,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:46,800 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891585299] [2019-10-15 01:10:46,801 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:46,801 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:46,801 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231534854] [2019-10-15 01:10:46,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:46,802 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:46,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:46,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:46,803 INFO L87 Difference]: Start difference. First operand 655 states and 1024 transitions. Second operand 7 states. [2019-10-15 01:10:46,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:46,895 INFO L93 Difference]: Finished difference Result 1281 states and 2021 transitions. [2019-10-15 01:10:46,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:46,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-15 01:10:46,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:46,901 INFO L225 Difference]: With dead ends: 1281 [2019-10-15 01:10:46,902 INFO L226 Difference]: Without dead ends: 649 [2019-10-15 01:10:46,905 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 [2019-10-15 01:10:46,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2019-10-15 01:10:46,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 649. [2019-10-15 01:10:46,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2019-10-15 01:10:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1011 transitions. [2019-10-15 01:10:46,932 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1011 transitions. Word has length 95 [2019-10-15 01:10:46,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:46,933 INFO L462 AbstractCegarLoop]: Abstraction has 649 states and 1011 transitions. [2019-10-15 01:10:46,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:46,933 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1011 transitions. [2019-10-15 01:10:46,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:10:46,935 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:46,936 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:46,936 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:46,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:46,936 INFO L82 PathProgramCache]: Analyzing trace with hash -974599401, now seen corresponding path program 1 times [2019-10-15 01:10:46,937 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:46,937 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227270783] [2019-10-15 01:10:46,937 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:46,937 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:46,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:47,189 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227270783] [2019-10-15 01:10:47,189 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:47,190 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:47,190 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939525353] [2019-10-15 01:10:47,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:47,191 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:47,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:47,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:47,192 INFO L87 Difference]: Start difference. First operand 649 states and 1011 transitions. Second operand 7 states. [2019-10-15 01:10:47,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:47,278 INFO L93 Difference]: Finished difference Result 1269 states and 1995 transitions. [2019-10-15 01:10:47,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:47,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-15 01:10:47,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:47,286 INFO L225 Difference]: With dead ends: 1269 [2019-10-15 01:10:47,286 INFO L226 Difference]: Without dead ends: 643 [2019-10-15 01:10:47,290 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 [2019-10-15 01:10:47,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-15 01:10:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-15 01:10:47,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-15 01:10:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 998 transitions. [2019-10-15 01:10:47,316 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 998 transitions. Word has length 96 [2019-10-15 01:10:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:47,316 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 998 transitions. [2019-10-15 01:10:47,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:47,316 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 998 transitions. [2019-10-15 01:10:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:10:47,318 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:47,318 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:47,319 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:47,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:47,319 INFO L82 PathProgramCache]: Analyzing trace with hash 414342424, now seen corresponding path program 1 times [2019-10-15 01:10:47,319 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:47,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393421454] [2019-10-15 01:10:47,320 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:47,320 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:47,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:47,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393421454] [2019-10-15 01:10:47,494 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:47,494 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:47,495 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172448838] [2019-10-15 01:10:47,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:47,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:47,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:47,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:47,496 INFO L87 Difference]: Start difference. First operand 643 states and 998 transitions. Second operand 7 states. [2019-10-15 01:10:47,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:47,589 INFO L93 Difference]: Finished difference Result 1257 states and 1969 transitions. [2019-10-15 01:10:47,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:47,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-15 01:10:47,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:47,598 INFO L225 Difference]: With dead ends: 1257 [2019-10-15 01:10:47,598 INFO L226 Difference]: Without dead ends: 643 [2019-10-15 01:10:47,603 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 [2019-10-15 01:10:47,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-15 01:10:47,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-15 01:10:47,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-15 01:10:47,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 997 transitions. [2019-10-15 01:10:47,629 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 997 transitions. Word has length 96 [2019-10-15 01:10:47,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:47,629 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 997 transitions. [2019-10-15 01:10:47,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:47,629 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 997 transitions. [2019-10-15 01:10:47,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 01:10:47,631 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:47,631 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:47,631 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:47,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:47,632 INFO L82 PathProgramCache]: Analyzing trace with hash -512802396, now seen corresponding path program 1 times [2019-10-15 01:10:47,632 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:47,632 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617606048] [2019-10-15 01:10:47,632 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:47,633 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:47,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:47,764 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617606048] [2019-10-15 01:10:47,765 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:47,765 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:47,765 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644903036] [2019-10-15 01:10:47,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:47,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:47,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:47,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:47,766 INFO L87 Difference]: Start difference. First operand 643 states and 997 transitions. Second operand 5 states. [2019-10-15 01:10:47,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:47,911 INFO L93 Difference]: Finished difference Result 1256 states and 1966 transitions. [2019-10-15 01:10:47,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:47,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-10-15 01:10:47,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:47,916 INFO L225 Difference]: With dead ends: 1256 [2019-10-15 01:10:47,917 INFO L226 Difference]: Without dead ends: 643 [2019-10-15 01:10:47,920 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 [2019-10-15 01:10:47,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-15 01:10:47,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-15 01:10:47,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-15 01:10:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 996 transitions. [2019-10-15 01:10:47,944 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 996 transitions. Word has length 97 [2019-10-15 01:10:47,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:47,945 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 996 transitions. [2019-10-15 01:10:47,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 996 transitions. [2019-10-15 01:10:47,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 01:10:47,947 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:47,947 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:47,947 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:47,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:47,948 INFO L82 PathProgramCache]: Analyzing trace with hash -288681029, now seen corresponding path program 1 times [2019-10-15 01:10:47,948 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:47,948 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686651801] [2019-10-15 01:10:47,948 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:47,948 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:47,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:48,069 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686651801] [2019-10-15 01:10:48,069 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:48,069 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:48,069 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929873665] [2019-10-15 01:10:48,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:48,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:48,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:48,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:48,071 INFO L87 Difference]: Start difference. First operand 643 states and 996 transitions. Second operand 5 states. [2019-10-15 01:10:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:48,139 INFO L93 Difference]: Finished difference Result 1256 states and 1964 transitions. [2019-10-15 01:10:48,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:48,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-10-15 01:10:48,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:48,146 INFO L225 Difference]: With dead ends: 1256 [2019-10-15 01:10:48,146 INFO L226 Difference]: Without dead ends: 643 [2019-10-15 01:10:48,150 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 [2019-10-15 01:10:48,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-15 01:10:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-15 01:10:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-15 01:10:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 995 transitions. [2019-10-15 01:10:48,173 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 995 transitions. Word has length 98 [2019-10-15 01:10:48,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:48,173 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 995 transitions. [2019-10-15 01:10:48,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:48,173 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 995 transitions. [2019-10-15 01:10:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 01:10:48,179 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:48,179 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:48,179 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:48,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:48,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1377915425, now seen corresponding path program 1 times [2019-10-15 01:10:48,180 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:48,180 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758523644] [2019-10-15 01:10:48,180 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:48,181 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:48,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:48,296 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758523644] [2019-10-15 01:10:48,297 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:48,297 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:48,297 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315557682] [2019-10-15 01:10:48,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:48,298 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:48,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:48,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:48,298 INFO L87 Difference]: Start difference. First operand 643 states and 995 transitions. Second operand 5 states. [2019-10-15 01:10:48,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:48,362 INFO L93 Difference]: Finished difference Result 1256 states and 1962 transitions. [2019-10-15 01:10:48,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:48,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-10-15 01:10:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:48,367 INFO L225 Difference]: With dead ends: 1256 [2019-10-15 01:10:48,368 INFO L226 Difference]: Without dead ends: 643 [2019-10-15 01:10:48,371 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 [2019-10-15 01:10:48,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-15 01:10:48,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-15 01:10:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-15 01:10:48,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 994 transitions. [2019-10-15 01:10:48,394 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 994 transitions. Word has length 99 [2019-10-15 01:10:48,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:48,395 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 994 transitions. [2019-10-15 01:10:48,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 994 transitions. [2019-10-15 01:10:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 01:10:48,397 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:48,397 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:48,397 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:48,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:48,398 INFO L82 PathProgramCache]: Analyzing trace with hash -231505514, now seen corresponding path program 1 times [2019-10-15 01:10:48,398 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:48,398 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542040481] [2019-10-15 01:10:48,398 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:48,398 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:48,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:48,511 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542040481] [2019-10-15 01:10:48,512 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:48,512 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:48,512 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24746919] [2019-10-15 01:10:48,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:48,513 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:48,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:48,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:48,513 INFO L87 Difference]: Start difference. First operand 643 states and 994 transitions. Second operand 5 states. [2019-10-15 01:10:48,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:48,582 INFO L93 Difference]: Finished difference Result 1256 states and 1960 transitions. [2019-10-15 01:10:48,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:48,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-15 01:10:48,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:48,587 INFO L225 Difference]: With dead ends: 1256 [2019-10-15 01:10:48,588 INFO L226 Difference]: Without dead ends: 643 [2019-10-15 01:10:48,595 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 [2019-10-15 01:10:48,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-15 01:10:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-15 01:10:48,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-15 01:10:48,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 993 transitions. [2019-10-15 01:10:48,623 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 993 transitions. Word has length 100 [2019-10-15 01:10:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:48,624 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 993 transitions. [2019-10-15 01:10:48,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 993 transitions. [2019-10-15 01:10:48,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 01:10:48,626 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:48,626 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:48,626 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:48,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:48,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1500401178, now seen corresponding path program 1 times [2019-10-15 01:10:48,627 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:48,627 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132236318] [2019-10-15 01:10:48,627 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:48,627 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:48,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:48,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132236318] [2019-10-15 01:10:48,896 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:48,896 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:10:48,896 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479409781] [2019-10-15 01:10:48,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:10:48,897 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:48,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:10:48,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:48,898 INFO L87 Difference]: Start difference. First operand 643 states and 993 transitions. Second operand 8 states. [2019-10-15 01:10:52,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:52,767 INFO L93 Difference]: Finished difference Result 2359 states and 3709 transitions. [2019-10-15 01:10:52,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 01:10:52,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2019-10-15 01:10:52,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:52,784 INFO L225 Difference]: With dead ends: 2359 [2019-10-15 01:10:52,785 INFO L226 Difference]: Without dead ends: 1750 [2019-10-15 01:10:52,790 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:10:52,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2019-10-15 01:10:52,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1738. [2019-10-15 01:10:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2019-10-15 01:10:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2690 transitions. [2019-10-15 01:10:52,902 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2690 transitions. Word has length 101 [2019-10-15 01:10:52,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:52,903 INFO L462 AbstractCegarLoop]: Abstraction has 1738 states and 2690 transitions. [2019-10-15 01:10:52,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:10:52,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2690 transitions. [2019-10-15 01:10:52,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 01:10:52,906 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:52,906 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:52,907 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:52,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:52,907 INFO L82 PathProgramCache]: Analyzing trace with hash -2018217190, now seen corresponding path program 1 times [2019-10-15 01:10:52,908 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:52,908 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043145275] [2019-10-15 01:10:52,908 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:52,908 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:52,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:10:53,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043145275] [2019-10-15 01:10:53,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352847277] [2019-10-15 01:10:53,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:53,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:10:53,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:53,735 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:53,844 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:53,844 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:10:53,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774038163] [2019-10-15 01:10:53,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:10:53,846 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:53,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:10:53,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:53,846 INFO L87 Difference]: Start difference. First operand 1738 states and 2690 transitions. Second operand 3 states. [2019-10-15 01:10:53,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:53,982 INFO L93 Difference]: Finished difference Result 5027 states and 7906 transitions. [2019-10-15 01:10:53,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:10:53,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2019-10-15 01:10:53,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:54,013 INFO L225 Difference]: With dead ends: 5027 [2019-10-15 01:10:54,013 INFO L226 Difference]: Without dead ends: 3323 [2019-10-15 01:10:54,024 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:54,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2019-10-15 01:10:54,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3217. [2019-10-15 01:10:54,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3217 states. [2019-10-15 01:10:54,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 5030 transitions. [2019-10-15 01:10:54,234 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 5030 transitions. Word has length 101 [2019-10-15 01:10:54,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:54,235 INFO L462 AbstractCegarLoop]: Abstraction has 3217 states and 5030 transitions. [2019-10-15 01:10:54,235 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:10:54,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 5030 transitions. [2019-10-15 01:10:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-15 01:10:54,236 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:54,236 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:54,445 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:54,446 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:54,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:54,447 INFO L82 PathProgramCache]: Analyzing trace with hash 988365789, now seen corresponding path program 1 times [2019-10-15 01:10:54,447 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:54,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695439058] [2019-10-15 01:10:54,448 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:54,448 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:54,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:54,641 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695439058] [2019-10-15 01:10:54,641 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:54,641 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:54,641 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657216213] [2019-10-15 01:10:54,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:54,642 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:54,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:54,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:54,643 INFO L87 Difference]: Start difference. First operand 3217 states and 5030 transitions. Second operand 7 states. [2019-10-15 01:10:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:57,698 INFO L93 Difference]: Finished difference Result 9531 states and 15297 transitions. [2019-10-15 01:10:57,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:10:57,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2019-10-15 01:10:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:57,748 INFO L225 Difference]: With dead ends: 9531 [2019-10-15 01:10:57,749 INFO L226 Difference]: Without dead ends: 6348 [2019-10-15 01:10:57,771 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 [2019-10-15 01:10:57,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2019-10-15 01:10:58,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 6264. [2019-10-15 01:10:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6264 states. [2019-10-15 01:10:58,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6264 states to 6264 states and 9901 transitions. [2019-10-15 01:10:58,055 INFO L78 Accepts]: Start accepts. Automaton has 6264 states and 9901 transitions. Word has length 105 [2019-10-15 01:10:58,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:58,056 INFO L462 AbstractCegarLoop]: Abstraction has 6264 states and 9901 transitions. [2019-10-15 01:10:58,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:58,056 INFO L276 IsEmpty]: Start isEmpty. Operand 6264 states and 9901 transitions. [2019-10-15 01:10:58,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-15 01:10:58,059 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:58,059 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:58,059 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:58,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:58,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1406996872, now seen corresponding path program 1 times [2019-10-15 01:10:58,060 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:58,061 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392743519] [2019-10-15 01:10:58,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:58,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:58,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:10:58,310 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392743519] [2019-10-15 01:10:58,310 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468537351] [2019-10-15 01:10:58,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:59,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:10:59,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:59,124 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:59,246 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:59,246 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:10:59,246 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578638032] [2019-10-15 01:10:59,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:10:59,250 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:59,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:10:59,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:59,251 INFO L87 Difference]: Start difference. First operand 6264 states and 9901 transitions. Second operand 3 states. [2019-10-15 01:10:59,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:59,493 INFO L93 Difference]: Finished difference Result 13777 states and 21957 transitions. [2019-10-15 01:10:59,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:10:59,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-10-15 01:10:59,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:59,579 INFO L225 Difference]: With dead ends: 13777 [2019-10-15 01:10:59,579 INFO L226 Difference]: Without dead ends: 7547 [2019-10-15 01:10:59,615 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:59,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7547 states. [2019-10-15 01:10:59,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7547 to 7358. [2019-10-15 01:10:59,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7358 states. [2019-10-15 01:10:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7358 states to 7358 states and 11623 transitions. [2019-10-15 01:10:59,957 INFO L78 Accepts]: Start accepts. Automaton has 7358 states and 11623 transitions. Word has length 102 [2019-10-15 01:10:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:59,957 INFO L462 AbstractCegarLoop]: Abstraction has 7358 states and 11623 transitions. [2019-10-15 01:10:59,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:10:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 7358 states and 11623 transitions. [2019-10-15 01:10:59,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-15 01:10:59,960 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:59,960 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:00,169 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:11:00,169 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:00,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:00,169 INFO L82 PathProgramCache]: Analyzing trace with hash -921011962, now seen corresponding path program 1 times [2019-10-15 01:11:00,170 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:00,170 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815929227] [2019-10-15 01:11:00,170 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:00,170 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:00,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:00,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815929227] [2019-10-15 01:11:00,276 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:00,276 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:00,276 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496755895] [2019-10-15 01:11:00,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:00,277 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:00,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:00,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:00,277 INFO L87 Difference]: Start difference. First operand 7358 states and 11623 transitions. Second operand 4 states. [2019-10-15 01:11:00,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:00,761 INFO L93 Difference]: Finished difference Result 14674 states and 23394 transitions. [2019-10-15 01:11:00,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:00,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-10-15 01:11:00,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:00,828 INFO L225 Difference]: With dead ends: 14674 [2019-10-15 01:11:00,829 INFO L226 Difference]: Without dead ends: 7350 [2019-10-15 01:11:00,860 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 [2019-10-15 01:11:00,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2019-10-15 01:11:01,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 7328. [2019-10-15 01:11:01,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7328 states. [2019-10-15 01:11:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7328 states to 7328 states and 11535 transitions. [2019-10-15 01:11:01,166 INFO L78 Accepts]: Start accepts. Automaton has 7328 states and 11535 transitions. Word has length 105 [2019-10-15 01:11:01,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:01,169 INFO L462 AbstractCegarLoop]: Abstraction has 7328 states and 11535 transitions. [2019-10-15 01:11:01,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:01,169 INFO L276 IsEmpty]: Start isEmpty. Operand 7328 states and 11535 transitions. [2019-10-15 01:11:01,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 01:11:01,172 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:01,173 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:01,173 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:01,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:01,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1506393718, now seen corresponding path program 1 times [2019-10-15 01:11:01,173 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:01,174 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063501079] [2019-10-15 01:11:01,174 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:01,174 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:01,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:01,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:11:01,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063501079] [2019-10-15 01:11:01,339 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:01,339 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:01,339 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626119692] [2019-10-15 01:11:01,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:01,340 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:01,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:01,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:01,341 INFO L87 Difference]: Start difference. First operand 7328 states and 11535 transitions. Second operand 7 states. [2019-10-15 01:11:04,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:04,611 INFO L93 Difference]: Finished difference Result 21917 states and 35480 transitions. [2019-10-15 01:11:04,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:11:04,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-15 01:11:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:04,724 INFO L225 Difference]: With dead ends: 21917 [2019-10-15 01:11:04,724 INFO L226 Difference]: Without dead ends: 14623 [2019-10-15 01:11:04,761 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 [2019-10-15 01:11:04,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14623 states. [2019-10-15 01:11:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14623 to 14495. [2019-10-15 01:11:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14495 states. [2019-10-15 01:11:06,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14495 states to 14495 states and 23191 transitions. [2019-10-15 01:11:06,223 INFO L78 Accepts]: Start accepts. Automaton has 14495 states and 23191 transitions. Word has length 113 [2019-10-15 01:11:06,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:06,227 INFO L462 AbstractCegarLoop]: Abstraction has 14495 states and 23191 transitions. [2019-10-15 01:11:06,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:06,227 INFO L276 IsEmpty]: Start isEmpty. Operand 14495 states and 23191 transitions. [2019-10-15 01:11:06,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-15 01:11:06,229 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:06,230 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:06,230 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:06,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:06,230 INFO L82 PathProgramCache]: Analyzing trace with hash -105867251, now seen corresponding path program 1 times [2019-10-15 01:11:06,230 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:06,231 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662010596] [2019-10-15 01:11:06,231 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:06,231 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:06,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:11:06,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662010596] [2019-10-15 01:11:06,361 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:06,361 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:06,361 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166918383] [2019-10-15 01:11:06,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:06,363 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:06,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:06,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:06,364 INFO L87 Difference]: Start difference. First operand 14495 states and 23191 transitions. Second operand 4 states. [2019-10-15 01:11:06,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:06,836 INFO L93 Difference]: Finished difference Result 29018 states and 46913 transitions. [2019-10-15 01:11:06,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:11:06,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-10-15 01:11:06,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:06,951 INFO L225 Difference]: With dead ends: 29018 [2019-10-15 01:11:06,952 INFO L226 Difference]: Without dead ends: 14551 [2019-10-15 01:11:07,016 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 [2019-10-15 01:11:07,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14551 states. [2019-10-15 01:11:07,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14551 to 14503. [2019-10-15 01:11:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14503 states. [2019-10-15 01:11:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14503 states to 14503 states and 23142 transitions. [2019-10-15 01:11:07,767 INFO L78 Accepts]: Start accepts. Automaton has 14503 states and 23142 transitions. Word has length 114 [2019-10-15 01:11:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:07,768 INFO L462 AbstractCegarLoop]: Abstraction has 14503 states and 23142 transitions. [2019-10-15 01:11:07,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:07,768 INFO L276 IsEmpty]: Start isEmpty. Operand 14503 states and 23142 transitions. [2019-10-15 01:11:07,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-15 01:11:07,770 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:07,770 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:07,771 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:07,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:07,771 INFO L82 PathProgramCache]: Analyzing trace with hash 11760676, now seen corresponding path program 1 times [2019-10-15 01:11:07,771 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:07,772 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221413371] [2019-10-15 01:11:07,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:07,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:07,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:11:07,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221413371] [2019-10-15 01:11:07,979 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:07,979 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:07,979 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470561317] [2019-10-15 01:11:07,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:07,980 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:07,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:07,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:07,980 INFO L87 Difference]: Start difference. First operand 14503 states and 23142 transitions. Second operand 7 states.