/usr/bin/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_spec9_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:44:48,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:44:48,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:44:48,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:44:48,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:44:48,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:44:48,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:44:48,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:44:48,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:44:48,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:44:48,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:44:48,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:44:48,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:44:48,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:44:48,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:44:48,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:44:48,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:44:48,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:44:48,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:44:48,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:44:48,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:44:48,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:44:48,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:44:48,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:44:48,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:44:48,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:44:48,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:44:48,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:44:48,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:44:48,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:44:48,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:44:48,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:44:48,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:44:48,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:44:48,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:44:48,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:44:48,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:44:48,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:44:48,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:44:48,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:44:48,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:44:48,953 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 [2019-11-07 00:44:48,974 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:44:48,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:44:48,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:44:48,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:44:48,977 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:44:48,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:44:48,977 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:44:48,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:44:48,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:44:48,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:44:48,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:44:48,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:44:48,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:44:48,978 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:44:48,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:44:48,981 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:44:48,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:44:48,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:44:48,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:44:48,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:44:48,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:44:48,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:44:48,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:44:48,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:44:48,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:44:48,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:44:48,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:44:48,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:44:48,984 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 [2019-11-07 00:44:49,276 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:44:49,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:44:49,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:44:49,295 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:44:49,295 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:44:49,296 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product25.cil.c [2019-11-07 00:44:49,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69e1efce2/98847922e3064c77a783a82bd2ad881c/FLAG1b1cf1ecc [2019-11-07 00:44:49,951 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:44:49,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product25.cil.c [2019-11-07 00:44:49,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69e1efce2/98847922e3064c77a783a82bd2ad881c/FLAG1b1cf1ecc [2019-11-07 00:44:50,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69e1efce2/98847922e3064c77a783a82bd2ad881c [2019-11-07 00:44:50,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:44:50,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:44:50,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:44:50,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:44:50,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:44:50,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:50" (1/1) ... [2019-11-07 00:44:50,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c25fe17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:50, skipping insertion in model container [2019-11-07 00:44:50,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:50" (1/1) ... [2019-11-07 00:44:50,192 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:44:50,278 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:44:50,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:44:51,000 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:44:51,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:44:51,208 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:44:51,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:51 WrapperNode [2019-11-07 00:44:51,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:44:51,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:44:51,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:44:51,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:44:51,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:51" (1/1) ... [2019-11-07 00:44:51,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:51" (1/1) ... [2019-11-07 00:44:51,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:51" (1/1) ... [2019-11-07 00:44:51,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:51" (1/1) ... [2019-11-07 00:44:51,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:51" (1/1) ... [2019-11-07 00:44:51,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:51" (1/1) ... [2019-11-07 00:44:51,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:51" (1/1) ... [2019-11-07 00:44:51,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:44:51,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:44:51,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:44:51,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:44:51,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:51" (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 [2019-11-07 00:44:51,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:44:51,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:44:51,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:44:51,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-11-07 00:44:51,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-11-07 00:44:51,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-11-07 00:44:51,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-11-07 00:44:51,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:44:51,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:44:51,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:44:51,484 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:44:51,484 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:44:51,484 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:44:51,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:44:51,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:44:51,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:44:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:44:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:44:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:44:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:44:51,490 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:44:51,490 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:44:51,490 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:44:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:44:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:44:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:44:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:44:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:44:51,492 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:44:51,492 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:44:51,492 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:44:51,492 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:44:51,492 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:44:51,493 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:44:51,493 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:44:51,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:44:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:44:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:44:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:44:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:44:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:44:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:44:51,495 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:44:51,495 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:44:51,495 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:44:51,495 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:44:51,495 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:44:51,495 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:44:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:44:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:44:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:44:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:44:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 00:44:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:44:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 00:44:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 00:44:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:44:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:44:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:44:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:44:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:44:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:44:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:44:51,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:44:51,499 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:44:51,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:44:51,499 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:44:51,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:44:51,500 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:44:51,500 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:44:51,500 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:44:51,500 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:44:51,501 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:44:51,501 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:44:51,502 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:44:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:44:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:44:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:44:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:44:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:44:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:44:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-11-07 00:44:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-11-07 00:44:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-11-07 00:44:51,505 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-11-07 00:44:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:44:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:44:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:44:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:44:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:44:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:44:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:44:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:44:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:44:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:44:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:44:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:44:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:44:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:44:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:44:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:44:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:44:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:44:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:44:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:44:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:44:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:44:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:44:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:44:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:44:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:44:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:44:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:44:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:44:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:44:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:44:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:44:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:44:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:44:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:44:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:44:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:44:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:44:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:44:51,516 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:44:51,516 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:44:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:44:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:44:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:44:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:44:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:44:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:44:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:44:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:44:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:44:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:44:51,520 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:44:51,524 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:44:51,524 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:44:51,524 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:44:51,525 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:44:51,525 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:44:51,526 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:44:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:44:51,534 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:44:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:44:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:44:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:44:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 00:44:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 00:44:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 00:44:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:44:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:44:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:44:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:44:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:44:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:44:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:44:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:44:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:44:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:44:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:44:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:44:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:44:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:44:54,083 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:44:54,083 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:44:54,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:54 BoogieIcfgContainer [2019-11-07 00:44:54,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:44:54,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:44:54,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:44:54,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:44:54,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:44:50" (1/3) ... [2019-11-07 00:44:54,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a2f812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:54, skipping insertion in model container [2019-11-07 00:44:54,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:51" (2/3) ... [2019-11-07 00:44:54,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a2f812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:54, skipping insertion in model container [2019-11-07 00:44:54,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:54" (3/3) ... [2019-11-07 00:44:54,094 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product25.cil.c [2019-11-07 00:44:54,105 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:44:54,116 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:44:54,128 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:44:54,160 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:44:54,160 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:44:54,160 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:44:54,161 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:44:54,161 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:44:54,161 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:44:54,161 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:44:54,161 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:44:54,203 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states. [2019-11-07 00:44:54,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-07 00:44:54,235 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:54,236 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:54,238 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:54,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:54,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1728086077, now seen corresponding path program 1 times [2019-11-07 00:44:54,255 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:54,255 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225988190] [2019-11-07 00:44:54,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:54,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:54,908 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225988190] [2019-11-07 00:44:54,909 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:54,910 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:54,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393003780] [2019-11-07 00:44:54,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:54,919 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:54,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:54,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:54,936 INFO L87 Difference]: Start difference. First operand 749 states. Second operand 4 states. [2019-11-07 00:44:55,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:55,184 INFO L93 Difference]: Finished difference Result 1161 states and 1887 transitions. [2019-11-07 00:44:55,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:55,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2019-11-07 00:44:55,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:55,220 INFO L225 Difference]: With dead ends: 1161 [2019-11-07 00:44:55,220 INFO L226 Difference]: Without dead ends: 589 [2019-11-07 00:44:55,233 INFO L630 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 [2019-11-07 00:44:55,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-11-07 00:44:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2019-11-07 00:44:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-11-07 00:44:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 945 transitions. [2019-11-07 00:44:55,380 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 945 transitions. Word has length 109 [2019-11-07 00:44:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:55,381 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 945 transitions. [2019-11-07 00:44:55,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 945 transitions. [2019-11-07 00:44:55,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-07 00:44:55,392 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:55,392 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:55,393 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:55,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:55,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1757589142, now seen corresponding path program 1 times [2019-11-07 00:44:55,393 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:55,394 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613180033] [2019-11-07 00:44:55,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:55,674 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613180033] [2019-11-07 00:44:55,674 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:55,674 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:55,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802142911] [2019-11-07 00:44:55,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:55,686 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:55,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:55,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:55,687 INFO L87 Difference]: Start difference. First operand 589 states and 945 transitions. Second operand 4 states. [2019-11-07 00:44:55,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:55,797 INFO L93 Difference]: Finished difference Result 1141 states and 1848 transitions. [2019-11-07 00:44:55,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:55,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2019-11-07 00:44:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:55,804 INFO L225 Difference]: With dead ends: 1141 [2019-11-07 00:44:55,804 INFO L226 Difference]: Without dead ends: 589 [2019-11-07 00:44:55,808 INFO L630 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 [2019-11-07 00:44:55,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-11-07 00:44:55,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2019-11-07 00:44:55,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-11-07 00:44:55,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 944 transitions. [2019-11-07 00:44:55,844 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 944 transitions. Word has length 112 [2019-11-07 00:44:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:55,846 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 944 transitions. [2019-11-07 00:44:55,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 944 transitions. [2019-11-07 00:44:55,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-07 00:44:55,905 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:55,906 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:55,906 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:55,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:55,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1080658030, now seen corresponding path program 1 times [2019-11-07 00:44:55,906 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:55,907 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601836034] [2019-11-07 00:44:55,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:56,079 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601836034] [2019-11-07 00:44:56,079 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:56,079 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:56,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486828954] [2019-11-07 00:44:56,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:56,080 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:56,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:56,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:56,081 INFO L87 Difference]: Start difference. First operand 589 states and 944 transitions. Second operand 4 states. [2019-11-07 00:44:56,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:56,141 INFO L93 Difference]: Finished difference Result 1141 states and 1847 transitions. [2019-11-07 00:44:56,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:56,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-11-07 00:44:56,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:56,147 INFO L225 Difference]: With dead ends: 1141 [2019-11-07 00:44:56,147 INFO L226 Difference]: Without dead ends: 589 [2019-11-07 00:44:56,150 INFO L630 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 [2019-11-07 00:44:56,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-11-07 00:44:56,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2019-11-07 00:44:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-11-07 00:44:56,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 943 transitions. [2019-11-07 00:44:56,172 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 943 transitions. Word has length 113 [2019-11-07 00:44:56,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:56,173 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 943 transitions. [2019-11-07 00:44:56,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:56,173 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 943 transitions. [2019-11-07 00:44:56,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-11-07 00:44:56,177 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:56,177 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:56,177 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:56,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:56,178 INFO L82 PathProgramCache]: Analyzing trace with hash -714374894, now seen corresponding path program 1 times [2019-11-07 00:44:56,178 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:56,178 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457414309] [2019-11-07 00:44:56,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:56,298 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457414309] [2019-11-07 00:44:56,298 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:56,298 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:56,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720909668] [2019-11-07 00:44:56,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:56,299 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:56,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:56,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:56,300 INFO L87 Difference]: Start difference. First operand 589 states and 943 transitions. Second operand 4 states. [2019-11-07 00:44:56,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:56,382 INFO L93 Difference]: Finished difference Result 1141 states and 1846 transitions. [2019-11-07 00:44:56,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:56,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-11-07 00:44:56,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:56,392 INFO L225 Difference]: With dead ends: 1141 [2019-11-07 00:44:56,392 INFO L226 Difference]: Without dead ends: 589 [2019-11-07 00:44:56,397 INFO L630 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 [2019-11-07 00:44:56,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-11-07 00:44:56,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2019-11-07 00:44:56,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-11-07 00:44:56,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 942 transitions. [2019-11-07 00:44:56,432 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 942 transitions. Word has length 114 [2019-11-07 00:44:56,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:56,434 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 942 transitions. [2019-11-07 00:44:56,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:56,434 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 942 transitions. [2019-11-07 00:44:56,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-07 00:44:56,438 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:56,438 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:56,438 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:56,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:56,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1484141674, now seen corresponding path program 1 times [2019-11-07 00:44:56,439 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:56,439 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661444060] [2019-11-07 00:44:56,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:56,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:56,638 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661444060] [2019-11-07 00:44:56,639 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:56,639 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:56,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39743610] [2019-11-07 00:44:56,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:56,641 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:56,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:56,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:56,642 INFO L87 Difference]: Start difference. First operand 589 states and 942 transitions. Second operand 4 states. [2019-11-07 00:44:56,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:56,696 INFO L93 Difference]: Finished difference Result 1141 states and 1845 transitions. [2019-11-07 00:44:56,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:56,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2019-11-07 00:44:56,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:56,702 INFO L225 Difference]: With dead ends: 1141 [2019-11-07 00:44:56,702 INFO L226 Difference]: Without dead ends: 589 [2019-11-07 00:44:56,705 INFO L630 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 [2019-11-07 00:44:56,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-11-07 00:44:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2019-11-07 00:44:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-11-07 00:44:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 941 transitions. [2019-11-07 00:44:56,726 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 941 transitions. Word has length 115 [2019-11-07 00:44:56,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:56,727 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 941 transitions. [2019-11-07 00:44:56,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:56,727 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 941 transitions. [2019-11-07 00:44:56,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-07 00:44:56,730 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:56,730 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:56,731 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:56,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:56,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1366326386, now seen corresponding path program 1 times [2019-11-07 00:44:56,731 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:56,732 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402478291] [2019-11-07 00:44:56,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:56,916 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402478291] [2019-11-07 00:44:56,916 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:56,917 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:44:56,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618907381] [2019-11-07 00:44:56,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:44:56,918 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:56,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:44:56,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:44:56,918 INFO L87 Difference]: Start difference. First operand 589 states and 941 transitions. Second operand 10 states. [2019-11-07 00:44:57,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:57,086 INFO L93 Difference]: Finished difference Result 1099 states and 1765 transitions. [2019-11-07 00:44:57,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:44:57,086 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 116 [2019-11-07 00:44:57,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:57,091 INFO L225 Difference]: With dead ends: 1099 [2019-11-07 00:44:57,091 INFO L226 Difference]: Without dead ends: 598 [2019-11-07 00:44:57,094 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:44:57,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-11-07 00:44:57,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 596. [2019-11-07 00:44:57,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2019-11-07 00:44:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 950 transitions. [2019-11-07 00:44:57,120 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 950 transitions. Word has length 116 [2019-11-07 00:44:57,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:57,120 INFO L462 AbstractCegarLoop]: Abstraction has 596 states and 950 transitions. [2019-11-07 00:44:57,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:44:57,121 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 950 transitions. [2019-11-07 00:44:57,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-07 00:44:57,125 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:57,125 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:57,125 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:57,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:57,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1937577619, now seen corresponding path program 1 times [2019-11-07 00:44:57,126 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:57,126 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372277737] [2019-11-07 00:44:57,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:57,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:57,237 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372277737] [2019-11-07 00:44:57,237 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:57,237 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:57,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5908508] [2019-11-07 00:44:57,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:57,238 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:57,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:57,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:57,239 INFO L87 Difference]: Start difference. First operand 596 states and 950 transitions. Second operand 4 states. [2019-11-07 00:44:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:57,347 INFO L93 Difference]: Finished difference Result 1147 states and 1851 transitions. [2019-11-07 00:44:57,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:57,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-11-07 00:44:57,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:57,356 INFO L225 Difference]: With dead ends: 1147 [2019-11-07 00:44:57,356 INFO L226 Difference]: Without dead ends: 583 [2019-11-07 00:44:57,361 INFO L630 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 [2019-11-07 00:44:57,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2019-11-07 00:44:57,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2019-11-07 00:44:57,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2019-11-07 00:44:57,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 927 transitions. [2019-11-07 00:44:57,389 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 927 transitions. Word has length 116 [2019-11-07 00:44:57,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:57,391 INFO L462 AbstractCegarLoop]: Abstraction has 583 states and 927 transitions. [2019-11-07 00:44:57,391 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:57,391 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 927 transitions. [2019-11-07 00:44:57,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-07 00:44:57,397 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:57,397 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:57,397 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:57,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:57,398 INFO L82 PathProgramCache]: Analyzing trace with hash 13298972, now seen corresponding path program 1 times [2019-11-07 00:44:57,398 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:57,398 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502775427] [2019-11-07 00:44:57,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:57,557 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502775427] [2019-11-07 00:44:57,557 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:57,557 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:44:57,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318699911] [2019-11-07 00:44:57,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:44:57,558 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:57,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:44:57,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:44:57,559 INFO L87 Difference]: Start difference. First operand 583 states and 927 transitions. Second operand 6 states. [2019-11-07 00:44:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:57,774 INFO L93 Difference]: Finished difference Result 1087 states and 1743 transitions. [2019-11-07 00:44:57,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:44:57,774 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2019-11-07 00:44:57,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:57,780 INFO L225 Difference]: With dead ends: 1087 [2019-11-07 00:44:57,780 INFO L226 Difference]: Without dead ends: 583 [2019-11-07 00:44:57,784 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:44:57,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2019-11-07 00:44:57,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2019-11-07 00:44:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2019-11-07 00:44:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 923 transitions. [2019-11-07 00:44:57,804 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 923 transitions. Word has length 117 [2019-11-07 00:44:57,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:57,806 INFO L462 AbstractCegarLoop]: Abstraction has 583 states and 923 transitions. [2019-11-07 00:44:57,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:44:57,806 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 923 transitions. [2019-11-07 00:44:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 00:44:57,809 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:57,810 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:57,810 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:57,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:57,810 INFO L82 PathProgramCache]: Analyzing trace with hash -65631567, now seen corresponding path program 1 times [2019-11-07 00:44:57,810 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:57,811 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538385718] [2019-11-07 00:44:57,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:57,937 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538385718] [2019-11-07 00:44:57,937 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:57,938 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:44:57,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316740662] [2019-11-07 00:44:57,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:44:57,939 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:57,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:44:57,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:44:57,940 INFO L87 Difference]: Start difference. First operand 583 states and 923 transitions. Second operand 6 states. [2019-11-07 00:44:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:58,131 INFO L93 Difference]: Finished difference Result 1087 states and 1739 transitions. [2019-11-07 00:44:58,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:44:58,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2019-11-07 00:44:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:58,137 INFO L225 Difference]: With dead ends: 1087 [2019-11-07 00:44:58,137 INFO L226 Difference]: Without dead ends: 583 [2019-11-07 00:44:58,140 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:44:58,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2019-11-07 00:44:58,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2019-11-07 00:44:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2019-11-07 00:44:58,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 919 transitions. [2019-11-07 00:44:58,168 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 919 transitions. Word has length 118 [2019-11-07 00:44:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:58,169 INFO L462 AbstractCegarLoop]: Abstraction has 583 states and 919 transitions. [2019-11-07 00:44:58,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:44:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 919 transitions. [2019-11-07 00:44:58,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 00:44:58,173 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:58,173 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:58,174 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:58,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:58,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1299849921, now seen corresponding path program 1 times [2019-11-07 00:44:58,174 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:58,175 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710582334] [2019-11-07 00:44:58,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:58,342 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710582334] [2019-11-07 00:44:58,343 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:58,343 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:44:58,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947825748] [2019-11-07 00:44:58,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:44:58,344 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:58,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:44:58,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:44:58,344 INFO L87 Difference]: Start difference. First operand 583 states and 919 transitions. Second operand 6 states. [2019-11-07 00:44:58,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:58,556 INFO L93 Difference]: Finished difference Result 1087 states and 1735 transitions. [2019-11-07 00:44:58,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:44:58,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2019-11-07 00:44:58,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:58,562 INFO L225 Difference]: With dead ends: 1087 [2019-11-07 00:44:58,562 INFO L226 Difference]: Without dead ends: 583 [2019-11-07 00:44:58,568 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:44:58,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2019-11-07 00:44:58,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2019-11-07 00:44:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2019-11-07 00:44:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 915 transitions. [2019-11-07 00:44:58,586 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 915 transitions. Word has length 119 [2019-11-07 00:44:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:58,587 INFO L462 AbstractCegarLoop]: Abstraction has 583 states and 915 transitions. [2019-11-07 00:44:58,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:44:58,587 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 915 transitions. [2019-11-07 00:44:58,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 00:44:58,590 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:58,590 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:58,591 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:58,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:58,591 INFO L82 PathProgramCache]: Analyzing trace with hash 333553473, now seen corresponding path program 1 times [2019-11-07 00:44:58,591 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:58,591 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014723437] [2019-11-07 00:44:58,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:58,738 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014723437] [2019-11-07 00:44:58,739 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:58,739 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:58,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625944312] [2019-11-07 00:44:58,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:58,740 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:58,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:58,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:58,741 INFO L87 Difference]: Start difference. First operand 583 states and 915 transitions. Second operand 7 states. [2019-11-07 00:44:58,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:58,865 INFO L93 Difference]: Finished difference Result 1087 states and 1731 transitions. [2019-11-07 00:44:58,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:44:58,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-11-07 00:44:58,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:58,873 INFO L225 Difference]: With dead ends: 1087 [2019-11-07 00:44:58,873 INFO L226 Difference]: Without dead ends: 562 [2019-11-07 00:44:58,877 INFO L630 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 [2019-11-07 00:44:58,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2019-11-07 00:44:58,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2019-11-07 00:44:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2019-11-07 00:44:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 881 transitions. [2019-11-07 00:44:58,900 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 881 transitions. Word has length 119 [2019-11-07 00:44:58,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:58,901 INFO L462 AbstractCegarLoop]: Abstraction has 562 states and 881 transitions. [2019-11-07 00:44:58,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:58,901 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 881 transitions. [2019-11-07 00:44:58,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 00:44:58,904 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:58,904 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:58,905 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:58,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:58,905 INFO L82 PathProgramCache]: Analyzing trace with hash 197463990, now seen corresponding path program 1 times [2019-11-07 00:44:58,905 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:58,905 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362032088] [2019-11-07 00:44:58,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:59,102 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362032088] [2019-11-07 00:44:59,103 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:59,103 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:44:59,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646836305] [2019-11-07 00:44:59,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:44:59,104 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:59,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:44:59,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:44:59,105 INFO L87 Difference]: Start difference. First operand 562 states and 881 transitions. Second operand 6 states. [2019-11-07 00:44:59,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:59,198 INFO L93 Difference]: Finished difference Result 1066 states and 1697 transitions. [2019-11-07 00:44:59,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:44:59,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-11-07 00:44:59,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:59,203 INFO L225 Difference]: With dead ends: 1066 [2019-11-07 00:44:59,203 INFO L226 Difference]: Without dead ends: 562 [2019-11-07 00:44:59,206 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:44:59,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2019-11-07 00:44:59,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2019-11-07 00:44:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2019-11-07 00:44:59,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 880 transitions. [2019-11-07 00:44:59,230 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 880 transitions. Word has length 120 [2019-11-07 00:44:59,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:59,231 INFO L462 AbstractCegarLoop]: Abstraction has 562 states and 880 transitions. [2019-11-07 00:44:59,231 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:44:59,232 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 880 transitions. [2019-11-07 00:44:59,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 00:44:59,236 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:59,236 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:59,237 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:59,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:59,237 INFO L82 PathProgramCache]: Analyzing trace with hash -99400602, now seen corresponding path program 1 times [2019-11-07 00:44:59,237 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:59,237 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002220465] [2019-11-07 00:44:59,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:59,376 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002220465] [2019-11-07 00:44:59,376 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:59,377 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:44:59,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275243162] [2019-11-07 00:44:59,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:44:59,379 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:59,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:44:59,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:44:59,380 INFO L87 Difference]: Start difference. First operand 562 states and 880 transitions. Second operand 6 states. [2019-11-07 00:44:59,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:59,477 INFO L93 Difference]: Finished difference Result 1066 states and 1696 transitions. [2019-11-07 00:44:59,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:44:59,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2019-11-07 00:44:59,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:59,482 INFO L225 Difference]: With dead ends: 1066 [2019-11-07 00:44:59,482 INFO L226 Difference]: Without dead ends: 562 [2019-11-07 00:44:59,485 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:44:59,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2019-11-07 00:44:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2019-11-07 00:44:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2019-11-07 00:44:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 879 transitions. [2019-11-07 00:44:59,509 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 879 transitions. Word has length 121 [2019-11-07 00:44:59,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:59,511 INFO L462 AbstractCegarLoop]: Abstraction has 562 states and 879 transitions. [2019-11-07 00:44:59,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:44:59,512 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 879 transitions. [2019-11-07 00:44:59,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-07 00:44:59,518 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:59,519 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:59,519 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:59,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:59,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1189017277, now seen corresponding path program 1 times [2019-11-07 00:44:59,519 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:59,520 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844614737] [2019-11-07 00:44:59,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:59,650 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844614737] [2019-11-07 00:44:59,650 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:59,650 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:59,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684464422] [2019-11-07 00:44:59,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:59,652 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:59,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:59,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:59,652 INFO L87 Difference]: Start difference. First operand 562 states and 879 transitions. Second operand 4 states. [2019-11-07 00:44:59,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:59,702 INFO L93 Difference]: Finished difference Result 1066 states and 1695 transitions. [2019-11-07 00:44:59,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:44:59,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-11-07 00:44:59,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:59,707 INFO L225 Difference]: With dead ends: 1066 [2019-11-07 00:44:59,707 INFO L226 Difference]: Without dead ends: 562 [2019-11-07 00:44:59,711 INFO L630 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 [2019-11-07 00:44:59,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2019-11-07 00:44:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2019-11-07 00:44:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2019-11-07 00:44:59,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 878 transitions. [2019-11-07 00:44:59,737 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 878 transitions. Word has length 122 [2019-11-07 00:44:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:59,738 INFO L462 AbstractCegarLoop]: Abstraction has 562 states and 878 transitions. [2019-11-07 00:44:59,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:59,738 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 878 transitions. [2019-11-07 00:44:59,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-07 00:44:59,744 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:59,744 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:44:59,744 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:59,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:59,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1194907461, now seen corresponding path program 1 times [2019-11-07 00:44:59,745 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:59,745 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922452552] [2019-11-07 00:44:59,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:44:59,934 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922452552] [2019-11-07 00:44:59,934 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:59,934 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:44:59,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933197498] [2019-11-07 00:44:59,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:44:59,935 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:59,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:44:59,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:44:59,936 INFO L87 Difference]: Start difference. First operand 562 states and 878 transitions. Second operand 12 states. [2019-11-07 00:45:00,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:00,139 INFO L93 Difference]: Finished difference Result 1067 states and 1694 transitions. [2019-11-07 00:45:00,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:45:00,140 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2019-11-07 00:45:00,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:00,144 INFO L225 Difference]: With dead ends: 1067 [2019-11-07 00:45:00,144 INFO L226 Difference]: Without dead ends: 562 [2019-11-07 00:45:00,148 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:45:00,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2019-11-07 00:45:00,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2019-11-07 00:45:00,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2019-11-07 00:45:00,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 877 transitions. [2019-11-07 00:45:00,168 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 877 transitions. Word has length 122 [2019-11-07 00:45:00,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:00,169 INFO L462 AbstractCegarLoop]: Abstraction has 562 states and 877 transitions. [2019-11-07 00:45:00,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:45:00,169 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 877 transitions. [2019-11-07 00:45:00,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-07 00:45:00,172 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:00,172 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:00,172 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:00,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:00,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1301394887, now seen corresponding path program 1 times [2019-11-07 00:45:00,173 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:00,173 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498207061] [2019-11-07 00:45:00,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:00,390 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498207061] [2019-11-07 00:45:00,392 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:00,392 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:45:00,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616738889] [2019-11-07 00:45:00,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:45:00,394 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:00,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:45:00,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:45:00,395 INFO L87 Difference]: Start difference. First operand 562 states and 877 transitions. Second operand 9 states. [2019-11-07 00:45:03,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:03,731 INFO L93 Difference]: Finished difference Result 1064 states and 1708 transitions. [2019-11-07 00:45:03,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:45:03,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 123 [2019-11-07 00:45:03,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:03,738 INFO L225 Difference]: With dead ends: 1064 [2019-11-07 00:45:03,738 INFO L226 Difference]: Without dead ends: 568 [2019-11-07 00:45:03,742 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:45:03,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-11-07 00:45:03,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 566. [2019-11-07 00:45:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2019-11-07 00:45:03,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 896 transitions. [2019-11-07 00:45:03,767 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 896 transitions. Word has length 123 [2019-11-07 00:45:03,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:03,768 INFO L462 AbstractCegarLoop]: Abstraction has 566 states and 896 transitions. [2019-11-07 00:45:03,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:45:03,768 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 896 transitions. [2019-11-07 00:45:03,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-07 00:45:03,771 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:03,771 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:03,772 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:03,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:03,772 INFO L82 PathProgramCache]: Analyzing trace with hash -613976497, now seen corresponding path program 1 times [2019-11-07 00:45:03,772 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:03,772 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674937391] [2019-11-07 00:45:03,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:03,930 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674937391] [2019-11-07 00:45:03,930 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:03,930 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:45:03,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725444969] [2019-11-07 00:45:03,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:45:03,931 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:03,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:45:03,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:45:03,932 INFO L87 Difference]: Start difference. First operand 566 states and 896 transitions. Second operand 8 states. [2019-11-07 00:45:10,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:10,017 INFO L93 Difference]: Finished difference Result 1990 states and 3279 transitions. [2019-11-07 00:45:10,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 00:45:10,018 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2019-11-07 00:45:10,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:10,031 INFO L225 Difference]: With dead ends: 1990 [2019-11-07 00:45:10,031 INFO L226 Difference]: Without dead ends: 1490 [2019-11-07 00:45:10,035 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:45:10,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2019-11-07 00:45:10,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1451. [2019-11-07 00:45:10,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1451 states. [2019-11-07 00:45:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 2319 transitions. [2019-11-07 00:45:10,110 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 2319 transitions. Word has length 124 [2019-11-07 00:45:10,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:10,111 INFO L462 AbstractCegarLoop]: Abstraction has 1451 states and 2319 transitions. [2019-11-07 00:45:10,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:45:10,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 2319 transitions. [2019-11-07 00:45:10,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-07 00:45:10,115 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:10,115 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:10,115 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:10,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:10,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1563620061, now seen corresponding path program 1 times [2019-11-07 00:45:10,116 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:10,116 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930231799] [2019-11-07 00:45:10,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:10,273 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930231799] [2019-11-07 00:45:10,273 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:10,274 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:45:10,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678499545] [2019-11-07 00:45:10,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:45:10,275 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:10,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:45:10,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:45:10,276 INFO L87 Difference]: Start difference. First operand 1451 states and 2319 transitions. Second operand 9 states. [2019-11-07 00:45:17,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:17,799 INFO L93 Difference]: Finished difference Result 4654 states and 7664 transitions. [2019-11-07 00:45:17,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 00:45:17,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2019-11-07 00:45:17,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:17,829 INFO L225 Difference]: With dead ends: 4654 [2019-11-07 00:45:17,830 INFO L226 Difference]: Without dead ends: 3269 [2019-11-07 00:45:17,839 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:45:17,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2019-11-07 00:45:18,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3046. [2019-11-07 00:45:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3046 states. [2019-11-07 00:45:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4929 transitions. [2019-11-07 00:45:18,026 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4929 transitions. Word has length 130 [2019-11-07 00:45:18,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:18,028 INFO L462 AbstractCegarLoop]: Abstraction has 3046 states and 4929 transitions. [2019-11-07 00:45:18,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:45:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4929 transitions. [2019-11-07 00:45:18,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-07 00:45:18,032 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:18,032 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:18,032 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:18,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:18,033 INFO L82 PathProgramCache]: Analyzing trace with hash -430429468, now seen corresponding path program 1 times [2019-11-07 00:45:18,033 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:18,033 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529985494] [2019-11-07 00:45:18,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:18,217 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529985494] [2019-11-07 00:45:18,217 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:18,217 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:45:18,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651120319] [2019-11-07 00:45:18,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:45:18,219 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:18,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:45:18,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:45:18,220 INFO L87 Difference]: Start difference. First operand 3046 states and 4929 transitions. Second operand 5 states. [2019-11-07 00:45:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:45:20,908 INFO L93 Difference]: Finished difference Result 6665 states and 10769 transitions. [2019-11-07 00:45:20,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:45:20,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2019-11-07 00:45:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:45:20,973 INFO L225 Difference]: With dead ends: 6665 [2019-11-07 00:45:20,973 INFO L226 Difference]: Without dead ends: 4471 [2019-11-07 00:45:20,984 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:45:20,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2019-11-07 00:45:21,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4444. [2019-11-07 00:45:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4444 states. [2019-11-07 00:45:21,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4444 states to 4444 states and 7119 transitions. [2019-11-07 00:45:21,198 INFO L78 Accepts]: Start accepts. Automaton has 4444 states and 7119 transitions. Word has length 130 [2019-11-07 00:45:21,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:45:21,199 INFO L462 AbstractCegarLoop]: Abstraction has 4444 states and 7119 transitions. [2019-11-07 00:45:21,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:45:21,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4444 states and 7119 transitions. [2019-11-07 00:45:21,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-07 00:45:21,202 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:45:21,202 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:45:21,203 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:45:21,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:45:21,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1936265126, now seen corresponding path program 1 times [2019-11-07 00:45:21,203 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:45:21,204 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210418848] [2019-11-07 00:45:21,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:45:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:45:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:45:21,335 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210418848] [2019-11-07 00:45:21,335 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:45:21,335 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:45:21,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240865385] [2019-11-07 00:45:21,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:45:21,336 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:45:21,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:45:21,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:45:21,337 INFO L87 Difference]: Start difference. First operand 4444 states and 7119 transitions. Second operand 7 states.