/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_spec2_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:41:47,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:41:47,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:41:47,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:41:47,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:41:47,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:41:47,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:41:47,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:41:47,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:41:47,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:41:47,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:41:47,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:41:47,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:41:47,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:41:47,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:41:47,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:41:47,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:41:47,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:41:47,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:41:47,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:41:47,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:41:47,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:41:47,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:41:47,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:41:47,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:41:47,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:41:47,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:41:47,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:41:47,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:41:47,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:41:47,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:41:47,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:41:47,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:41:47,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:41:47,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:41:47,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:41:47,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:41:47,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:41:47,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:41:47,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:41:47,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:41:47,923 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 00:41:47,953 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:41:47,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:41:47,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:41:47,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:41:47,956 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:41:47,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:41:47,956 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:41:47,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:41:47,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:41:47,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:41:47,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:41:47,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:41:47,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:41:47,959 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:41:47,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:41:47,959 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:41:47,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:41:47,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:41:47,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:41:47,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:41:47,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:41:47,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:41:47,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:41:47,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:41:47,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:41:47,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:41:47,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:41:47,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:41:47,962 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 00:41:48,269 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:41:48,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:41:48,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:41:48,298 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:41:48,298 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:41:48,299 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product18.cil.c [2019-11-07 00:41:48,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a92f44f10/031a9a836acf499bb9df9f95b883629a/FLAG59846f381 [2019-11-07 00:41:48,999 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:41:49,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product18.cil.c [2019-11-07 00:41:49,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a92f44f10/031a9a836acf499bb9df9f95b883629a/FLAG59846f381 [2019-11-07 00:41:49,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a92f44f10/031a9a836acf499bb9df9f95b883629a [2019-11-07 00:41:49,209 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:41:49,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:41:49,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:41:49,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:41:49,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:41:49,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:41:49" (1/1) ... [2019-11-07 00:41:49,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16372189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:49, skipping insertion in model container [2019-11-07 00:41:49,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:41:49" (1/1) ... [2019-11-07 00:41:49,232 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:41:49,326 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:41:49,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:41:49,915 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:41:50,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:41:50,207 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:41:50,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:50 WrapperNode [2019-11-07 00:41:50,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:41:50,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:41:50,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:41:50,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:41:50,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:50" (1/1) ... [2019-11-07 00:41:50,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:50" (1/1) ... [2019-11-07 00:41:50,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:50" (1/1) ... [2019-11-07 00:41:50,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:50" (1/1) ... [2019-11-07 00:41:50,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:50" (1/1) ... [2019-11-07 00:41:50,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:50" (1/1) ... [2019-11-07 00:41:50,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:50" (1/1) ... [2019-11-07 00:41:50,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:41:50,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:41:50,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:41:50,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:41:50,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:50" (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 00:41:50,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:41:50,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:41:50,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:41:50,498 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:41:50,498 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:41:50,499 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:41:50,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:41:50,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:41:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:41:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:41:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:41:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:41:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:41:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:41:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:41:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:41:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 00:41:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:41:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 00:41:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:41:50,506 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:41:50,507 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:41:50,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:41:50,507 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:41:50,507 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:41:50,508 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:41:50,508 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:41:50,508 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:41:50,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:41:50,509 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:41:50,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:41:50,509 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:41:50,509 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:41:50,510 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:41:50,510 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:41:50,510 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2019-11-07 00:41:50,510 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:41:50,511 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__weight [2019-11-07 00:41:50,511 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:41:50,511 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:41:50,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:41:50,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:41:50,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:41:50,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:41:50,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:41:50,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:41:50,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:41:50,512 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:41:50,513 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:41:50,513 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:41:50,513 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:41:50,513 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:41:50,513 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:41:50,513 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:41:50,514 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:41:50,514 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:41:50,514 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:41:50,514 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:41:50,514 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:41:50,514 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:41:50,515 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:41:50,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:41:50,515 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:41:50,516 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:41:50,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 00:41:50,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 00:41:50,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-11-07 00:41:50,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-11-07 00:41:50,517 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:41:50,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:41:50,517 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:41:50,517 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:41:50,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:41:50,518 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:41:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:41:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:41:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:41:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:41:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:41:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:41:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:41:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:41:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:41:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:41:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:41:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:41:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:41:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:41:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:41:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:41:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:41:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:41:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:41:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:41:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:41:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:41:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:41:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:41:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:41:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:41:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:41:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:41:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:41:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:41:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:41:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:41:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:41:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:41:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:41:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:41:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 00:41:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 00:41:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:41:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 00:41:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:41:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:41:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:41:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:41:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:41:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:41:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:41:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:41:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:41:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2019-11-07 00:41:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-11-07 00:41:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__weight [2019-11-07 00:41:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:41:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:41:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:41:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:41:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:41:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:41:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:41:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:41:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:41:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:41:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:41:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:41:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:41:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:41:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:41:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:41:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:41:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:41:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:41:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:41:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:41:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:41:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:41:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:41:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:41:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:41:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:41:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:41:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:41:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:41:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:41:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:41:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:41:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 00:41:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-11-07 00:41:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:41:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:41:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:41:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:41:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:41:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:41:52,723 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:41:52,723 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:41:52,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:41:52 BoogieIcfgContainer [2019-11-07 00:41:52,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:41:52,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:41:52,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:41:52,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:41:52,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:41:49" (1/3) ... [2019-11-07 00:41:52,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520a0fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:41:52, skipping insertion in model container [2019-11-07 00:41:52,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:41:50" (2/3) ... [2019-11-07 00:41:52,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520a0fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:41:52, skipping insertion in model container [2019-11-07 00:41:52,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:41:52" (3/3) ... [2019-11-07 00:41:52,734 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product18.cil.c [2019-11-07 00:41:52,744 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:41:52,755 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:41:52,767 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:41:52,802 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:41:52,803 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:41:52,803 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:41:52,803 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:41:52,803 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:41:52,803 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:41:52,803 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:41:52,803 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:41:52,850 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2019-11-07 00:41:52,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-07 00:41:52,870 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:52,871 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] [2019-11-07 00:41:52,873 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:52,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:52,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1188892362, now seen corresponding path program 1 times [2019-11-07 00:41:52,889 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:52,889 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882630125] [2019-11-07 00:41:52,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:53,480 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 00:41:53,481 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882630125] [2019-11-07 00:41:53,482 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:53,482 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:41:53,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224441763] [2019-11-07 00:41:53,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:41:53,490 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:53,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:41:53,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:41:53,508 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2019-11-07 00:41:53,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:53,712 INFO L93 Difference]: Finished difference Result 1165 states and 1897 transitions. [2019-11-07 00:41:53,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:41:53,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2019-11-07 00:41:53,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:53,744 INFO L225 Difference]: With dead ends: 1165 [2019-11-07 00:41:53,745 INFO L226 Difference]: Without dead ends: 591 [2019-11-07 00:41:53,758 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 00:41:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2019-11-07 00:41:53,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2019-11-07 00:41:53,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-11-07 00:41:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 950 transitions. [2019-11-07 00:41:53,871 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 950 transitions. Word has length 85 [2019-11-07 00:41:53,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:53,871 INFO L462 AbstractCegarLoop]: Abstraction has 591 states and 950 transitions. [2019-11-07 00:41:53,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:41:53,872 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 950 transitions. [2019-11-07 00:41:53,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-07 00:41:53,878 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:53,878 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] [2019-11-07 00:41:53,879 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:53,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:53,879 INFO L82 PathProgramCache]: Analyzing trace with hash -425590234, now seen corresponding path program 1 times [2019-11-07 00:41:53,880 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:53,880 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878126647] [2019-11-07 00:41:53,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:54,073 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 00:41:54,073 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878126647] [2019-11-07 00:41:54,073 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:54,074 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:41:54,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578555696] [2019-11-07 00:41:54,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:41:54,079 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:54,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:41:54,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:41:54,080 INFO L87 Difference]: Start difference. First operand 591 states and 950 transitions. Second operand 4 states. [2019-11-07 00:41:54,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:54,161 INFO L93 Difference]: Finished difference Result 1145 states and 1858 transitions. [2019-11-07 00:41:54,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:41:54,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-11-07 00:41:54,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:54,168 INFO L225 Difference]: With dead ends: 1145 [2019-11-07 00:41:54,168 INFO L226 Difference]: Without dead ends: 591 [2019-11-07 00:41:54,172 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 00:41:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2019-11-07 00:41:54,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2019-11-07 00:41:54,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-11-07 00:41:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 949 transitions. [2019-11-07 00:41:54,212 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 949 transitions. Word has length 88 [2019-11-07 00:41:54,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:54,214 INFO L462 AbstractCegarLoop]: Abstraction has 591 states and 949 transitions. [2019-11-07 00:41:54,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:41:54,217 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 949 transitions. [2019-11-07 00:41:54,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-07 00:41:54,221 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:54,222 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] [2019-11-07 00:41:54,222 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:54,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:54,223 INFO L82 PathProgramCache]: Analyzing trace with hash -737262235, now seen corresponding path program 1 times [2019-11-07 00:41:54,225 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:54,225 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229541292] [2019-11-07 00:41:54,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:54,448 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 00:41:54,448 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229541292] [2019-11-07 00:41:54,448 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:54,449 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:41:54,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197065602] [2019-11-07 00:41:54,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:41:54,450 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:54,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:41:54,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:41:54,451 INFO L87 Difference]: Start difference. First operand 591 states and 949 transitions. Second operand 4 states. [2019-11-07 00:41:54,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:54,532 INFO L93 Difference]: Finished difference Result 1145 states and 1857 transitions. [2019-11-07 00:41:54,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:41:54,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2019-11-07 00:41:54,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:54,542 INFO L225 Difference]: With dead ends: 1145 [2019-11-07 00:41:54,542 INFO L226 Difference]: Without dead ends: 591 [2019-11-07 00:41:54,547 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 00:41:54,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2019-11-07 00:41:54,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2019-11-07 00:41:54,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-11-07 00:41:54,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 948 transitions. [2019-11-07 00:41:54,599 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 948 transitions. Word has length 89 [2019-11-07 00:41:54,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:54,600 INFO L462 AbstractCegarLoop]: Abstraction has 591 states and 948 transitions. [2019-11-07 00:41:54,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:41:54,600 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 948 transitions. [2019-11-07 00:41:54,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-07 00:41:54,604 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:54,604 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] [2019-11-07 00:41:54,604 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:54,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:54,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1727810174, now seen corresponding path program 1 times [2019-11-07 00:41:54,605 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:54,605 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341774730] [2019-11-07 00:41:54,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:54,774 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 00:41:54,774 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341774730] [2019-11-07 00:41:54,774 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:54,774 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:41:54,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577935605] [2019-11-07 00:41:54,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:41:54,776 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:54,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:41:54,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:41:54,776 INFO L87 Difference]: Start difference. First operand 591 states and 948 transitions. Second operand 4 states. [2019-11-07 00:41:54,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:54,841 INFO L93 Difference]: Finished difference Result 1145 states and 1856 transitions. [2019-11-07 00:41:54,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:41:54,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-11-07 00:41:54,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:54,848 INFO L225 Difference]: With dead ends: 1145 [2019-11-07 00:41:54,848 INFO L226 Difference]: Without dead ends: 591 [2019-11-07 00:41:54,851 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 00:41:54,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2019-11-07 00:41:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2019-11-07 00:41:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-11-07 00:41:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 947 transitions. [2019-11-07 00:41:54,877 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 947 transitions. Word has length 90 [2019-11-07 00:41:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:54,878 INFO L462 AbstractCegarLoop]: Abstraction has 591 states and 947 transitions. [2019-11-07 00:41:54,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:41:54,878 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 947 transitions. [2019-11-07 00:41:54,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-07 00:41:54,885 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:54,885 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] [2019-11-07 00:41:54,885 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:54,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:54,886 INFO L82 PathProgramCache]: Analyzing trace with hash 2006291585, now seen corresponding path program 1 times [2019-11-07 00:41:54,886 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:54,886 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555265882] [2019-11-07 00:41:54,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:55,009 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 00:41:55,010 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555265882] [2019-11-07 00:41:55,010 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:55,010 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:41:55,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875416705] [2019-11-07 00:41:55,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:41:55,011 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:55,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:41:55,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:41:55,012 INFO L87 Difference]: Start difference. First operand 591 states and 947 transitions. Second operand 4 states. [2019-11-07 00:41:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:55,069 INFO L93 Difference]: Finished difference Result 1145 states and 1855 transitions. [2019-11-07 00:41:55,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:41:55,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-11-07 00:41:55,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:55,075 INFO L225 Difference]: With dead ends: 1145 [2019-11-07 00:41:55,076 INFO L226 Difference]: Without dead ends: 591 [2019-11-07 00:41:55,079 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 00:41:55,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2019-11-07 00:41:55,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2019-11-07 00:41:55,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-11-07 00:41:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 946 transitions. [2019-11-07 00:41:55,104 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 946 transitions. Word has length 91 [2019-11-07 00:41:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:55,104 INFO L462 AbstractCegarLoop]: Abstraction has 591 states and 946 transitions. [2019-11-07 00:41:55,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:41:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 946 transitions. [2019-11-07 00:41:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 00:41:55,107 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:55,107 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] [2019-11-07 00:41:55,107 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:55,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:55,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1880678622, now seen corresponding path program 1 times [2019-11-07 00:41:55,108 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:55,108 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819531193] [2019-11-07 00:41:55,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:55,357 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 00:41:55,357 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819531193] [2019-11-07 00:41:55,357 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:55,357 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:41:55,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573677401] [2019-11-07 00:41:55,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:41:55,358 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:55,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:41:55,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:41:55,359 INFO L87 Difference]: Start difference. First operand 591 states and 946 transitions. Second operand 10 states. [2019-11-07 00:41:55,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:55,540 INFO L93 Difference]: Finished difference Result 1103 states and 1775 transitions. [2019-11-07 00:41:55,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:41:55,542 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2019-11-07 00:41:55,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:55,547 INFO L225 Difference]: With dead ends: 1103 [2019-11-07 00:41:55,548 INFO L226 Difference]: Without dead ends: 600 [2019-11-07 00:41:55,551 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 00:41:55,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2019-11-07 00:41:55,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 598. [2019-11-07 00:41:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-11-07 00:41:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 955 transitions. [2019-11-07 00:41:55,582 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 955 transitions. Word has length 92 [2019-11-07 00:41:55,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:55,583 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 955 transitions. [2019-11-07 00:41:55,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:41:55,583 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 955 transitions. [2019-11-07 00:41:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 00:41:55,589 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:55,589 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] [2019-11-07 00:41:55,589 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:55,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:55,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1901015997, now seen corresponding path program 1 times [2019-11-07 00:41:55,590 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:55,590 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129468780] [2019-11-07 00:41:55,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:55,715 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 00:41:55,716 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129468780] [2019-11-07 00:41:55,716 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:55,716 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:41:55,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492608013] [2019-11-07 00:41:55,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:41:55,717 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:55,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:41:55,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:41:55,718 INFO L87 Difference]: Start difference. First operand 598 states and 955 transitions. Second operand 4 states. [2019-11-07 00:41:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:55,783 INFO L93 Difference]: Finished difference Result 1151 states and 1861 transitions. [2019-11-07 00:41:55,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:41:55,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-11-07 00:41:55,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:55,794 INFO L225 Difference]: With dead ends: 1151 [2019-11-07 00:41:55,795 INFO L226 Difference]: Without dead ends: 585 [2019-11-07 00:41:55,799 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 00:41:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2019-11-07 00:41:55,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2019-11-07 00:41:55,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2019-11-07 00:41:55,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 932 transitions. [2019-11-07 00:41:55,826 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 932 transitions. Word has length 92 [2019-11-07 00:41:55,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:55,826 INFO L462 AbstractCegarLoop]: Abstraction has 585 states and 932 transitions. [2019-11-07 00:41:55,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:41:55,827 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 932 transitions. [2019-11-07 00:41:55,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-07 00:41:55,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:55,830 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] [2019-11-07 00:41:55,830 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:55,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:55,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1516088769, now seen corresponding path program 1 times [2019-11-07 00:41:55,831 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:55,831 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235705901] [2019-11-07 00:41:55,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:55,981 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 00:41:55,981 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235705901] [2019-11-07 00:41:55,982 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:55,982 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:41:55,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294386595] [2019-11-07 00:41:55,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:41:55,983 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:55,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:41:55,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:41:55,983 INFO L87 Difference]: Start difference. First operand 585 states and 932 transitions. Second operand 6 states. [2019-11-07 00:41:56,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:56,210 INFO L93 Difference]: Finished difference Result 1091 states and 1753 transitions. [2019-11-07 00:41:56,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:41:56,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-11-07 00:41:56,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:56,216 INFO L225 Difference]: With dead ends: 1091 [2019-11-07 00:41:56,216 INFO L226 Difference]: Without dead ends: 585 [2019-11-07 00:41:56,220 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 00:41:56,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2019-11-07 00:41:56,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2019-11-07 00:41:56,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2019-11-07 00:41:56,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 928 transitions. [2019-11-07 00:41:56,306 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 928 transitions. Word has length 93 [2019-11-07 00:41:56,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:56,307 INFO L462 AbstractCegarLoop]: Abstraction has 585 states and 928 transitions. [2019-11-07 00:41:56,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:41:56,307 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 928 transitions. [2019-11-07 00:41:56,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-07 00:41:56,309 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:56,310 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] [2019-11-07 00:41:56,310 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:56,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:56,310 INFO L82 PathProgramCache]: Analyzing trace with hash 645733217, now seen corresponding path program 1 times [2019-11-07 00:41:56,311 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:56,311 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525449848] [2019-11-07 00:41:56,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:56,440 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 00:41:56,441 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525449848] [2019-11-07 00:41:56,441 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:56,442 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:41:56,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384758453] [2019-11-07 00:41:56,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:41:56,443 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:56,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:41:56,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:41:56,443 INFO L87 Difference]: Start difference. First operand 585 states and 928 transitions. Second operand 6 states. [2019-11-07 00:41:56,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:56,641 INFO L93 Difference]: Finished difference Result 1091 states and 1749 transitions. [2019-11-07 00:41:56,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:41:56,644 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2019-11-07 00:41:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:56,649 INFO L225 Difference]: With dead ends: 1091 [2019-11-07 00:41:56,649 INFO L226 Difference]: Without dead ends: 585 [2019-11-07 00:41:56,652 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 00:41:56,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2019-11-07 00:41:56,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2019-11-07 00:41:56,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2019-11-07 00:41:56,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 924 transitions. [2019-11-07 00:41:56,679 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 924 transitions. Word has length 94 [2019-11-07 00:41:56,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:56,679 INFO L462 AbstractCegarLoop]: Abstraction has 585 states and 924 transitions. [2019-11-07 00:41:56,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:41:56,679 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 924 transitions. [2019-11-07 00:41:56,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 00:41:56,681 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:56,682 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] [2019-11-07 00:41:56,682 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:56,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:56,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1096058748, now seen corresponding path program 1 times [2019-11-07 00:41:56,683 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:56,683 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798440771] [2019-11-07 00:41:56,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:56,815 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 00:41:56,815 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798440771] [2019-11-07 00:41:56,816 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:56,816 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:41:56,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802464435] [2019-11-07 00:41:56,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:41:56,818 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:56,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:41:56,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:41:56,818 INFO L87 Difference]: Start difference. First operand 585 states and 924 transitions. Second operand 6 states. [2019-11-07 00:41:57,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:57,030 INFO L93 Difference]: Finished difference Result 1091 states and 1745 transitions. [2019-11-07 00:41:57,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:41:57,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-11-07 00:41:57,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:57,036 INFO L225 Difference]: With dead ends: 1091 [2019-11-07 00:41:57,037 INFO L226 Difference]: Without dead ends: 585 [2019-11-07 00:41:57,044 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 00:41:57,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2019-11-07 00:41:57,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2019-11-07 00:41:57,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2019-11-07 00:41:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 920 transitions. [2019-11-07 00:41:57,065 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 920 transitions. Word has length 95 [2019-11-07 00:41:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:57,065 INFO L462 AbstractCegarLoop]: Abstraction has 585 states and 920 transitions. [2019-11-07 00:41:57,065 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:41:57,066 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 920 transitions. [2019-11-07 00:41:57,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 00:41:57,068 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:57,068 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] [2019-11-07 00:41:57,068 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:57,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:57,068 INFO L82 PathProgramCache]: Analyzing trace with hash -48204540, now seen corresponding path program 1 times [2019-11-07 00:41:57,069 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:57,069 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105621977] [2019-11-07 00:41:57,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:57,220 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 00:41:57,221 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105621977] [2019-11-07 00:41:57,221 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:57,221 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:41:57,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987610620] [2019-11-07 00:41:57,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:41:57,223 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:57,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:41:57,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:41:57,223 INFO L87 Difference]: Start difference. First operand 585 states and 920 transitions. Second operand 7 states. [2019-11-07 00:41:57,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:57,344 INFO L93 Difference]: Finished difference Result 1091 states and 1741 transitions. [2019-11-07 00:41:57,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:41:57,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-11-07 00:41:57,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:57,352 INFO L225 Difference]: With dead ends: 1091 [2019-11-07 00:41:57,352 INFO L226 Difference]: Without dead ends: 564 [2019-11-07 00:41:57,356 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 00:41:57,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-11-07 00:41:57,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2019-11-07 00:41:57,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2019-11-07 00:41:57,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 886 transitions. [2019-11-07 00:41:57,420 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 886 transitions. Word has length 95 [2019-11-07 00:41:57,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:57,420 INFO L462 AbstractCegarLoop]: Abstraction has 564 states and 886 transitions. [2019-11-07 00:41:57,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:41:57,420 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 886 transitions. [2019-11-07 00:41:57,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 00:41:57,422 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:57,422 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] [2019-11-07 00:41:57,422 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:57,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:57,423 INFO L82 PathProgramCache]: Analyzing trace with hash 704168390, now seen corresponding path program 1 times [2019-11-07 00:41:57,423 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:57,423 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717398752] [2019-11-07 00:41:57,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:57,550 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 00:41:57,551 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717398752] [2019-11-07 00:41:57,551 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:57,552 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:41:57,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342930062] [2019-11-07 00:41:57,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:41:57,553 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:57,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:41:57,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:41:57,554 INFO L87 Difference]: Start difference. First operand 564 states and 886 transitions. Second operand 6 states. [2019-11-07 00:41:57,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:57,671 INFO L93 Difference]: Finished difference Result 1070 states and 1707 transitions. [2019-11-07 00:41:57,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:41:57,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-11-07 00:41:57,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:57,677 INFO L225 Difference]: With dead ends: 1070 [2019-11-07 00:41:57,677 INFO L226 Difference]: Without dead ends: 564 [2019-11-07 00:41:57,680 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 00:41:57,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-11-07 00:41:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2019-11-07 00:41:57,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2019-11-07 00:41:57,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 885 transitions. [2019-11-07 00:41:57,704 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 885 transitions. Word has length 96 [2019-11-07 00:41:57,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:57,706 INFO L462 AbstractCegarLoop]: Abstraction has 564 states and 885 transitions. [2019-11-07 00:41:57,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:41:57,706 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 885 transitions. [2019-11-07 00:41:57,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 00:41:57,708 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:57,708 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] [2019-11-07 00:41:57,709 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:57,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:57,709 INFO L82 PathProgramCache]: Analyzing trace with hash 637838025, now seen corresponding path program 1 times [2019-11-07 00:41:57,709 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:57,710 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960118809] [2019-11-07 00:41:57,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:57,840 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 00:41:57,840 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960118809] [2019-11-07 00:41:57,841 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:57,841 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:41:57,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269582781] [2019-11-07 00:41:57,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:41:57,842 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:57,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:41:57,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:41:57,843 INFO L87 Difference]: Start difference. First operand 564 states and 885 transitions. Second operand 6 states. [2019-11-07 00:41:57,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:57,957 INFO L93 Difference]: Finished difference Result 1070 states and 1706 transitions. [2019-11-07 00:41:57,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:41:57,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-11-07 00:41:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:57,965 INFO L225 Difference]: With dead ends: 1070 [2019-11-07 00:41:57,965 INFO L226 Difference]: Without dead ends: 564 [2019-11-07 00:41:57,969 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 00:41:57,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-11-07 00:41:57,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2019-11-07 00:41:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2019-11-07 00:41:57,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 884 transitions. [2019-11-07 00:41:57,995 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 884 transitions. Word has length 97 [2019-11-07 00:41:57,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:57,997 INFO L462 AbstractCegarLoop]: Abstraction has 564 states and 884 transitions. [2019-11-07 00:41:57,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:41:57,998 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 884 transitions. [2019-11-07 00:41:57,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-07 00:41:57,999 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:58,000 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] [2019-11-07 00:41:58,000 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:58,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:58,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1457200085, now seen corresponding path program 1 times [2019-11-07 00:41:58,001 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:58,001 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541230472] [2019-11-07 00:41:58,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:58,182 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 00:41:58,182 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541230472] [2019-11-07 00:41:58,183 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:58,183 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:41:58,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647645692] [2019-11-07 00:41:58,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:41:58,184 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:58,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:41:58,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:41:58,184 INFO L87 Difference]: Start difference. First operand 564 states and 884 transitions. Second operand 12 states. [2019-11-07 00:41:58,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:41:58,358 INFO L93 Difference]: Finished difference Result 1071 states and 1705 transitions. [2019-11-07 00:41:58,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:41:58,359 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2019-11-07 00:41:58,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:41:58,363 INFO L225 Difference]: With dead ends: 1071 [2019-11-07 00:41:58,364 INFO L226 Difference]: Without dead ends: 564 [2019-11-07 00:41:58,367 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 00:41:58,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-11-07 00:41:58,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2019-11-07 00:41:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2019-11-07 00:41:58,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 883 transitions. [2019-11-07 00:41:58,419 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 883 transitions. Word has length 98 [2019-11-07 00:41:58,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:41:58,420 INFO L462 AbstractCegarLoop]: Abstraction has 564 states and 883 transitions. [2019-11-07 00:41:58,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:41:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 883 transitions. [2019-11-07 00:41:58,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-07 00:41:58,422 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:41:58,423 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] [2019-11-07 00:41:58,423 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:41:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:41:58,423 INFO L82 PathProgramCache]: Analyzing trace with hash 910887794, now seen corresponding path program 1 times [2019-11-07 00:41:58,423 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:41:58,424 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200898291] [2019-11-07 00:41:58,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:41:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:41:58,594 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 00:41:58,595 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200898291] [2019-11-07 00:41:58,595 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:41:58,595 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:41:58,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405395560] [2019-11-07 00:41:58,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:41:58,596 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:41:58,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:41:58,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:41:58,597 INFO L87 Difference]: Start difference. First operand 564 states and 883 transitions. Second operand 6 states. [2019-11-07 00:42:02,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:02,275 INFO L93 Difference]: Finished difference Result 1670 states and 2699 transitions. [2019-11-07 00:42:02,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:02,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-11-07 00:42:02,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:02,286 INFO L225 Difference]: With dead ends: 1670 [2019-11-07 00:42:02,286 INFO L226 Difference]: Without dead ends: 1172 [2019-11-07 00:42:02,291 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:02,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2019-11-07 00:42:02,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1047. [2019-11-07 00:42:02,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2019-11-07 00:42:02,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1686 transitions. [2019-11-07 00:42:02,351 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1686 transitions. Word has length 99 [2019-11-07 00:42:02,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:02,352 INFO L462 AbstractCegarLoop]: Abstraction has 1047 states and 1686 transitions. [2019-11-07 00:42:02,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:02,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1686 transitions. [2019-11-07 00:42:02,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 00:42:02,360 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:02,360 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, 1] [2019-11-07 00:42:02,360 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:02,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:02,361 INFO L82 PathProgramCache]: Analyzing trace with hash 728641115, now seen corresponding path program 1 times [2019-11-07 00:42:02,361 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:02,361 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971934856] [2019-11-07 00:42:02,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:02,593 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 00:42:02,593 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971934856] [2019-11-07 00:42:02,593 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:02,594 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:42:02,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124195495] [2019-11-07 00:42:02,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:42:02,595 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:02,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:42:02,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:42:02,596 INFO L87 Difference]: Start difference. First operand 1047 states and 1686 transitions. Second operand 12 states. [2019-11-07 00:42:12,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:12,721 INFO L93 Difference]: Finished difference Result 3352 states and 5434 transitions. [2019-11-07 00:42:12,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-07 00:42:12,722 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 131 [2019-11-07 00:42:12,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:12,737 INFO L225 Difference]: With dead ends: 3352 [2019-11-07 00:42:12,737 INFO L226 Difference]: Without dead ends: 2371 [2019-11-07 00:42:12,744 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:42:12,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2019-11-07 00:42:12,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2313. [2019-11-07 00:42:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2313 states. [2019-11-07 00:42:12,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3713 transitions. [2019-11-07 00:42:12,877 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3713 transitions. Word has length 131 [2019-11-07 00:42:12,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:12,877 INFO L462 AbstractCegarLoop]: Abstraction has 2313 states and 3713 transitions. [2019-11-07 00:42:12,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:42:12,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3713 transitions. [2019-11-07 00:42:12,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 00:42:12,882 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:12,882 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, 1, 1] [2019-11-07 00:42:12,883 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:12,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:12,883 INFO L82 PathProgramCache]: Analyzing trace with hash 552853337, now seen corresponding path program 1 times [2019-11-07 00:42:12,883 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:12,884 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638495122] [2019-11-07 00:42:12,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:13,054 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 00:42:13,054 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638495122] [2019-11-07 00:42:13,055 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:13,055 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:42:13,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337528148] [2019-11-07 00:42:13,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:42:13,056 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:13,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:42:13,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:42:13,056 INFO L87 Difference]: Start difference. First operand 2313 states and 3713 transitions. Second operand 9 states. [2019-11-07 00:42:16,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:16,309 INFO L93 Difference]: Finished difference Result 4600 states and 7543 transitions. [2019-11-07 00:42:16,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:42:16,310 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2019-11-07 00:42:16,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:16,350 INFO L225 Difference]: With dead ends: 4600 [2019-11-07 00:42:16,353 INFO L226 Difference]: Without dead ends: 2353 [2019-11-07 00:42:16,381 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 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 00:42:16,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2019-11-07 00:42:16,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 2337. [2019-11-07 00:42:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2337 states. [2019-11-07 00:42:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3797 transitions. [2019-11-07 00:42:16,663 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3797 transitions. Word has length 132 [2019-11-07 00:42:16,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:16,664 INFO L462 AbstractCegarLoop]: Abstraction has 2337 states and 3797 transitions. [2019-11-07 00:42:16,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:42:16,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3797 transitions. [2019-11-07 00:42:16,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-07 00:42:16,675 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:16,675 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, 1, 1, 1] [2019-11-07 00:42:16,676 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:16,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:16,676 INFO L82 PathProgramCache]: Analyzing trace with hash -2055663078, now seen corresponding path program 1 times [2019-11-07 00:42:16,676 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:16,676 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347805477] [2019-11-07 00:42:16,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:16,913 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 00:42:16,914 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347805477] [2019-11-07 00:42:16,914 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:16,914 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:42:16,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626443722] [2019-11-07 00:42:16,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:42:16,915 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:16,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:42:16,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:16,916 INFO L87 Difference]: Start difference. First operand 2337 states and 3797 transitions. Second operand 8 states. [2019-11-07 00:42:22,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:22,788 INFO L93 Difference]: Finished difference Result 7919 states and 13290 transitions. [2019-11-07 00:42:22,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 00:42:22,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2019-11-07 00:42:22,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:22,828 INFO L225 Difference]: With dead ends: 7919 [2019-11-07 00:42:22,829 INFO L226 Difference]: Without dead ends: 5648 [2019-11-07 00:42:22,848 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 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 00:42:22,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5648 states. [2019-11-07 00:42:23,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5648 to 5600. [2019-11-07 00:42:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5600 states. [2019-11-07 00:42:23,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 8993 transitions. [2019-11-07 00:42:23,179 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 8993 transitions. Word has length 133 [2019-11-07 00:42:23,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:23,179 INFO L462 AbstractCegarLoop]: Abstraction has 5600 states and 8993 transitions. [2019-11-07 00:42:23,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:42:23,179 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 8993 transitions. [2019-11-07 00:42:23,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-11-07 00:42:23,183 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:23,184 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:23,184 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:23,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:23,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2071050646, now seen corresponding path program 1 times [2019-11-07 00:42:23,184 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:23,185 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699442800] [2019-11-07 00:42:23,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:23,356 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 00:42:23,357 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699442800] [2019-11-07 00:42:23,357 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:23,357 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:42:23,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028565757] [2019-11-07 00:42:23,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:42:23,360 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:23,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:42:23,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:42:23,360 INFO L87 Difference]: Start difference. First operand 5600 states and 8993 transitions. Second operand 9 states.