java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec9_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:11:15,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:11:15,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:11:15,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:11:15,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:11:15,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:11:15,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:11:15,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:11:15,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:11:15,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:11:15,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:11:15,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:11:15,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:11:15,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:11:15,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:11:15,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:11:15,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:11:15,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:11:15,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:11:15,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:11:15,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:11:15,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:11:15,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:11:15,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:11:15,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:11:15,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:11:15,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:11:15,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:11:15,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:11:15,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:11:15,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:11:15,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:11:15,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:11:15,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:11:15,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:11:15,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:11:15,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:11:15,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:11:15,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:11:15,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:11:15,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:11:15,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:11:15,532 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:11:15,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:11:15,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:11:15,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:11:15,534 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:11:15,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:11:15,535 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:11:15,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:11:15,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:11:15,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:11:15,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:11:15,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:11:15,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:11:15,536 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:11:15,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:11:15,537 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:11:15,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:11:15,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:11:15,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:11:15,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:11:15,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:11:15,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:11:15,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:11:15,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:11:15,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:11:15,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:11:15,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:11:15,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:11:15,539 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:11:15,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:11:15,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:11:15,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:11:15,892 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:11:15,893 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:11:15,895 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product29.cil.c [2019-10-15 01:11:15,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd672fc6e/15a7bb8722684177baa842b5e5536e43/FLAG3fc034c65 [2019-10-15 01:11:16,696 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:11:16,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product29.cil.c [2019-10-15 01:11:16,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd672fc6e/15a7bb8722684177baa842b5e5536e43/FLAG3fc034c65 [2019-10-15 01:11:16,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd672fc6e/15a7bb8722684177baa842b5e5536e43 [2019-10-15 01:11:16,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:11:16,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:11:16,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:16,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:11:16,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:11:16,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:16" (1/1) ... [2019-10-15 01:11:16,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b72b8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:16, skipping insertion in model container [2019-10-15 01:11:16,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:16" (1/1) ... [2019-10-15 01:11:16,884 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:11:16,976 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:11:17,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:17,777 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:11:17,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:17,984 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:11:17,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17 WrapperNode [2019-10-15 01:11:17,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:17,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:11:17,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:11:17,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:11:17,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:17,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:18,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:18,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:18,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:18,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:18,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:18,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:11:18,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:11:18,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:11:18,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:11:18,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:11:18,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:11:18,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:11:18,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:18,264 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:11:18,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:11:18,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-15 01:11:18,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-15 01:11:18,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-15 01:11:18,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-15 01:11:18,266 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:11:18,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:11:18,266 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:11:18,266 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:11:18,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:11:18,267 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:11:18,267 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:11:18,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:11:18,267 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:11:18,268 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:11:18,268 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:11:18,268 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:11:18,269 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:11:18,269 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:11:18,269 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:11:18,269 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:11:18,269 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:11:18,270 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:11:18,270 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:11:18,270 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:11:18,270 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:11:18,270 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:11:18,271 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:11:18,271 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:11:18,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:11:18,271 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:11:18,272 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:11:18,272 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:11:18,272 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:11:18,272 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:11:18,272 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:11:18,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:18,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:18,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:18,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:11:18,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:11:18,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:11:18,274 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:11:18,274 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:11:18,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:11:18,275 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:11:18,275 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:11:18,275 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:11:18,276 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 01:11:18,276 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:11:18,276 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:11:18,276 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:11:18,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:11:18,277 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:11:18,277 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:11:18,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:11:18,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:11:18,278 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:11:18,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:11:18,278 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:11:18,278 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:11:18,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:11:18,279 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:11:18,279 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:11:18,279 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:18,279 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:11:18,280 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:11:18,280 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:11:18,280 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:11:18,280 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:11:18,280 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:11:18,281 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:11:18,281 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:11:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:11:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:11:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:11:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:11:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:11:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:11:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:11:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:11:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:11:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-15 01:11:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-15 01:11:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-15 01:11:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-15 01:11:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:11:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:11:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:11:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:11:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:11:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:11:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:11:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:11:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:11:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:11:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:11:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:11:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:11:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:11:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:11:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:11:18,287 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:11:18,287 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:11:18,287 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:11:18,287 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:11:18,288 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:11:18,288 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:11:18,288 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:11:18,288 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:11:18,289 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:11:18,289 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:11:18,289 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:11:18,289 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:11:18,290 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:11:18,290 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:11:18,290 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:11:18,290 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:11:18,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:11:18,291 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:11:18,291 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:11:18,291 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:11:18,291 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:11:18,291 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:11:18,292 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:11:18,292 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:11:18,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:18,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:11:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:11:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:11:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:11:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:11:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:11:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:11:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:11:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:11:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:11:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:11:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:11:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:11:18,296 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:11:18,296 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:11:18,296 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:11:18,296 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:11:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:11:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 01:11:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:11:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:11:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:11:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:11:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:11:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:11:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:11:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:11:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:11:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:11:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:11:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:11:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:11:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:11:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:11:20,835 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:11:20,836 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:11:20,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:20 BoogieIcfgContainer [2019-10-15 01:11:20,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:11:20,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:11:20,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:11:20,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:11:20,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:11:16" (1/3) ... [2019-10-15 01:11:20,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b2e5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:20, skipping insertion in model container [2019-10-15 01:11:20,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (2/3) ... [2019-10-15 01:11:20,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b2e5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:20, skipping insertion in model container [2019-10-15 01:11:20,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:20" (3/3) ... [2019-10-15 01:11:20,848 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product29.cil.c [2019-10-15 01:11:20,859 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:11:20,871 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:11:20,883 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:11:20,923 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:11:20,923 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:11:20,923 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:11:20,924 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:11:20,924 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:11:20,924 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:11:20,924 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:11:20,924 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:11:20,961 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states. [2019-10-15 01:11:20,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 01:11:20,989 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:20,990 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:20,993 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:20,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:20,999 INFO L82 PathProgramCache]: Analyzing trace with hash 998764860, now seen corresponding path program 1 times [2019-10-15 01:11:21,009 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:21,010 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119491363] [2019-10-15 01:11:21,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:21,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:21,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:21,709 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119491363] [2019-10-15 01:11:21,710 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:21,710 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:21,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589002986] [2019-10-15 01:11:21,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:21,718 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:21,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:21,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:21,737 INFO L87 Difference]: Start difference. First operand 780 states. Second operand 4 states. [2019-10-15 01:11:21,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:21,935 INFO L93 Difference]: Finished difference Result 1223 states and 1973 transitions. [2019-10-15 01:11:21,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:21,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-15 01:11:21,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:21,973 INFO L225 Difference]: With dead ends: 1223 [2019-10-15 01:11:21,973 INFO L226 Difference]: Without dead ends: 620 [2019-10-15 01:11:21,987 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:22,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-15 01:11:22,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-15 01:11:22,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 01:11:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 988 transitions. [2019-10-15 01:11:22,122 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 988 transitions. Word has length 126 [2019-10-15 01:11:22,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:22,123 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 988 transitions. [2019-10-15 01:11:22,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:22,123 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 988 transitions. [2019-10-15 01:11:22,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-15 01:11:22,135 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:22,136 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:22,136 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:22,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:22,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1436115491, now seen corresponding path program 1 times [2019-10-15 01:11:22,137 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:22,137 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982419901] [2019-10-15 01:11:22,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:22,383 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982419901] [2019-10-15 01:11:22,383 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:22,383 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:22,384 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298787386] [2019-10-15 01:11:22,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:22,397 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:22,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:22,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:22,401 INFO L87 Difference]: Start difference. First operand 620 states and 988 transitions. Second operand 4 states. [2019-10-15 01:11:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:22,488 INFO L93 Difference]: Finished difference Result 1203 states and 1934 transitions. [2019-10-15 01:11:22,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:22,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-10-15 01:11:22,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:22,495 INFO L225 Difference]: With dead ends: 1203 [2019-10-15 01:11:22,495 INFO L226 Difference]: Without dead ends: 620 [2019-10-15 01:11:22,499 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:22,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-15 01:11:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-15 01:11:22,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 01:11:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 987 transitions. [2019-10-15 01:11:22,584 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 987 transitions. Word has length 129 [2019-10-15 01:11:22,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:22,584 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 987 transitions. [2019-10-15 01:11:22,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:22,584 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 987 transitions. [2019-10-15 01:11:22,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-15 01:11:22,593 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:22,593 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:22,594 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:22,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:22,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1964351121, now seen corresponding path program 1 times [2019-10-15 01:11:22,594 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:22,595 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793021449] [2019-10-15 01:11:22,595 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,595 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:22,810 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793021449] [2019-10-15 01:11:22,810 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:22,810 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:22,811 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333118203] [2019-10-15 01:11:22,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:22,814 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:22,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:22,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:22,814 INFO L87 Difference]: Start difference. First operand 620 states and 987 transitions. Second operand 4 states. [2019-10-15 01:11:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:22,903 INFO L93 Difference]: Finished difference Result 1203 states and 1933 transitions. [2019-10-15 01:11:22,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:22,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2019-10-15 01:11:22,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:22,911 INFO L225 Difference]: With dead ends: 1203 [2019-10-15 01:11:22,911 INFO L226 Difference]: Without dead ends: 620 [2019-10-15 01:11:22,915 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:22,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-15 01:11:22,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-15 01:11:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 01:11:22,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 986 transitions. [2019-10-15 01:11:22,958 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 986 transitions. Word has length 130 [2019-10-15 01:11:22,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:22,961 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 986 transitions. [2019-10-15 01:11:22,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:22,961 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 986 transitions. [2019-10-15 01:11:22,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 01:11:22,973 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:22,974 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:22,974 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:22,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:22,975 INFO L82 PathProgramCache]: Analyzing trace with hash 2042355745, now seen corresponding path program 1 times [2019-10-15 01:11:22,975 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:22,975 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790521466] [2019-10-15 01:11:22,975 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,975 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:23,150 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790521466] [2019-10-15 01:11:23,150 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:23,150 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:23,151 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871740196] [2019-10-15 01:11:23,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:23,152 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:23,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:23,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:23,153 INFO L87 Difference]: Start difference. First operand 620 states and 986 transitions. Second operand 4 states. [2019-10-15 01:11:23,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:23,238 INFO L93 Difference]: Finished difference Result 1203 states and 1932 transitions. [2019-10-15 01:11:23,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:23,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2019-10-15 01:11:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:23,256 INFO L225 Difference]: With dead ends: 1203 [2019-10-15 01:11:23,256 INFO L226 Difference]: Without dead ends: 620 [2019-10-15 01:11:23,264 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-15 01:11:23,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-15 01:11:23,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 01:11:23,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 985 transitions. [2019-10-15 01:11:23,309 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 985 transitions. Word has length 131 [2019-10-15 01:11:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:23,312 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 985 transitions. [2019-10-15 01:11:23,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 985 transitions. [2019-10-15 01:11:23,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 01:11:23,321 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:23,322 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:23,322 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:23,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:23,323 INFO L82 PathProgramCache]: Analyzing trace with hash 603391923, now seen corresponding path program 1 times [2019-10-15 01:11:23,323 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:23,325 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625080423] [2019-10-15 01:11:23,325 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,325 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:23,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625080423] [2019-10-15 01:11:23,581 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:23,581 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:23,581 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516802366] [2019-10-15 01:11:23,582 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:23,582 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:23,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:23,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:23,583 INFO L87 Difference]: Start difference. First operand 620 states and 985 transitions. Second operand 4 states. [2019-10-15 01:11:23,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:23,656 INFO L93 Difference]: Finished difference Result 1203 states and 1931 transitions. [2019-10-15 01:11:23,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:23,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2019-10-15 01:11:23,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:23,669 INFO L225 Difference]: With dead ends: 1203 [2019-10-15 01:11:23,670 INFO L226 Difference]: Without dead ends: 620 [2019-10-15 01:11:23,673 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:23,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-15 01:11:23,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-15 01:11:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 01:11:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 984 transitions. [2019-10-15 01:11:23,703 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 984 transitions. Word has length 132 [2019-10-15 01:11:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:23,704 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 984 transitions. [2019-10-15 01:11:23,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:23,704 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 984 transitions. [2019-10-15 01:11:23,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 01:11:23,710 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:23,710 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:23,711 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:23,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:23,712 INFO L82 PathProgramCache]: Analyzing trace with hash 2147328613, now seen corresponding path program 1 times [2019-10-15 01:11:23,713 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:23,713 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640409915] [2019-10-15 01:11:23,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:23,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640409915] [2019-10-15 01:11:23,926 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:23,926 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:11:23,926 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000410038] [2019-10-15 01:11:23,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:11:23,927 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:23,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:11:23,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:23,928 INFO L87 Difference]: Start difference. First operand 620 states and 984 transitions. Second operand 10 states. [2019-10-15 01:11:24,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:24,095 INFO L93 Difference]: Finished difference Result 1161 states and 1851 transitions. [2019-10-15 01:11:24,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:11:24,096 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 133 [2019-10-15 01:11:24,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:24,102 INFO L225 Difference]: With dead ends: 1161 [2019-10-15 01:11:24,102 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:11:24,109 INFO L600 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 [2019-10-15 01:11:24,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:11:24,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 627. [2019-10-15 01:11:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2019-10-15 01:11:24,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 993 transitions. [2019-10-15 01:11:24,148 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 993 transitions. Word has length 133 [2019-10-15 01:11:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:24,151 INFO L462 AbstractCegarLoop]: Abstraction has 627 states and 993 transitions. [2019-10-15 01:11:24,151 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:11:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 993 transitions. [2019-10-15 01:11:24,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 01:11:24,160 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:24,160 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:24,161 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:24,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:24,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1347103130, now seen corresponding path program 1 times [2019-10-15 01:11:24,161 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:24,162 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872210537] [2019-10-15 01:11:24,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:24,350 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872210537] [2019-10-15 01:11:24,350 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:24,350 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:24,351 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136202177] [2019-10-15 01:11:24,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:24,351 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:24,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:24,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:24,352 INFO L87 Difference]: Start difference. First operand 627 states and 993 transitions. Second operand 4 states. [2019-10-15 01:11:24,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:24,414 INFO L93 Difference]: Finished difference Result 1209 states and 1937 transitions. [2019-10-15 01:11:24,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:24,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2019-10-15 01:11:24,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:24,421 INFO L225 Difference]: With dead ends: 1209 [2019-10-15 01:11:24,421 INFO L226 Difference]: Without dead ends: 614 [2019-10-15 01:11:24,424 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-15 01:11:24,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-10-15 01:11:24,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-15 01:11:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 970 transitions. [2019-10-15 01:11:24,449 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 970 transitions. Word has length 133 [2019-10-15 01:11:24,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:24,449 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 970 transitions. [2019-10-15 01:11:24,449 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:24,449 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 970 transitions. [2019-10-15 01:11:24,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-15 01:11:24,454 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:24,454 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:24,455 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:24,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:24,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1290451205, now seen corresponding path program 1 times [2019-10-15 01:11:24,455 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:24,456 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642268020] [2019-10-15 01:11:24,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:24,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642268020] [2019-10-15 01:11:24,611 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:24,611 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:24,611 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698702117] [2019-10-15 01:11:24,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:24,612 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:24,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:24,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:24,613 INFO L87 Difference]: Start difference. First operand 614 states and 970 transitions. Second operand 6 states. [2019-10-15 01:11:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:24,864 INFO L93 Difference]: Finished difference Result 1149 states and 1829 transitions. [2019-10-15 01:11:24,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:24,865 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2019-10-15 01:11:24,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:24,872 INFO L225 Difference]: With dead ends: 1149 [2019-10-15 01:11:24,873 INFO L226 Difference]: Without dead ends: 614 [2019-10-15 01:11:24,877 INFO L600 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 [2019-10-15 01:11:24,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-15 01:11:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-10-15 01:11:24,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-15 01:11:24,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 966 transitions. [2019-10-15 01:11:24,908 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 966 transitions. Word has length 134 [2019-10-15 01:11:24,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:24,909 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 966 transitions. [2019-10-15 01:11:24,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:24,909 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 966 transitions. [2019-10-15 01:11:24,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 01:11:24,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:24,914 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:24,914 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:24,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:24,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1379251042, now seen corresponding path program 1 times [2019-10-15 01:11:24,918 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:24,918 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512255314] [2019-10-15 01:11:24,919 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,919 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:25,094 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512255314] [2019-10-15 01:11:25,094 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:25,095 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:25,095 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315680407] [2019-10-15 01:11:25,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:25,096 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:25,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:25,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:25,098 INFO L87 Difference]: Start difference. First operand 614 states and 966 transitions. Second operand 6 states. [2019-10-15 01:11:25,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:25,392 INFO L93 Difference]: Finished difference Result 1149 states and 1825 transitions. [2019-10-15 01:11:25,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:25,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2019-10-15 01:11:25,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:25,397 INFO L225 Difference]: With dead ends: 1149 [2019-10-15 01:11:25,398 INFO L226 Difference]: Without dead ends: 614 [2019-10-15 01:11:25,401 INFO L600 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 [2019-10-15 01:11:25,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-15 01:11:25,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-10-15 01:11:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-15 01:11:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 962 transitions. [2019-10-15 01:11:25,426 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 962 transitions. Word has length 135 [2019-10-15 01:11:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:25,426 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 962 transitions. [2019-10-15 01:11:25,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:25,426 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 962 transitions. [2019-10-15 01:11:25,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-15 01:11:25,431 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:25,432 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:25,432 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:25,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:25,433 INFO L82 PathProgramCache]: Analyzing trace with hash 234769472, now seen corresponding path program 1 times [2019-10-15 01:11:25,433 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:25,433 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384124405] [2019-10-15 01:11:25,433 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,433 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:25,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:25,575 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384124405] [2019-10-15 01:11:25,575 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:25,575 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:25,576 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309621540] [2019-10-15 01:11:25,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:25,576 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:25,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:25,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:25,577 INFO L87 Difference]: Start difference. First operand 614 states and 962 transitions. Second operand 6 states. [2019-10-15 01:11:25,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:25,759 INFO L93 Difference]: Finished difference Result 1149 states and 1821 transitions. [2019-10-15 01:11:25,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:25,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2019-10-15 01:11:25,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:25,767 INFO L225 Difference]: With dead ends: 1149 [2019-10-15 01:11:25,768 INFO L226 Difference]: Without dead ends: 614 [2019-10-15 01:11:25,771 INFO L600 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 [2019-10-15 01:11:25,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-15 01:11:25,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2019-10-15 01:11:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-15 01:11:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 958 transitions. [2019-10-15 01:11:25,791 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 958 transitions. Word has length 136 [2019-10-15 01:11:25,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:25,791 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 958 transitions. [2019-10-15 01:11:25,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 958 transitions. [2019-10-15 01:11:25,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-15 01:11:25,796 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:25,796 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:25,796 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:25,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:25,797 INFO L82 PathProgramCache]: Analyzing trace with hash -185638976, now seen corresponding path program 1 times [2019-10-15 01:11:25,797 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:25,797 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203258033] [2019-10-15 01:11:25,797 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,797 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:25,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203258033] [2019-10-15 01:11:25,929 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:25,929 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:25,929 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659160965] [2019-10-15 01:11:25,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:25,930 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:25,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:25,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:25,931 INFO L87 Difference]: Start difference. First operand 614 states and 958 transitions. Second operand 7 states. [2019-10-15 01:11:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:26,037 INFO L93 Difference]: Finished difference Result 1149 states and 1817 transitions. [2019-10-15 01:11:26,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:26,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2019-10-15 01:11:26,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:26,045 INFO L225 Difference]: With dead ends: 1149 [2019-10-15 01:11:26,045 INFO L226 Difference]: Without dead ends: 593 [2019-10-15 01:11:26,049 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:26,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-10-15 01:11:26,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2019-10-15 01:11:26,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2019-10-15 01:11:26,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 924 transitions. [2019-10-15 01:11:26,074 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 924 transitions. Word has length 136 [2019-10-15 01:11:26,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:26,075 INFO L462 AbstractCegarLoop]: Abstraction has 593 states and 924 transitions. [2019-10-15 01:11:26,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:26,075 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 924 transitions. [2019-10-15 01:11:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-15 01:11:26,081 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:26,082 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:26,082 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:26,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:26,083 INFO L82 PathProgramCache]: Analyzing trace with hash -486730051, now seen corresponding path program 1 times [2019-10-15 01:11:26,083 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:26,083 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460707506] [2019-10-15 01:11:26,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:26,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:26,254 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460707506] [2019-10-15 01:11:26,254 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:26,254 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:26,254 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514996474] [2019-10-15 01:11:26,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:26,255 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:26,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:26,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:26,256 INFO L87 Difference]: Start difference. First operand 593 states and 924 transitions. Second operand 6 states. [2019-10-15 01:11:26,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:26,354 INFO L93 Difference]: Finished difference Result 1128 states and 1783 transitions. [2019-10-15 01:11:26,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:26,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2019-10-15 01:11:26,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:26,359 INFO L225 Difference]: With dead ends: 1128 [2019-10-15 01:11:26,359 INFO L226 Difference]: Without dead ends: 593 [2019-10-15 01:11:26,363 INFO L600 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 [2019-10-15 01:11:26,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-10-15 01:11:26,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2019-10-15 01:11:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2019-10-15 01:11:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 923 transitions. [2019-10-15 01:11:26,382 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 923 transitions. Word has length 137 [2019-10-15 01:11:26,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:26,382 INFO L462 AbstractCegarLoop]: Abstraction has 593 states and 923 transitions. [2019-10-15 01:11:26,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:26,383 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 923 transitions. [2019-10-15 01:11:26,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 01:11:26,387 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:26,387 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:26,388 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:26,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:26,388 INFO L82 PathProgramCache]: Analyzing trace with hash -980688005, now seen corresponding path program 1 times [2019-10-15 01:11:26,388 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:26,389 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670830574] [2019-10-15 01:11:26,389 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,389 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:26,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670830574] [2019-10-15 01:11:26,521 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:26,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:26,521 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022703545] [2019-10-15 01:11:26,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:26,522 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:26,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:26,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:26,523 INFO L87 Difference]: Start difference. First operand 593 states and 923 transitions. Second operand 6 states. [2019-10-15 01:11:26,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:26,617 INFO L93 Difference]: Finished difference Result 1128 states and 1782 transitions. [2019-10-15 01:11:26,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:26,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2019-10-15 01:11:26,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:26,622 INFO L225 Difference]: With dead ends: 1128 [2019-10-15 01:11:26,623 INFO L226 Difference]: Without dead ends: 593 [2019-10-15 01:11:26,626 INFO L600 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 [2019-10-15 01:11:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-10-15 01:11:26,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2019-10-15 01:11:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2019-10-15 01:11:26,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 922 transitions. [2019-10-15 01:11:26,647 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 922 transitions. Word has length 138 [2019-10-15 01:11:26,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:26,647 INFO L462 AbstractCegarLoop]: Abstraction has 593 states and 922 transitions. [2019-10-15 01:11:26,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:26,647 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 922 transitions. [2019-10-15 01:11:26,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-15 01:11:26,652 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:26,652 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:26,653 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:26,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:26,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1284175384, now seen corresponding path program 1 times [2019-10-15 01:11:26,653 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:26,653 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92753199] [2019-10-15 01:11:26,654 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,654 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:26,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92753199] [2019-10-15 01:11:26,846 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:26,846 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:11:26,846 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651335884] [2019-10-15 01:11:26,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:11:26,847 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:26,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:11:26,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:11:26,848 INFO L87 Difference]: Start difference. First operand 593 states and 922 transitions. Second operand 12 states. [2019-10-15 01:11:27,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:27,039 INFO L93 Difference]: Finished difference Result 1129 states and 1781 transitions. [2019-10-15 01:11:27,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:11:27,039 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2019-10-15 01:11:27,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:27,044 INFO L225 Difference]: With dead ends: 1129 [2019-10-15 01:11:27,044 INFO L226 Difference]: Without dead ends: 593 [2019-10-15 01:11:27,048 INFO L600 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 [2019-10-15 01:11:27,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-10-15 01:11:27,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2019-10-15 01:11:27,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2019-10-15 01:11:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 921 transitions. [2019-10-15 01:11:27,068 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 921 transitions. Word has length 139 [2019-10-15 01:11:27,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:27,069 INFO L462 AbstractCegarLoop]: Abstraction has 593 states and 921 transitions. [2019-10-15 01:11:27,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:11:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 921 transitions. [2019-10-15 01:11:27,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 01:11:27,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:27,074 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:27,074 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:27,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:27,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1594513904, now seen corresponding path program 1 times [2019-10-15 01:11:27,075 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:27,076 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133550951] [2019-10-15 01:11:27,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:27,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:27,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:27,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133550951] [2019-10-15 01:11:27,288 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:27,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:27,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314005554] [2019-10-15 01:11:27,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:27,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:27,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:27,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:27,290 INFO L87 Difference]: Start difference. First operand 593 states and 921 transitions. Second operand 6 states. [2019-10-15 01:11:31,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:31,648 INFO L93 Difference]: Finished difference Result 1777 states and 2884 transitions. [2019-10-15 01:11:31,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:11:31,649 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-10-15 01:11:31,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:31,663 INFO L225 Difference]: With dead ends: 1777 [2019-10-15 01:11:31,663 INFO L226 Difference]: Without dead ends: 1250 [2019-10-15 01:11:31,669 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:31,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2019-10-15 01:11:31,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1167. [2019-10-15 01:11:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2019-10-15 01:11:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1860 transitions. [2019-10-15 01:11:31,744 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1860 transitions. Word has length 140 [2019-10-15 01:11:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:31,744 INFO L462 AbstractCegarLoop]: Abstraction has 1167 states and 1860 transitions. [2019-10-15 01:11:31,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1860 transitions. [2019-10-15 01:11:31,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 01:11:31,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:31,749 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:31,749 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:31,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:31,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1854401282, now seen corresponding path program 1 times [2019-10-15 01:11:31,750 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:31,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394700289] [2019-10-15 01:11:31,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:31,751 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:31,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:31,912 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394700289] [2019-10-15 01:11:31,914 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:31,915 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:31,915 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213762358] [2019-10-15 01:11:31,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:31,916 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:31,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:31,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:31,916 INFO L87 Difference]: Start difference. First operand 1167 states and 1860 transitions. Second operand 6 states. [2019-10-15 01:11:36,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:36,631 INFO L93 Difference]: Finished difference Result 3724 states and 6160 transitions. [2019-10-15 01:11:36,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:11:36,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2019-10-15 01:11:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:36,656 INFO L225 Difference]: With dead ends: 3724 [2019-10-15 01:11:36,656 INFO L226 Difference]: Without dead ends: 2624 [2019-10-15 01:11:36,663 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2019-10-15 01:11:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2428. [2019-10-15 01:11:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2428 states. [2019-10-15 01:11:36,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3951 transitions. [2019-10-15 01:11:36,813 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3951 transitions. Word has length 141 [2019-10-15 01:11:36,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:36,814 INFO L462 AbstractCegarLoop]: Abstraction has 2428 states and 3951 transitions. [2019-10-15 01:11:36,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:36,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3951 transitions. [2019-10-15 01:11:36,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-15 01:11:36,819 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:36,819 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:36,819 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:36,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:36,820 INFO L82 PathProgramCache]: Analyzing trace with hash -2086190540, now seen corresponding path program 1 times [2019-10-15 01:11:36,820 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:36,820 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375880204] [2019-10-15 01:11:36,820 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:36,820 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:36,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:37,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375880204] [2019-10-15 01:11:37,011 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:37,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:37,012 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265098849] [2019-10-15 01:11:37,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:37,013 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:37,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:37,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:37,013 INFO L87 Difference]: Start difference. First operand 2428 states and 3951 transitions. Second operand 6 states. [2019-10-15 01:11:41,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:41,689 INFO L93 Difference]: Finished difference Result 8163 states and 13810 transitions. [2019-10-15 01:11:41,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:11:41,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2019-10-15 01:11:41,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:41,761 INFO L225 Difference]: With dead ends: 8163 [2019-10-15 01:11:41,761 INFO L226 Difference]: Without dead ends: 5804 [2019-10-15 01:11:41,787 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5804 states. [2019-10-15 01:11:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5804 to 5283. [2019-10-15 01:11:42,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5283 states. [2019-10-15 01:11:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5283 states to 5283 states and 8798 transitions. [2019-10-15 01:11:42,273 INFO L78 Accepts]: Start accepts. Automaton has 5283 states and 8798 transitions. Word has length 142 [2019-10-15 01:11:42,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:42,274 INFO L462 AbstractCegarLoop]: Abstraction has 5283 states and 8798 transitions. [2019-10-15 01:11:42,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:42,274 INFO L276 IsEmpty]: Start isEmpty. Operand 5283 states and 8798 transitions. [2019-10-15 01:11:42,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 01:11:42,282 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:42,283 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:42,283 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:42,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:42,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1197315910, now seen corresponding path program 1 times [2019-10-15 01:11:42,284 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:42,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983448030] [2019-10-15 01:11:42,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:42,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:42,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:11:42,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983448030] [2019-10-15 01:11:42,522 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:42,522 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:42,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718832440] [2019-10-15 01:11:42,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:42,524 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:42,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:42,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:42,524 INFO L87 Difference]: Start difference. First operand 5283 states and 8798 transitions. Second operand 6 states.