java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:10:04,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:10:04,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:10:04,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:10:04,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:10:04,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:10:04,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:10:04,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:10:04,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:10:04,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:10:04,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:10:04,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:10:04,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:10:04,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:10:04,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:10:04,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:10:04,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:10:04,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:10:04,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:10:04,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:10:04,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:10:04,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:10:04,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:10:04,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:10:04,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:10:04,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:10:04,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:10:04,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:10:04,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:10:04,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:10:04,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:10:04,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:10:04,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:10:04,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:10:04,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:10:04,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:10:04,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:10:04,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:10:04,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:10:04,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:10:04,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:10:04,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:10:04,561 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:10:04,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:10:04,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:10:04,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:10:04,563 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:10:04,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:10:04,563 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:10:04,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:10:04,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:10:04,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:10:04,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:10:04,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:10:04,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:10:04,564 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:10:04,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:10:04,565 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:10:04,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:10:04,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:10:04,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:10:04,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:10:04,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:10:04,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:10:04,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:10:04,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:10:04,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:10:04,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:10:04,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:10:04,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:10:04,568 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:10:04,900 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:10:04,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:10:04,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:10:04,918 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:10:04,919 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:10:04,920 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product32.cil.c [2019-10-15 01:10:04,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/839b9132d/c5ef3944f50742d184171f9049dfaa44/FLAG7c4911be4 [2019-10-15 01:10:05,602 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:10:05,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product32.cil.c [2019-10-15 01:10:05,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/839b9132d/c5ef3944f50742d184171f9049dfaa44/FLAG7c4911be4 [2019-10-15 01:10:05,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/839b9132d/c5ef3944f50742d184171f9049dfaa44 [2019-10-15 01:10:05,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:10:05,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:10:05,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:10:05,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:10:05,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:10:05,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:10:05" (1/1) ... [2019-10-15 01:10:05,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3233fd50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:05, skipping insertion in model container [2019-10-15 01:10:05,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:10:05" (1/1) ... [2019-10-15 01:10:05,853 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:10:05,943 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:10:06,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:10:06,760 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:10:06,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:10:07,007 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:10:07,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:07 WrapperNode [2019-10-15 01:10:07,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:10:07,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:10:07,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:10:07,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:10:07,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:07" (1/1) ... [2019-10-15 01:10:07,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:07" (1/1) ... [2019-10-15 01:10:07,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:07" (1/1) ... [2019-10-15 01:10:07,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:07" (1/1) ... [2019-10-15 01:10:07,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:07" (1/1) ... [2019-10-15 01:10:07,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:07" (1/1) ... [2019-10-15 01:10:07,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:07" (1/1) ... [2019-10-15 01:10:07,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:10:07,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:10:07,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:10:07,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:10:07,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:10:07,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:10:07,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:10:07,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:10:07,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 01:10:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 01:10:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 01:10:07,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 01:10:07,360 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:10:07,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:10:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:10:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:10:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:10:07,362 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:10:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:10:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:10:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:10:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:10:07,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:10:07,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:10:07,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:10:07,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:10:07,369 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:10:07,369 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:10:07,369 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:10:07,369 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:10:07,370 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:10:07,370 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:10:07,370 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:10:07,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:10:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:10:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:10:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:10:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:10:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:10:07,372 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:10:07,372 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:10:07,372 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:10:07,372 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:10:07,372 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:10:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:10:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:10:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:10:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:10:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:10:07,374 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:10:07,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:10:07,374 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:10:07,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:10:07,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:10:07,374 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:10:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:10:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:10:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:10:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:10:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:10:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 01:10:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:10:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:10:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:10:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:10:07,377 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:10:07,377 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:10:07,377 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:10:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:10:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:10:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:10:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:10:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:10:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:10:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:10:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:10:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:10:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:10:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:10:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:10:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:10:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 01:10:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:10:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 01:10:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:10:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:10:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:10:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:10:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:10:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:10:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:10:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:10:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:10:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 01:10:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 01:10:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 01:10:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 01:10:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:10:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:10:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:10:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:10:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:10:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:10:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:10:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:10:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:10:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:10:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:10:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:10:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:10:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:10:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:10:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:10:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:10:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:10:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:10:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:10:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:10:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:10:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:10:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:10:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:10:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:10:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:10:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:10:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:10:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:10:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:10:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:10:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:10:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:10:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:10:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:10:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:10:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:10:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:10:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:10:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:10:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:10:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:10:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:10:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:10:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:10:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:10:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:10:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:10:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:10:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:10:07,398 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:10:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:10:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:10:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:10:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:10:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:10:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:10:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:10:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:10:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:10:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:10:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:10:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:10:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:10:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:10:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:10:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:10:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 01:10:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:10:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:10:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:10:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:10:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:10:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:10:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:10:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:10:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:10:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:10:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:10:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:10:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:10:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:10:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 01:10:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 01:10:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:10:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:10:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:10:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:10:09,746 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:10:09,746 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:10:09,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:09 BoogieIcfgContainer [2019-10-15 01:10:09,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:10:09,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:10:09,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:10:09,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:10:09,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:10:05" (1/3) ... [2019-10-15 01:10:09,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ec4698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:09, skipping insertion in model container [2019-10-15 01:10:09,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:07" (2/3) ... [2019-10-15 01:10:09,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ec4698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:09, skipping insertion in model container [2019-10-15 01:10:09,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:09" (3/3) ... [2019-10-15 01:10:09,760 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product32.cil.c [2019-10-15 01:10:09,771 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:10:09,782 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:10:09,795 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:10:09,841 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:10:09,841 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:10:09,842 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:10:09,842 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:10:09,842 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:10:09,842 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:10:09,842 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:10:09,842 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:10:09,890 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states. [2019-10-15 01:10:09,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-15 01:10:09,917 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:09,919 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:09,922 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:09,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:09,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2061998394, now seen corresponding path program 1 times [2019-10-15 01:10:09,942 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:09,942 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828683094] [2019-10-15 01:10:09,942 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:09,943 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:09,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:10,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828683094] [2019-10-15 01:10:10,622 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:10,622 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:10,623 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219632221] [2019-10-15 01:10:10,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:10,631 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:10,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:10,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:10,649 INFO L87 Difference]: Start difference. First operand 833 states. Second operand 4 states. [2019-10-15 01:10:10,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:10,872 INFO L93 Difference]: Finished difference Result 1315 states and 2101 transitions. [2019-10-15 01:10:10,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:10,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2019-10-15 01:10:10,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:10,911 INFO L225 Difference]: With dead ends: 1315 [2019-10-15 01:10:10,911 INFO L226 Difference]: Without dead ends: 666 [2019-10-15 01:10:10,925 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:10,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-15 01:10:11,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2019-10-15 01:10:11,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2019-10-15 01:10:11,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1052 transitions. [2019-10-15 01:10:11,069 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1052 transitions. Word has length 85 [2019-10-15 01:10:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:11,070 INFO L462 AbstractCegarLoop]: Abstraction has 666 states and 1052 transitions. [2019-10-15 01:10:11,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:11,070 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1052 transitions. [2019-10-15 01:10:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-15 01:10:11,076 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:11,076 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:11,076 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:11,077 INFO L82 PathProgramCache]: Analyzing trace with hash 190887692, now seen corresponding path program 1 times [2019-10-15 01:10:11,077 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:11,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121295183] [2019-10-15 01:10:11,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:11,078 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:11,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:11,277 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121295183] [2019-10-15 01:10:11,277 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:11,277 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:11,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58373630] [2019-10-15 01:10:11,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:11,285 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:11,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:11,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:11,290 INFO L87 Difference]: Start difference. First operand 666 states and 1052 transitions. Second operand 4 states. [2019-10-15 01:10:11,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:11,386 INFO L93 Difference]: Finished difference Result 1295 states and 2062 transitions. [2019-10-15 01:10:11,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:11,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-10-15 01:10:11,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:11,393 INFO L225 Difference]: With dead ends: 1295 [2019-10-15 01:10:11,393 INFO L226 Difference]: Without dead ends: 666 [2019-10-15 01:10:11,397 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:11,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-15 01:10:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2019-10-15 01:10:11,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2019-10-15 01:10:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1051 transitions. [2019-10-15 01:10:11,429 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1051 transitions. Word has length 88 [2019-10-15 01:10:11,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:11,429 INFO L462 AbstractCegarLoop]: Abstraction has 666 states and 1051 transitions. [2019-10-15 01:10:11,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:11,430 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1051 transitions. [2019-10-15 01:10:11,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-15 01:10:11,433 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:11,433 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:11,433 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:11,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:11,434 INFO L82 PathProgramCache]: Analyzing trace with hash 594585961, now seen corresponding path program 1 times [2019-10-15 01:10:11,434 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:11,434 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814413511] [2019-10-15 01:10:11,434 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:11,434 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:11,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:11,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814413511] [2019-10-15 01:10:11,674 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:11,674 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:11,674 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46883297] [2019-10-15 01:10:11,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:11,675 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:11,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:11,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:11,676 INFO L87 Difference]: Start difference. First operand 666 states and 1051 transitions. Second operand 4 states. [2019-10-15 01:10:11,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:11,760 INFO L93 Difference]: Finished difference Result 1295 states and 2061 transitions. [2019-10-15 01:10:11,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:11,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2019-10-15 01:10:11,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:11,774 INFO L225 Difference]: With dead ends: 1295 [2019-10-15 01:10:11,774 INFO L226 Difference]: Without dead ends: 666 [2019-10-15 01:10:11,783 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:11,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-15 01:10:11,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2019-10-15 01:10:11,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2019-10-15 01:10:11,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1050 transitions. [2019-10-15 01:10:11,828 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1050 transitions. Word has length 89 [2019-10-15 01:10:11,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:11,828 INFO L462 AbstractCegarLoop]: Abstraction has 666 states and 1050 transitions. [2019-10-15 01:10:11,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:11,829 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1050 transitions. [2019-10-15 01:10:11,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-15 01:10:11,830 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:11,831 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:11,831 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:11,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:11,832 INFO L82 PathProgramCache]: Analyzing trace with hash 305679912, now seen corresponding path program 1 times [2019-10-15 01:10:11,832 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:11,832 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221342587] [2019-10-15 01:10:11,832 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:11,832 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:11,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:11,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:11,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221342587] [2019-10-15 01:10:11,974 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:11,974 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:11,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348353298] [2019-10-15 01:10:11,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:11,975 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:11,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:11,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:11,976 INFO L87 Difference]: Start difference. First operand 666 states and 1050 transitions. Second operand 4 states. [2019-10-15 01:10:12,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:12,060 INFO L93 Difference]: Finished difference Result 1295 states and 2060 transitions. [2019-10-15 01:10:12,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:12,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-10-15 01:10:12,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:12,075 INFO L225 Difference]: With dead ends: 1295 [2019-10-15 01:10:12,075 INFO L226 Difference]: Without dead ends: 666 [2019-10-15 01:10:12,080 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:12,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-15 01:10:12,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2019-10-15 01:10:12,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2019-10-15 01:10:12,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1049 transitions. [2019-10-15 01:10:12,124 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1049 transitions. Word has length 90 [2019-10-15 01:10:12,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:12,125 INFO L462 AbstractCegarLoop]: Abstraction has 666 states and 1049 transitions. [2019-10-15 01:10:12,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:12,126 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1049 transitions. [2019-10-15 01:10:12,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-15 01:10:12,133 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:12,134 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:12,134 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:12,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:12,135 INFO L82 PathProgramCache]: Analyzing trace with hash 20876485, now seen corresponding path program 1 times [2019-10-15 01:10:12,135 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:12,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615570649] [2019-10-15 01:10:12,136 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:12,136 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:12,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:12,294 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615570649] [2019-10-15 01:10:12,294 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:12,295 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:12,295 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337915637] [2019-10-15 01:10:12,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:12,295 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:12,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:12,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:12,298 INFO L87 Difference]: Start difference. First operand 666 states and 1049 transitions. Second operand 4 states. [2019-10-15 01:10:12,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:12,363 INFO L93 Difference]: Finished difference Result 1295 states and 2059 transitions. [2019-10-15 01:10:12,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:12,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-10-15 01:10:12,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:12,371 INFO L225 Difference]: With dead ends: 1295 [2019-10-15 01:10:12,372 INFO L226 Difference]: Without dead ends: 666 [2019-10-15 01:10:12,376 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:12,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-15 01:10:12,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2019-10-15 01:10:12,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2019-10-15 01:10:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1048 transitions. [2019-10-15 01:10:12,403 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1048 transitions. Word has length 91 [2019-10-15 01:10:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:12,404 INFO L462 AbstractCegarLoop]: Abstraction has 666 states and 1048 transitions. [2019-10-15 01:10:12,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:12,406 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1048 transitions. [2019-10-15 01:10:12,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 01:10:12,409 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:12,409 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:12,410 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:12,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:12,410 INFO L82 PathProgramCache]: Analyzing trace with hash -136745660, now seen corresponding path program 1 times [2019-10-15 01:10:12,410 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:12,411 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602826838] [2019-10-15 01:10:12,411 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:12,411 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:12,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:12,720 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602826838] [2019-10-15 01:10:12,721 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:12,722 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:10:12,722 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272132615] [2019-10-15 01:10:12,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:10:12,724 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:12,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:10:12,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:10:12,724 INFO L87 Difference]: Start difference. First operand 666 states and 1048 transitions. Second operand 10 states. [2019-10-15 01:10:12,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:12,899 INFO L93 Difference]: Finished difference Result 1253 states and 1979 transitions. [2019-10-15 01:10:12,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:10:12,899 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2019-10-15 01:10:12,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:12,905 INFO L225 Difference]: With dead ends: 1253 [2019-10-15 01:10:12,905 INFO L226 Difference]: Without dead ends: 675 [2019-10-15 01:10:12,909 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 01:10:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2019-10-15 01:10:12,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 673. [2019-10-15 01:10:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2019-10-15 01:10:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1057 transitions. [2019-10-15 01:10:12,941 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1057 transitions. Word has length 92 [2019-10-15 01:10:12,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:12,942 INFO L462 AbstractCegarLoop]: Abstraction has 673 states and 1057 transitions. [2019-10-15 01:10:12,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:10:12,942 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1057 transitions. [2019-10-15 01:10:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 01:10:12,945 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:12,945 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:12,946 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:12,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:12,946 INFO L82 PathProgramCache]: Analyzing trace with hash -116408285, now seen corresponding path program 1 times [2019-10-15 01:10:12,946 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:12,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71321157] [2019-10-15 01:10:12,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:12,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:12,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:13,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71321157] [2019-10-15 01:10:13,062 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:13,062 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:13,062 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290522915] [2019-10-15 01:10:13,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:13,063 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:13,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:13,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:13,064 INFO L87 Difference]: Start difference. First operand 673 states and 1057 transitions. Second operand 4 states. [2019-10-15 01:10:13,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:13,141 INFO L93 Difference]: Finished difference Result 1301 states and 2065 transitions. [2019-10-15 01:10:13,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:13,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-10-15 01:10:13,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:13,148 INFO L225 Difference]: With dead ends: 1301 [2019-10-15 01:10:13,148 INFO L226 Difference]: Without dead ends: 660 [2019-10-15 01:10:13,152 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:13,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2019-10-15 01:10:13,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2019-10-15 01:10:13,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2019-10-15 01:10:13,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1034 transitions. [2019-10-15 01:10:13,180 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1034 transitions. Word has length 92 [2019-10-15 01:10:13,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:13,181 INFO L462 AbstractCegarLoop]: Abstraction has 660 states and 1034 transitions. [2019-10-15 01:10:13,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:13,181 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1034 transitions. [2019-10-15 01:10:13,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 01:10:13,185 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:13,185 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:13,186 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:13,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:13,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1615644955, now seen corresponding path program 1 times [2019-10-15 01:10:13,187 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:13,187 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322631172] [2019-10-15 01:10:13,187 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:13,188 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:13,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:13,321 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322631172] [2019-10-15 01:10:13,322 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:13,322 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:13,322 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074267392] [2019-10-15 01:10:13,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:13,323 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:13,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:13,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:13,324 INFO L87 Difference]: Start difference. First operand 660 states and 1034 transitions. Second operand 6 states. [2019-10-15 01:10:13,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:13,541 INFO L93 Difference]: Finished difference Result 1241 states and 1957 transitions. [2019-10-15 01:10:13,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:13,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-10-15 01:10:13,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:13,605 INFO L225 Difference]: With dead ends: 1241 [2019-10-15 01:10:13,605 INFO L226 Difference]: Without dead ends: 660 [2019-10-15 01:10:13,611 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 01:10:13,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2019-10-15 01:10:13,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2019-10-15 01:10:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2019-10-15 01:10:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1030 transitions. [2019-10-15 01:10:13,645 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1030 transitions. Word has length 93 [2019-10-15 01:10:13,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:13,648 INFO L462 AbstractCegarLoop]: Abstraction has 660 states and 1030 transitions. [2019-10-15 01:10:13,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:13,648 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1030 transitions. [2019-10-15 01:10:13,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:10:13,650 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:13,650 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:13,650 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:13,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:13,651 INFO L82 PathProgramCache]: Analyzing trace with hash -129454137, now seen corresponding path program 1 times [2019-10-15 01:10:13,651 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:13,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484184705] [2019-10-15 01:10:13,652 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:13,652 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:13,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:13,800 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484184705] [2019-10-15 01:10:13,801 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:13,801 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:13,802 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077491922] [2019-10-15 01:10:13,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:13,802 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:13,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:13,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:13,803 INFO L87 Difference]: Start difference. First operand 660 states and 1030 transitions. Second operand 6 states. [2019-10-15 01:10:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:14,006 INFO L93 Difference]: Finished difference Result 1241 states and 1953 transitions. [2019-10-15 01:10:14,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:14,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2019-10-15 01:10:14,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:14,012 INFO L225 Difference]: With dead ends: 1241 [2019-10-15 01:10:14,012 INFO L226 Difference]: Without dead ends: 660 [2019-10-15 01:10:14,016 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 01:10:14,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2019-10-15 01:10:14,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2019-10-15 01:10:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2019-10-15 01:10:14,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1026 transitions. [2019-10-15 01:10:14,042 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1026 transitions. Word has length 94 [2019-10-15 01:10:14,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:14,042 INFO L462 AbstractCegarLoop]: Abstraction has 660 states and 1026 transitions. [2019-10-15 01:10:14,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:14,043 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1026 transitions. [2019-10-15 01:10:14,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:10:14,044 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:14,044 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:14,044 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:14,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:14,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1340975830, now seen corresponding path program 1 times [2019-10-15 01:10:14,045 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:14,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988302996] [2019-10-15 01:10:14,046 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:14,046 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:14,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:14,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988302996] [2019-10-15 01:10:14,185 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:14,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:14,186 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042831189] [2019-10-15 01:10:14,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:14,186 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:14,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:14,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:14,187 INFO L87 Difference]: Start difference. First operand 660 states and 1026 transitions. Second operand 6 states. [2019-10-15 01:10:14,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:14,380 INFO L93 Difference]: Finished difference Result 1241 states and 1949 transitions. [2019-10-15 01:10:14,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:14,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-10-15 01:10:14,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:14,386 INFO L225 Difference]: With dead ends: 1241 [2019-10-15 01:10:14,387 INFO L226 Difference]: Without dead ends: 660 [2019-10-15 01:10:14,395 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 01:10:14,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2019-10-15 01:10:14,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2019-10-15 01:10:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2019-10-15 01:10:14,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1022 transitions. [2019-10-15 01:10:14,425 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1022 transitions. Word has length 95 [2019-10-15 01:10:14,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:14,426 INFO L462 AbstractCegarLoop]: Abstraction has 660 states and 1022 transitions. [2019-10-15 01:10:14,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:14,426 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1022 transitions. [2019-10-15 01:10:14,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:10:14,427 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:14,428 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:14,428 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:14,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:14,428 INFO L82 PathProgramCache]: Analyzing trace with hash -293121622, now seen corresponding path program 1 times [2019-10-15 01:10:14,429 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:14,429 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191175710] [2019-10-15 01:10:14,429 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:14,429 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:14,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:14,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191175710] [2019-10-15 01:10:14,568 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:14,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:14,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283282858] [2019-10-15 01:10:14,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:14,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:14,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:14,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:14,569 INFO L87 Difference]: Start difference. First operand 660 states and 1022 transitions. Second operand 7 states. [2019-10-15 01:10:14,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:14,702 INFO L93 Difference]: Finished difference Result 1241 states and 1945 transitions. [2019-10-15 01:10:14,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:14,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-15 01:10:14,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:14,709 INFO L225 Difference]: With dead ends: 1241 [2019-10-15 01:10:14,709 INFO L226 Difference]: Without dead ends: 639 [2019-10-15 01:10:14,713 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:14,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-10-15 01:10:14,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2019-10-15 01:10:14,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2019-10-15 01:10:14,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 988 transitions. [2019-10-15 01:10:14,742 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 988 transitions. Word has length 95 [2019-10-15 01:10:14,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:14,742 INFO L462 AbstractCegarLoop]: Abstraction has 639 states and 988 transitions. [2019-10-15 01:10:14,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:14,742 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 988 transitions. [2019-10-15 01:10:14,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:10:14,744 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:14,744 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:14,744 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:14,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:14,744 INFO L82 PathProgramCache]: Analyzing trace with hash -282239444, now seen corresponding path program 1 times [2019-10-15 01:10:14,745 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:14,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693517760] [2019-10-15 01:10:14,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:14,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:14,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:14,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693517760] [2019-10-15 01:10:14,898 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:14,898 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:14,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607230889] [2019-10-15 01:10:14,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:14,899 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:14,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:14,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:14,899 INFO L87 Difference]: Start difference. First operand 639 states and 988 transitions. Second operand 6 states. [2019-10-15 01:10:14,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:14,993 INFO L93 Difference]: Finished difference Result 1220 states and 1911 transitions. [2019-10-15 01:10:14,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:14,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-10-15 01:10:14,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:14,999 INFO L225 Difference]: With dead ends: 1220 [2019-10-15 01:10:14,999 INFO L226 Difference]: Without dead ends: 639 [2019-10-15 01:10:15,003 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 01:10:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-10-15 01:10:15,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2019-10-15 01:10:15,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2019-10-15 01:10:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 987 transitions. [2019-10-15 01:10:15,034 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 987 transitions. Word has length 96 [2019-10-15 01:10:15,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:15,036 INFO L462 AbstractCegarLoop]: Abstraction has 639 states and 987 transitions. [2019-10-15 01:10:15,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 987 transitions. [2019-10-15 01:10:15,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 01:10:15,038 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:15,038 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:15,038 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:15,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:15,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1859946641, now seen corresponding path program 1 times [2019-10-15 01:10:15,039 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:15,039 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367097067] [2019-10-15 01:10:15,039 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:15,039 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:15,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:15,160 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367097067] [2019-10-15 01:10:15,160 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:15,160 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:15,160 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085517392] [2019-10-15 01:10:15,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:15,161 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:15,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:15,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:15,162 INFO L87 Difference]: Start difference. First operand 639 states and 987 transitions. Second operand 6 states. [2019-10-15 01:10:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:15,256 INFO L93 Difference]: Finished difference Result 1220 states and 1910 transitions. [2019-10-15 01:10:15,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:15,257 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-10-15 01:10:15,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:15,264 INFO L225 Difference]: With dead ends: 1220 [2019-10-15 01:10:15,265 INFO L226 Difference]: Without dead ends: 639 [2019-10-15 01:10:15,270 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 01:10:15,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-10-15 01:10:15,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2019-10-15 01:10:15,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2019-10-15 01:10:15,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 986 transitions. [2019-10-15 01:10:15,299 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 986 transitions. Word has length 97 [2019-10-15 01:10:15,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:15,300 INFO L462 AbstractCegarLoop]: Abstraction has 639 states and 986 transitions. [2019-10-15 01:10:15,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:15,300 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 986 transitions. [2019-10-15 01:10:15,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 01:10:15,302 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:15,302 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:15,303 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:15,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:15,303 INFO L82 PathProgramCache]: Analyzing trace with hash 731941009, now seen corresponding path program 1 times [2019-10-15 01:10:15,303 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:15,304 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18559290] [2019-10-15 01:10:15,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:15,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:15,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:15,548 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18559290] [2019-10-15 01:10:15,548 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:15,548 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:10:15,549 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489707908] [2019-10-15 01:10:15,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:10:15,550 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:15,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:10:15,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:15,551 INFO L87 Difference]: Start difference. First operand 639 states and 986 transitions. Second operand 12 states. [2019-10-15 01:10:15,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:15,787 INFO L93 Difference]: Finished difference Result 1221 states and 1909 transitions. [2019-10-15 01:10:15,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:10:15,788 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2019-10-15 01:10:15,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:15,792 INFO L225 Difference]: With dead ends: 1221 [2019-10-15 01:10:15,793 INFO L226 Difference]: Without dead ends: 639 [2019-10-15 01:10:15,798 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:10:15,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-10-15 01:10:15,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2019-10-15 01:10:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2019-10-15 01:10:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 985 transitions. [2019-10-15 01:10:15,823 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 985 transitions. Word has length 98 [2019-10-15 01:10:15,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:15,823 INFO L462 AbstractCegarLoop]: Abstraction has 639 states and 985 transitions. [2019-10-15 01:10:15,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:10:15,824 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 985 transitions. [2019-10-15 01:10:15,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 01:10:15,825 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:15,825 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:15,826 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:15,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:15,826 INFO L82 PathProgramCache]: Analyzing trace with hash -2083976240, now seen corresponding path program 1 times [2019-10-15 01:10:15,826 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:15,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497257432] [2019-10-15 01:10:15,827 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:15,827 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:15,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:16,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:16,017 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497257432] [2019-10-15 01:10:16,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:16,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:16,018 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242485892] [2019-10-15 01:10:16,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:16,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:16,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:16,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:16,021 INFO L87 Difference]: Start difference. First operand 639 states and 985 transitions. Second operand 6 states. [2019-10-15 01:10:19,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:19,858 INFO L93 Difference]: Finished difference Result 1881 states and 2985 transitions. [2019-10-15 01:10:19,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:19,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-10-15 01:10:19,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:19,869 INFO L225 Difference]: With dead ends: 1881 [2019-10-15 01:10:19,869 INFO L226 Difference]: Without dead ends: 1308 [2019-10-15 01:10:19,873 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:19,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2019-10-15 01:10:19,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1181. [2019-10-15 01:10:19,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2019-10-15 01:10:19,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1867 transitions. [2019-10-15 01:10:19,932 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1867 transitions. Word has length 99 [2019-10-15 01:10:19,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:19,933 INFO L462 AbstractCegarLoop]: Abstraction has 1181 states and 1867 transitions. [2019-10-15 01:10:19,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:19,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1867 transitions. [2019-10-15 01:10:19,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-15 01:10:19,938 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:19,938 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:19,939 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:19,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:19,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1126166242, now seen corresponding path program 1 times [2019-10-15 01:10:19,939 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:19,940 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472406216] [2019-10-15 01:10:19,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:19,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:19,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:10:20,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472406216] [2019-10-15 01:10:20,184 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:20,184 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:10:20,184 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814513340] [2019-10-15 01:10:20,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:10:20,186 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:20,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:10:20,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:20,187 INFO L87 Difference]: Start difference. First operand 1181 states and 1867 transitions. Second operand 12 states. [2019-10-15 01:10:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:31,677 INFO L93 Difference]: Finished difference Result 3866 states and 6122 transitions. [2019-10-15 01:10:31,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 01:10:31,678 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 157 [2019-10-15 01:10:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:31,694 INFO L225 Difference]: With dead ends: 3866 [2019-10-15 01:10:31,694 INFO L226 Difference]: Without dead ends: 2751 [2019-10-15 01:10:31,702 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:10:31,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2019-10-15 01:10:31,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2693. [2019-10-15 01:10:31,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2693 states. [2019-10-15 01:10:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 4220 transitions. [2019-10-15 01:10:31,833 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 4220 transitions. Word has length 157 [2019-10-15 01:10:31,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:31,834 INFO L462 AbstractCegarLoop]: Abstraction has 2693 states and 4220 transitions. [2019-10-15 01:10:31,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:10:31,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 4220 transitions. [2019-10-15 01:10:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:10:31,840 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:31,840 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:31,840 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:31,841 INFO L82 PathProgramCache]: Analyzing trace with hash -525779042, now seen corresponding path program 1 times [2019-10-15 01:10:31,841 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:31,841 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006794594] [2019-10-15 01:10:31,841 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:31,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:31,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:32,033 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 01:10:32,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006794594] [2019-10-15 01:10:32,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018254336] [2019-10-15 01:10:32,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:32,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 3053 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:10:32,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:10:32,709 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:10:33,716 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:10:33,716 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 6] total 18 [2019-10-15 01:10:33,716 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101534146] [2019-10-15 01:10:33,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:33,717 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:33,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:33,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:10:33,718 INFO L87 Difference]: Start difference. First operand 2693 states and 4220 transitions. Second operand 5 states. [2019-10-15 01:10:34,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:34,715 INFO L93 Difference]: Finished difference Result 5384 states and 8665 transitions. [2019-10-15 01:10:34,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:34,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-10-15 01:10:34,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:34,742 INFO L225 Difference]: With dead ends: 5384 [2019-10-15 01:10:34,742 INFO L226 Difference]: Without dead ends: 2757 [2019-10-15 01:10:34,766 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 316 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:10:34,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2019-10-15 01:10:34,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2757. [2019-10-15 01:10:34,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2757 states. [2019-10-15 01:10:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 4322 transitions. [2019-10-15 01:10:34,908 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 4322 transitions. Word has length 158 [2019-10-15 01:10:34,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:34,908 INFO L462 AbstractCegarLoop]: Abstraction has 2757 states and 4322 transitions. [2019-10-15 01:10:34,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:34,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 4322 transitions. [2019-10-15 01:10:34,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-15 01:10:34,914 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:34,914 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:35,124 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:35,125 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:35,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:35,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1788724176, now seen corresponding path program 1 times [2019-10-15 01:10:35,126 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:35,126 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123846239] [2019-10-15 01:10:35,127 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:35,127 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:35,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:10:35,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123846239] [2019-10-15 01:10:35,334 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:35,334 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:35,334 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574263478] [2019-10-15 01:10:35,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:35,336 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:35,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:35,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:35,336 INFO L87 Difference]: Start difference. First operand 2757 states and 4322 transitions. Second operand 6 states. [2019-10-15 01:10:36,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:36,223 INFO L93 Difference]: Finished difference Result 5504 states and 8847 transitions. [2019-10-15 01:10:36,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:36,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2019-10-15 01:10:36,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:36,247 INFO L225 Difference]: With dead ends: 5504 [2019-10-15 01:10:36,247 INFO L226 Difference]: Without dead ends: 2797 [2019-10-15 01:10:36,261 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:10:36,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2019-10-15 01:10:36,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2797. [2019-10-15 01:10:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2797 states. [2019-10-15 01:10:36,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4352 transitions. [2019-10-15 01:10:36,386 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4352 transitions. Word has length 160 [2019-10-15 01:10:36,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:36,387 INFO L462 AbstractCegarLoop]: Abstraction has 2797 states and 4352 transitions. [2019-10-15 01:10:36,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:36,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4352 transitions. [2019-10-15 01:10:36,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-15 01:10:36,392 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:36,392 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:36,393 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:36,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:36,393 INFO L82 PathProgramCache]: Analyzing trace with hash -400317090, now seen corresponding path program 1 times [2019-10-15 01:10:36,393 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:36,393 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026956588] [2019-10-15 01:10:36,394 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:36,394 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:36,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:10:36,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026956588] [2019-10-15 01:10:36,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510056489] [2019-10-15 01:10:36,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:37,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 3057 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:10:37,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:10:37,418 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:10:38,387 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:10:38,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 6] total 18 [2019-10-15 01:10:38,388 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147776054] [2019-10-15 01:10:38,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:38,389 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:38,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:38,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:10:38,389 INFO L87 Difference]: Start difference. First operand 2797 states and 4352 transitions. Second operand 5 states.