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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:10:57,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:10:57,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:10:57,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:10:57,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:10:57,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:10:57,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:10:57,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:10:57,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:10:57,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:10:57,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:10:57,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:10:57,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:10:57,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:10:57,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:10:57,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:10:57,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:10:57,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:10:57,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:10:57,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:10:57,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:10:57,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:10:57,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:10:57,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:10:57,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:10:57,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:10:57,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:10:57,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:10:57,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:10:57,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:10:57,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:10:57,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:10:57,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:10:57,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:10:57,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:10:57,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:10:57,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:10:57,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:10:57,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:10:57,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:10:57,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:10:57,492 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 [2019-10-13 21:10:57,526 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:10:57,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:10:57,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:10:57,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:10:57,529 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:10:57,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:10:57,530 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:10:57,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:10:57,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:10:57,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:10:57,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:10:57,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:10:57,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:10:57,531 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:10:57,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:10:57,531 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:10:57,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:10:57,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:10:57,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:10:57,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:10:57,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:10:57,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:10:57,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:10:57,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:10:57,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:10:57,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:10:57,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:10:57,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:10:57,534 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 [2019-10-13 21:10:57,843 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:10:57,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:10:57,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:10:57,867 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:10:57,868 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:10:57,868 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c [2019-10-13 21:10:57,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64d1490af/96f85d92540d4ef09bda72a31bc5a6ad/FLAG73951131b [2019-10-13 21:10:58,675 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:10:58,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c [2019-10-13 21:10:58,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64d1490af/96f85d92540d4ef09bda72a31bc5a6ad/FLAG73951131b [2019-10-13 21:10:58,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64d1490af/96f85d92540d4ef09bda72a31bc5a6ad [2019-10-13 21:10:58,788 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:10:58,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:10:58,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:10:58,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:10:58,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:10:58,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:10:58" (1/1) ... [2019-10-13 21:10:58,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a8eca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:58, skipping insertion in model container [2019-10-13 21:10:58,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:10:58" (1/1) ... [2019-10-13 21:10:58,808 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:10:58,902 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:10:59,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:10:59,729 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:11:00,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:11:00,089 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:11:00,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:00 WrapperNode [2019-10-13 21:11:00,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:11:00,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:11:00,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:11:00,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:11:00,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:00" (1/1) ... [2019-10-13 21:11:00,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:00" (1/1) ... [2019-10-13 21:11:00,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:00" (1/1) ... [2019-10-13 21:11:00,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:00" (1/1) ... [2019-10-13 21:11:00,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:00" (1/1) ... [2019-10-13 21:11:00,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:00" (1/1) ... [2019-10-13 21:11:00,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:00" (1/1) ... [2019-10-13 21:11:00,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:11:00,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:11:00,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:11:00,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:11:00,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:00" (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 [2019-10-13 21:11:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:11:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:11:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:11:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:11:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:11:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:11:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 21:11:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:11:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 21:11:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 21:11:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:11:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:11:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:11:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:11:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:11:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:11:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:11:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:11:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:11:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:11:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:11:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:11:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:11:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:11:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:11:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:11:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:11:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:11:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 21:11:00,438 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:11:00,438 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 21:11:00,438 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:11:00,438 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:11:00,438 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 21:11:00,439 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 21:11:00,439 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:11:00,439 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:11:00,439 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:11:00,439 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:11:00,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:11:00,440 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:11:00,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:11:00,440 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:11:00,440 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:11:00,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:11:00,441 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:11:00,441 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:11:00,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:11:00,441 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:11:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:11:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:11:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:11:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:11:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:11:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:11:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:11:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:11:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:11:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:11:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:11:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:11:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:11:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:11:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:11:00,445 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:11:00,445 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:11:00,445 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:11:00,445 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:11:00,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:11:00,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:11:00,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:11:00,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:11:00,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:11:00,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:11:00,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:11:00,447 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:11:00,447 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:11:00,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 21:11:00,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 21:11:00,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 21:11:00,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 21:11:00,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:11:00,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:11:00,448 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:11:00,449 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:11:00,449 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:11:00,449 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:11:00,449 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:11:00,449 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:11:00,449 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:11:00,450 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:11:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:11:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:11:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:11:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:11:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:11:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:11:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:11:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:11:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:11:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:11:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:11:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:11:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:11:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 21:11:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 21:11:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 21:11:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 21:11:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 21:11:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:11:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 21:11:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:11:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:11:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:11:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:11:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:11:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:11:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:11:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:11:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:11:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:11:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:11:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 21:11:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 21:11:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 21:11:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:11:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:11:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:11:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:11:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:11:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:11:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:11:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:11:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:11:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:11:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:11:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:11:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:11:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:11:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:11:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:11:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:11:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:11:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:11:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:11:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:11:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:11:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:11:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:11:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:11:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:11:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:11:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 21:11:00,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 21:11:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:11:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:11:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:11:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:11:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:11:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:11:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:11:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:11:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:11:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:11:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:11:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:11:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:11:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:11:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:11:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:11:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:11:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:11:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:11:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:11:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:11:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:11:00,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:11:03,398 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:11:03,399 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:11:03,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:11:03 BoogieIcfgContainer [2019-10-13 21:11:03,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:11:03,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:11:03,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:11:03,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:11:03,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:10:58" (1/3) ... [2019-10-13 21:11:03,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9c760d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:11:03, skipping insertion in model container [2019-10-13 21:11:03,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:00" (2/3) ... [2019-10-13 21:11:03,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9c760d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:11:03, skipping insertion in model container [2019-10-13 21:11:03,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:11:03" (3/3) ... [2019-10-13 21:11:03,412 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product28.cil.c [2019-10-13 21:11:03,422 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:11:03,434 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:11:03,445 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:11:03,491 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:11:03,491 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:11:03,491 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:11:03,491 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:11:03,491 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:11:03,492 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:11:03,492 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:11:03,492 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:11:03,535 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states. [2019-10-13 21:11:03,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-13 21:11:03,554 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:03,555 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] [2019-10-13 21:11:03,558 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:03,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:03,563 INFO L82 PathProgramCache]: Analyzing trace with hash -247911758, now seen corresponding path program 1 times [2019-10-13 21:11:03,570 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:03,571 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616186692] [2019-10-13 21:11:03,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:03,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:03,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:04,211 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616186692] [2019-10-13 21:11:04,212 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:04,212 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:04,213 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741883359] [2019-10-13 21:11:04,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:04,220 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:04,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:04,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:04,236 INFO L87 Difference]: Start difference. First operand 802 states. Second operand 4 states. [2019-10-13 21:11:04,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:04,484 INFO L93 Difference]: Finished difference Result 1253 states and 2015 transitions. [2019-10-13 21:11:04,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:04,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2019-10-13 21:11:04,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:04,513 INFO L225 Difference]: With dead ends: 1253 [2019-10-13 21:11:04,513 INFO L226 Difference]: Without dead ends: 635 [2019-10-13 21:11:04,523 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 [2019-10-13 21:11:04,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-13 21:11:04,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-10-13 21:11:04,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-13 21:11:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1009 transitions. [2019-10-13 21:11:04,657 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1009 transitions. Word has length 85 [2019-10-13 21:11:04,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:04,658 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1009 transitions. [2019-10-13 21:11:04,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1009 transitions. [2019-10-13 21:11:04,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 21:11:04,664 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:04,664 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] [2019-10-13 21:11:04,664 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:04,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:04,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1599117105, now seen corresponding path program 1 times [2019-10-13 21:11:04,665 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:04,665 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027766368] [2019-10-13 21:11:04,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:04,852 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027766368] [2019-10-13 21:11:04,852 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:04,852 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:04,853 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114937590] [2019-10-13 21:11:04,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:04,860 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:04,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:04,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:04,861 INFO L87 Difference]: Start difference. First operand 635 states and 1009 transitions. Second operand 4 states. [2019-10-13 21:11:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:04,978 INFO L93 Difference]: Finished difference Result 1233 states and 1976 transitions. [2019-10-13 21:11:04,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:04,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-10-13 21:11:04,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:04,992 INFO L225 Difference]: With dead ends: 1233 [2019-10-13 21:11:04,992 INFO L226 Difference]: Without dead ends: 635 [2019-10-13 21:11:05,005 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 [2019-10-13 21:11:05,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-13 21:11:05,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-10-13 21:11:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-13 21:11:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1008 transitions. [2019-10-13 21:11:05,071 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1008 transitions. Word has length 88 [2019-10-13 21:11:05,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:05,072 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1008 transitions. [2019-10-13 21:11:05,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1008 transitions. [2019-10-13 21:11:05,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 21:11:05,076 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:05,076 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, 1] [2019-10-13 21:11:05,076 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:05,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:05,077 INFO L82 PathProgramCache]: Analyzing trace with hash 246537377, now seen corresponding path program 1 times [2019-10-13 21:11:05,077 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:05,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672852124] [2019-10-13 21:11:05,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:05,078 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:05,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:05,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:05,265 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672852124] [2019-10-13 21:11:05,265 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:05,265 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:05,265 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125098371] [2019-10-13 21:11:05,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:05,266 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:05,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:05,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:05,267 INFO L87 Difference]: Start difference. First operand 635 states and 1008 transitions. Second operand 4 states. [2019-10-13 21:11:05,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:05,342 INFO L93 Difference]: Finished difference Result 1233 states and 1975 transitions. [2019-10-13 21:11:05,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:05,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2019-10-13 21:11:05,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:05,348 INFO L225 Difference]: With dead ends: 1233 [2019-10-13 21:11:05,349 INFO L226 Difference]: Without dead ends: 635 [2019-10-13 21:11:05,352 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 [2019-10-13 21:11:05,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-13 21:11:05,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-10-13 21:11:05,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-13 21:11:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1007 transitions. [2019-10-13 21:11:05,385 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1007 transitions. Word has length 89 [2019-10-13 21:11:05,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:05,386 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1007 transitions. [2019-10-13 21:11:05,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:05,386 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1007 transitions. [2019-10-13 21:11:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-13 21:11:05,389 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:05,389 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] [2019-10-13 21:11:05,389 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:05,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1708600971, now seen corresponding path program 1 times [2019-10-13 21:11:05,390 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:05,390 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012855010] [2019-10-13 21:11:05,390 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:05,391 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:05,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:05,518 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012855010] [2019-10-13 21:11:05,518 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:05,518 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:05,518 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725056348] [2019-10-13 21:11:05,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:05,519 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:05,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:05,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:05,520 INFO L87 Difference]: Start difference. First operand 635 states and 1007 transitions. Second operand 4 states. [2019-10-13 21:11:05,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:05,592 INFO L93 Difference]: Finished difference Result 1233 states and 1974 transitions. [2019-10-13 21:11:05,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:05,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-10-13 21:11:05,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:05,603 INFO L225 Difference]: With dead ends: 1233 [2019-10-13 21:11:05,603 INFO L226 Difference]: Without dead ends: 635 [2019-10-13 21:11:05,609 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 [2019-10-13 21:11:05,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-13 21:11:05,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-10-13 21:11:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-13 21:11:05,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1006 transitions. [2019-10-13 21:11:05,644 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1006 transitions. Word has length 90 [2019-10-13 21:11:05,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:05,645 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1006 transitions. [2019-10-13 21:11:05,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:05,646 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1006 transitions. [2019-10-13 21:11:05,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-13 21:11:05,653 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:05,654 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] [2019-10-13 21:11:05,654 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:05,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:05,654 INFO L82 PathProgramCache]: Analyzing trace with hash -130718371, now seen corresponding path program 1 times [2019-10-13 21:11:05,655 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:05,655 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018262639] [2019-10-13 21:11:05,655 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:05,655 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:05,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:05,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018262639] [2019-10-13 21:11:05,845 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:05,846 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:05,846 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212151393] [2019-10-13 21:11:05,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:05,847 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:05,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:05,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:05,848 INFO L87 Difference]: Start difference. First operand 635 states and 1006 transitions. Second operand 4 states. [2019-10-13 21:11:05,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:05,922 INFO L93 Difference]: Finished difference Result 1233 states and 1973 transitions. [2019-10-13 21:11:05,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:05,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-10-13 21:11:05,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:05,988 INFO L225 Difference]: With dead ends: 1233 [2019-10-13 21:11:05,989 INFO L226 Difference]: Without dead ends: 635 [2019-10-13 21:11:05,992 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 [2019-10-13 21:11:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-13 21:11:06,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-10-13 21:11:06,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-13 21:11:06,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1005 transitions. [2019-10-13 21:11:06,017 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1005 transitions. Word has length 91 [2019-10-13 21:11:06,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:06,017 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1005 transitions. [2019-10-13 21:11:06,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1005 transitions. [2019-10-13 21:11:06,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 21:11:06,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:06,019 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] [2019-10-13 21:11:06,020 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:06,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:06,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1233693625, now seen corresponding path program 1 times [2019-10-13 21:11:06,020 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:06,021 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814513880] [2019-10-13 21:11:06,021 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:06,021 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:06,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:06,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814513880] [2019-10-13 21:11:06,230 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:06,230 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:11:06,230 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702688429] [2019-10-13 21:11:06,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:11:06,231 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:06,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:11:06,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:11:06,232 INFO L87 Difference]: Start difference. First operand 635 states and 1005 transitions. Second operand 10 states. [2019-10-13 21:11:06,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:06,423 INFO L93 Difference]: Finished difference Result 1191 states and 1893 transitions. [2019-10-13 21:11:06,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:11:06,424 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2019-10-13 21:11:06,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:06,436 INFO L225 Difference]: With dead ends: 1191 [2019-10-13 21:11:06,436 INFO L226 Difference]: Without dead ends: 644 [2019-10-13 21:11:06,444 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 [2019-10-13 21:11:06,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-10-13 21:11:06,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 642. [2019-10-13 21:11:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-10-13 21:11:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1014 transitions. [2019-10-13 21:11:06,487 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1014 transitions. Word has length 92 [2019-10-13 21:11:06,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:06,490 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1014 transitions. [2019-10-13 21:11:06,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:11:06,490 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1014 transitions. [2019-10-13 21:11:06,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 21:11:06,497 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:06,498 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] [2019-10-13 21:11:06,498 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:06,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:06,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1213356250, now seen corresponding path program 1 times [2019-10-13 21:11:06,499 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:06,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685276397] [2019-10-13 21:11:06,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:06,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:06,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:06,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685276397] [2019-10-13 21:11:06,656 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:06,656 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:06,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031271444] [2019-10-13 21:11:06,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:06,657 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:06,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:06,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:06,658 INFO L87 Difference]: Start difference. First operand 642 states and 1014 transitions. Second operand 4 states. [2019-10-13 21:11:06,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:06,727 INFO L93 Difference]: Finished difference Result 1239 states and 1979 transitions. [2019-10-13 21:11:06,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:06,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-10-13 21:11:06,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:06,734 INFO L225 Difference]: With dead ends: 1239 [2019-10-13 21:11:06,734 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 21:11:06,738 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 [2019-10-13 21:11:06,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 21:11:06,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 21:11:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 21:11:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 991 transitions. [2019-10-13 21:11:06,767 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 991 transitions. Word has length 92 [2019-10-13 21:11:06,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:06,768 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 991 transitions. [2019-10-13 21:11:06,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:06,768 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 991 transitions. [2019-10-13 21:11:06,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 21:11:06,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:06,772 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] [2019-10-13 21:11:06,772 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:06,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:06,772 INFO L82 PathProgramCache]: Analyzing trace with hash -753982501, now seen corresponding path program 1 times [2019-10-13 21:11:06,772 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:06,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597337363] [2019-10-13 21:11:06,773 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:06,773 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:06,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:06,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597337363] [2019-10-13 21:11:06,989 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:06,989 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:06,989 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808299872] [2019-10-13 21:11:06,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:06,990 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:06,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:06,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:06,990 INFO L87 Difference]: Start difference. First operand 629 states and 991 transitions. Second operand 6 states. [2019-10-13 21:11:07,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:07,257 INFO L93 Difference]: Finished difference Result 1179 states and 1871 transitions. [2019-10-13 21:11:07,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:07,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-10-13 21:11:07,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:07,264 INFO L225 Difference]: With dead ends: 1179 [2019-10-13 21:11:07,264 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 21:11:07,268 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 [2019-10-13 21:11:07,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 21:11:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 21:11:07,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 21:11:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 987 transitions. [2019-10-13 21:11:07,294 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 987 transitions. Word has length 93 [2019-10-13 21:11:07,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:07,298 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 987 transitions. [2019-10-13 21:11:07,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:07,299 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 987 transitions. [2019-10-13 21:11:07,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:11:07,301 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:07,301 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] [2019-10-13 21:11:07,301 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:07,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:07,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1319589162, now seen corresponding path program 1 times [2019-10-13 21:11:07,302 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:07,302 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108159467] [2019-10-13 21:11:07,302 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:07,302 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:07,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:07,464 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108159467] [2019-10-13 21:11:07,464 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:07,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:07,465 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725414163] [2019-10-13 21:11:07,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:07,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:07,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:07,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:07,466 INFO L87 Difference]: Start difference. First operand 629 states and 987 transitions. Second operand 6 states. [2019-10-13 21:11:07,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:07,690 INFO L93 Difference]: Finished difference Result 1179 states and 1867 transitions. [2019-10-13 21:11:07,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:07,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2019-10-13 21:11:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:07,696 INFO L225 Difference]: With dead ends: 1179 [2019-10-13 21:11:07,696 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 21:11:07,699 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 [2019-10-13 21:11:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 21:11:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 21:11:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 21:11:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 983 transitions. [2019-10-13 21:11:07,723 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 983 transitions. Word has length 94 [2019-10-13 21:11:07,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:07,724 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 983 transitions. [2019-10-13 21:11:07,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:07,724 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 983 transitions. [2019-10-13 21:11:07,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 21:11:07,726 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:07,726 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] [2019-10-13 21:11:07,726 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:07,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:07,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1137004480, now seen corresponding path program 1 times [2019-10-13 21:11:07,727 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:07,727 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558521896] [2019-10-13 21:11:07,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:07,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:07,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:07,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558521896] [2019-10-13 21:11:07,898 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:07,898 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:07,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445550412] [2019-10-13 21:11:07,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:07,899 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:07,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:07,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:07,900 INFO L87 Difference]: Start difference. First operand 629 states and 983 transitions. Second operand 6 states. [2019-10-13 21:11:08,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:08,109 INFO L93 Difference]: Finished difference Result 1179 states and 1863 transitions. [2019-10-13 21:11:08,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:08,110 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-10-13 21:11:08,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:08,115 INFO L225 Difference]: With dead ends: 1179 [2019-10-13 21:11:08,115 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 21:11:08,119 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 [2019-10-13 21:11:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 21:11:08,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 21:11:08,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 21:11:08,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 979 transitions. [2019-10-13 21:11:08,144 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 979 transitions. Word has length 95 [2019-10-13 21:11:08,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:08,145 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 979 transitions. [2019-10-13 21:11:08,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:08,145 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 979 transitions. [2019-10-13 21:11:08,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 21:11:08,146 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:08,147 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] [2019-10-13 21:11:08,147 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:08,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:08,147 INFO L82 PathProgramCache]: Analyzing trace with hash -2110108608, now seen corresponding path program 1 times [2019-10-13 21:11:08,148 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:08,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885649133] [2019-10-13 21:11:08,148 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:08,148 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:08,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:08,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885649133] [2019-10-13 21:11:08,278 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:08,279 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:08,279 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325787841] [2019-10-13 21:11:08,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:08,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:08,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:08,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:08,280 INFO L87 Difference]: Start difference. First operand 629 states and 979 transitions. Second operand 7 states. [2019-10-13 21:11:08,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:08,397 INFO L93 Difference]: Finished difference Result 1179 states and 1859 transitions. [2019-10-13 21:11:08,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:08,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-13 21:11:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:08,404 INFO L225 Difference]: With dead ends: 1179 [2019-10-13 21:11:08,405 INFO L226 Difference]: Without dead ends: 608 [2019-10-13 21:11:08,408 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 [2019-10-13 21:11:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-13 21:11:08,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-10-13 21:11:08,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-13 21:11:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 945 transitions. [2019-10-13 21:11:08,429 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 945 transitions. Word has length 95 [2019-10-13 21:11:08,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:08,429 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 945 transitions. [2019-10-13 21:11:08,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 945 transitions. [2019-10-13 21:11:08,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:11:08,431 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:08,431 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] [2019-10-13 21:11:08,431 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:08,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:08,431 INFO L82 PathProgramCache]: Analyzing trace with hash -266950161, now seen corresponding path program 1 times [2019-10-13 21:11:08,432 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:08,432 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822770636] [2019-10-13 21:11:08,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:08,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:08,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:08,546 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822770636] [2019-10-13 21:11:08,546 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:08,546 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:08,546 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671642043] [2019-10-13 21:11:08,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:08,547 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:08,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:08,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:08,548 INFO L87 Difference]: Start difference. First operand 608 states and 945 transitions. Second operand 6 states. [2019-10-13 21:11:08,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:08,653 INFO L93 Difference]: Finished difference Result 1158 states and 1825 transitions. [2019-10-13 21:11:08,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:08,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-10-13 21:11:08,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:08,658 INFO L225 Difference]: With dead ends: 1158 [2019-10-13 21:11:08,658 INFO L226 Difference]: Without dead ends: 608 [2019-10-13 21:11:08,661 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 [2019-10-13 21:11:08,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-13 21:11:08,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-10-13 21:11:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-13 21:11:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 944 transitions. [2019-10-13 21:11:08,683 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 944 transitions. Word has length 96 [2019-10-13 21:11:08,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:08,683 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 944 transitions. [2019-10-13 21:11:08,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:08,684 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 944 transitions. [2019-10-13 21:11:08,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 21:11:08,685 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:08,685 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] [2019-10-13 21:11:08,686 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:08,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:08,686 INFO L82 PathProgramCache]: Analyzing trace with hash -878667867, now seen corresponding path program 1 times [2019-10-13 21:11:08,686 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:08,687 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867652653] [2019-10-13 21:11:08,687 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:08,687 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:08,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:08,876 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867652653] [2019-10-13 21:11:08,877 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:08,877 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:08,877 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146678619] [2019-10-13 21:11:08,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:08,878 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:08,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:08,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:08,879 INFO L87 Difference]: Start difference. First operand 608 states and 944 transitions. Second operand 6 states. [2019-10-13 21:11:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:09,021 INFO L93 Difference]: Finished difference Result 1158 states and 1824 transitions. [2019-10-13 21:11:09,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:09,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-10-13 21:11:09,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:09,029 INFO L225 Difference]: With dead ends: 1158 [2019-10-13 21:11:09,029 INFO L226 Difference]: Without dead ends: 608 [2019-10-13 21:11:09,033 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 [2019-10-13 21:11:09,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-13 21:11:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-10-13 21:11:09,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-13 21:11:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 943 transitions. [2019-10-13 21:11:09,059 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 943 transitions. Word has length 97 [2019-10-13 21:11:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:09,059 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 943 transitions. [2019-10-13 21:11:09,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:09,060 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 943 transitions. [2019-10-13 21:11:09,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 21:11:09,061 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:09,062 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] [2019-10-13 21:11:09,062 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:09,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:09,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1594122932, now seen corresponding path program 1 times [2019-10-13 21:11:09,063 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:09,063 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341129857] [2019-10-13 21:11:09,063 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:09,063 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:09,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:09,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:09,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341129857] [2019-10-13 21:11:09,270 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:09,270 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 21:11:09,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247748531] [2019-10-13 21:11:09,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:11:09,271 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:09,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:11:09,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:09,272 INFO L87 Difference]: Start difference. First operand 608 states and 943 transitions. Second operand 12 states. [2019-10-13 21:11:09,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:09,467 INFO L93 Difference]: Finished difference Result 1159 states and 1823 transitions. [2019-10-13 21:11:09,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:11:09,468 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2019-10-13 21:11:09,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:09,473 INFO L225 Difference]: With dead ends: 1159 [2019-10-13 21:11:09,473 INFO L226 Difference]: Without dead ends: 608 [2019-10-13 21:11:09,476 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 [2019-10-13 21:11:09,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-13 21:11:09,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-10-13 21:11:09,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-13 21:11:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 942 transitions. [2019-10-13 21:11:09,497 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 942 transitions. Word has length 98 [2019-10-13 21:11:09,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:09,498 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 942 transitions. [2019-10-13 21:11:09,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:11:09,498 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 942 transitions. [2019-10-13 21:11:09,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 21:11:09,500 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:09,500 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] [2019-10-13 21:11:09,500 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:09,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:09,501 INFO L82 PathProgramCache]: Analyzing trace with hash -679219796, now seen corresponding path program 1 times [2019-10-13 21:11:09,501 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:09,501 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176465053] [2019-10-13 21:11:09,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:09,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:09,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:09,684 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176465053] [2019-10-13 21:11:09,684 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:09,684 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:09,684 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289917375] [2019-10-13 21:11:09,685 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:09,685 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:09,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:09,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:09,686 INFO L87 Difference]: Start difference. First operand 608 states and 942 transitions. Second operand 6 states. [2019-10-13 21:11:14,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:14,062 INFO L93 Difference]: Finished difference Result 1788 states and 2856 transitions. [2019-10-13 21:11:14,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:14,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-10-13 21:11:14,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:14,070 INFO L225 Difference]: With dead ends: 1788 [2019-10-13 21:11:14,070 INFO L226 Difference]: Without dead ends: 1246 [2019-10-13 21:11:14,076 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 [2019-10-13 21:11:14,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2019-10-13 21:11:14,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1119. [2019-10-13 21:11:14,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2019-10-13 21:11:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1781 transitions. [2019-10-13 21:11:14,136 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1781 transitions. Word has length 99 [2019-10-13 21:11:14,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:14,137 INFO L462 AbstractCegarLoop]: Abstraction has 1119 states and 1781 transitions. [2019-10-13 21:11:14,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:14,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1781 transitions. [2019-10-13 21:11:14,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:11:14,143 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:14,143 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] [2019-10-13 21:11:14,144 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:14,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:14,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1052224064, now seen corresponding path program 1 times [2019-10-13 21:11:14,144 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:14,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735293194] [2019-10-13 21:11:14,145 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:14,145 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:14,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:11:14,386 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735293194] [2019-10-13 21:11:14,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563422299] [2019-10-13 21:11:14,391 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 [2019-10-13 21:11:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:15,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:11:15,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:11:15,222 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:11:16,389 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:11:16,389 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-10-13 21:11:16,389 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286587593] [2019-10-13 21:11:16,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:16,390 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:16,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:16,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:11:16,391 INFO L87 Difference]: Start difference. First operand 1119 states and 1781 transitions. Second operand 5 states. [2019-10-13 21:11:17,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:17,421 INFO L93 Difference]: Finished difference Result 2188 states and 3571 transitions. [2019-10-13 21:11:17,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:17,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-10-13 21:11:17,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:17,433 INFO L225 Difference]: With dead ends: 2188 [2019-10-13 21:11:17,434 INFO L226 Difference]: Without dead ends: 1135 [2019-10-13 21:11:17,441 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 302 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-10-13 21:11:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2019-10-13 21:11:17,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1135. [2019-10-13 21:11:17,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1135 states. [2019-10-13 21:11:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1807 transitions. [2019-10-13 21:11:17,533 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1807 transitions. Word has length 158 [2019-10-13 21:11:17,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:17,533 INFO L462 AbstractCegarLoop]: Abstraction has 1135 states and 1807 transitions. [2019-10-13 21:11:17,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:17,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1807 transitions. [2019-10-13 21:11:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:11:17,539 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:17,539 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] [2019-10-13 21:11:17,758 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:17,758 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:17,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:17,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1244435875, now seen corresponding path program 1 times [2019-10-13 21:11:17,759 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:17,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029797345] [2019-10-13 21:11:17,759 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:17,759 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:17,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:11:17,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029797345] [2019-10-13 21:11:17,999 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:17,999 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 21:11:17,999 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031859545] [2019-10-13 21:11:18,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:11:18,000 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:18,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:11:18,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:18,002 INFO L87 Difference]: Start difference. First operand 1135 states and 1807 transitions. Second operand 12 states. [2019-10-13 21:11:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:31,100 INFO L93 Difference]: Finished difference Result 3698 states and 5906 transitions. [2019-10-13 21:11:31,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 21:11:31,101 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 159 [2019-10-13 21:11:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:31,118 INFO L225 Difference]: With dead ends: 3698 [2019-10-13 21:11:31,119 INFO L226 Difference]: Without dead ends: 2629 [2019-10-13 21:11:31,125 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:11:31,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2019-10-13 21:11:31,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2571. [2019-10-13 21:11:31,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2571 states. [2019-10-13 21:11:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 4064 transitions. [2019-10-13 21:11:31,252 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 4064 transitions. Word has length 159 [2019-10-13 21:11:31,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:31,253 INFO L462 AbstractCegarLoop]: Abstraction has 2571 states and 4064 transitions. [2019-10-13 21:11:31,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:11:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 4064 transitions. [2019-10-13 21:11:31,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 21:11:31,259 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:31,259 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] [2019-10-13 21:11:31,259 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:31,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:31,260 INFO L82 PathProgramCache]: Analyzing trace with hash -922827090, now seen corresponding path program 1 times [2019-10-13 21:11:31,260 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:31,260 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142042365] [2019-10-13 21:11:31,260 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:31,260 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:31,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:11:31,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142042365] [2019-10-13 21:11:31,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235669221] [2019-10-13 21:11:31,410 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 [2019-10-13 21:11:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:32,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 3055 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:11:32,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:11:32,305 INFO L321 TraceCheckSpWp]: Computing backward predicates...