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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:08:28,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:08:28,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:08:28,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:08:28,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:08:28,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:08:28,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:08:28,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:08:28,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:08:28,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:08:28,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:08:28,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:08:28,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:08:28,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:08:28,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:08:28,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:08:28,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:08:28,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:08:28,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:08:28,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:08:28,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:08:28,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:08:28,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:08:28,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:08:28,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:08:28,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:08:28,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:08:28,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:08:28,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:08:28,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:08:28,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:08:28,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:08:28,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:08:28,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:08:28,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:08:28,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:08:28,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:08:28,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:08:28,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:08:28,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:08:28,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:08:28,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:08:28,589 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:08:28,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:08:28,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:08:28,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:08:28,591 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:08:28,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:08:28,592 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:08:28,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:08:28,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:08:28,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:08:28,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:08:28,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:08:28,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:08:28,593 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:08:28,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:08:28,593 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:08:28,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:08:28,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:08:28,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:08:28,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:08:28,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:08:28,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:08:28,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:08:28,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:08:28,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:08:28,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:08:28,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:08:28,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:08:28,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:08:28,900 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:08:28,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:08:28,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:08:28,923 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:08:28,923 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:08:28,925 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product25.cil.c [2019-10-15 03:08:29,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5de032ce1/6f402998264642b286002c16a1b67e64/FLAGe58320e01 [2019-10-15 03:08:29,822 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:08:29,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product25.cil.c [2019-10-15 03:08:29,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5de032ce1/6f402998264642b286002c16a1b67e64/FLAGe58320e01 [2019-10-15 03:08:30,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5de032ce1/6f402998264642b286002c16a1b67e64 [2019-10-15 03:08:30,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:08:30,043 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:08:30,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:30,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:08:30,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:08:30,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:30" (1/1) ... [2019-10-15 03:08:30,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7189696a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:30, skipping insertion in model container [2019-10-15 03:08:30,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:30" (1/1) ... [2019-10-15 03:08:30,061 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:08:30,147 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:08:30,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:30,871 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:08:31,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:31,118 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:08:31,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:31 WrapperNode [2019-10-15 03:08:31,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:31,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:08:31,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:08:31,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:08:31,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:31" (1/1) ... [2019-10-15 03:08:31,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:31" (1/1) ... [2019-10-15 03:08:31,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:31" (1/1) ... [2019-10-15 03:08:31,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:31" (1/1) ... [2019-10-15 03:08:31,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:31" (1/1) ... [2019-10-15 03:08:31,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:31" (1/1) ... [2019-10-15 03:08:31,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:31" (1/1) ... [2019-10-15 03:08:31,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:08:31,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:08:31,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:08:31,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:08:31,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:08:31,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:08:31,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:08:31,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:31,425 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:08:31,425 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:08:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:08:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:08:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:08:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:08:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:08:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:08:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:08:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:08:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:08:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:08:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:08:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:08:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:08:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:08:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:08:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:08:31,438 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:08:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:08:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:08:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:08:31,441 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:08:31,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:08:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:08:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:08:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:08:31,443 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:08:31,443 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:08:31,443 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:31,443 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:08:31,444 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:08:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:08:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:08:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:08:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:08:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:08:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:08:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:08:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:08:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:08:31,447 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:08:31,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:08:31,447 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:08:31,448 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:08:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:08:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:08:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:08:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:08:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:08:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:08:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:08:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:08:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:08:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:08:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:08:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:08:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:08:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:08:31,454 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:08:31,454 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:08:31,454 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:08:31,454 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:08:31,454 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:08:31,454 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:08:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:08:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:08:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:08:31,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:08:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:08:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:08:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:08:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:08:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:08:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:08:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:08:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:08:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:08:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:08:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:08:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:08:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:08:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:08:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:08:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:08:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:08:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:08:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:08:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:08:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:08:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:08:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:08:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:08:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:08:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:08:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:08:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:08:31,461 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:08:31,461 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:08:31,461 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:08:31,461 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:08:31,461 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:08:31,461 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:08:31,461 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:08:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:08:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:08:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:08:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:08:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:08:31,462 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:08:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:08:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:08:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:08:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:08:31,463 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:08:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:08:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:08:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:08:31,464 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:08:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:08:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:08:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:08:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:08:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:08:31,465 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:08:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:08:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:08:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:08:31,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:08:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:08:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:08:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:08:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:08:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:08:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:08:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:08:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:08:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:08:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:08:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:08:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:08:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:08:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:08:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:08:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:08:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:08:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:08:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:08:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:08:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:08:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:08:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:08:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:08:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:08:38,264 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:08:38,265 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:08:38,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:38 BoogieIcfgContainer [2019-10-15 03:08:38,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:08:38,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:08:38,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:08:38,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:08:38,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:08:30" (1/3) ... [2019-10-15 03:08:38,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d78575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:38, skipping insertion in model container [2019-10-15 03:08:38,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:31" (2/3) ... [2019-10-15 03:08:38,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d78575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:38, skipping insertion in model container [2019-10-15 03:08:38,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:38" (3/3) ... [2019-10-15 03:08:38,279 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product25.cil.c [2019-10-15 03:08:38,293 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:08:38,304 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:08:38,319 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:08:38,355 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:08:38,355 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:08:38,355 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:08:38,356 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:08:38,356 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:08:38,356 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:08:38,356 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:08:38,356 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:08:38,399 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states. [2019-10-15 03:08:38,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 03:08:38,421 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:38,423 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:38,425 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:38,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:38,432 INFO L82 PathProgramCache]: Analyzing trace with hash -450326218, now seen corresponding path program 1 times [2019-10-15 03:08:38,443 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:38,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891636734] [2019-10-15 03:08:38,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:38,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:38,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:39,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891636734] [2019-10-15 03:08:39,207 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:39,207 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:08:39,208 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134957001] [2019-10-15 03:08:39,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:08:39,214 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:39,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:08:39,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:39,231 INFO L87 Difference]: Start difference. First operand 549 states. Second operand 2 states. [2019-10-15 03:08:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:39,311 INFO L93 Difference]: Finished difference Result 452 states and 675 transitions. [2019-10-15 03:08:39,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:08:39,313 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 92 [2019-10-15 03:08:39,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:39,341 INFO L225 Difference]: With dead ends: 452 [2019-10-15 03:08:39,341 INFO L226 Difference]: Without dead ends: 418 [2019-10-15 03:08:39,346 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:39,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2019-10-15 03:08:39,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2019-10-15 03:08:39,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2019-10-15 03:08:39,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 624 transitions. [2019-10-15 03:08:39,515 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 624 transitions. Word has length 92 [2019-10-15 03:08:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:39,518 INFO L462 AbstractCegarLoop]: Abstraction has 418 states and 624 transitions. [2019-10-15 03:08:39,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:08:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 624 transitions. [2019-10-15 03:08:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 03:08:39,534 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:39,534 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:39,535 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:39,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1835436988, now seen corresponding path program 1 times [2019-10-15 03:08:39,537 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:39,537 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428346755] [2019-10-15 03:08:39,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:39,538 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:39,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:39,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428346755] [2019-10-15 03:08:39,930 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:39,930 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:08:39,931 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494912623] [2019-10-15 03:08:39,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:08:39,933 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:39,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:08:39,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:39,934 INFO L87 Difference]: Start difference. First operand 418 states and 624 transitions. Second operand 8 states. [2019-10-15 03:08:40,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:40,153 INFO L93 Difference]: Finished difference Result 833 states and 1275 transitions. [2019-10-15 03:08:40,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:08:40,154 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-10-15 03:08:40,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:40,165 INFO L225 Difference]: With dead ends: 833 [2019-10-15 03:08:40,165 INFO L226 Difference]: Without dead ends: 457 [2019-10-15 03:08:40,183 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:40,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2019-10-15 03:08:40,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 422. [2019-10-15 03:08:40,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2019-10-15 03:08:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 628 transitions. [2019-10-15 03:08:40,234 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 628 transitions. Word has length 93 [2019-10-15 03:08:40,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:40,235 INFO L462 AbstractCegarLoop]: Abstraction has 422 states and 628 transitions. [2019-10-15 03:08:40,235 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:08:40,235 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 628 transitions. [2019-10-15 03:08:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 03:08:40,239 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:40,240 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:40,240 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:40,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:40,241 INFO L82 PathProgramCache]: Analyzing trace with hash -970020071, now seen corresponding path program 1 times [2019-10-15 03:08:40,241 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:40,241 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025249841] [2019-10-15 03:08:40,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:40,242 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:40,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:40,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:40,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025249841] [2019-10-15 03:08:40,640 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:40,641 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:40,641 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232411531] [2019-10-15 03:08:40,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:40,644 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:40,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:40,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:40,645 INFO L87 Difference]: Start difference. First operand 422 states and 628 transitions. Second operand 7 states. [2019-10-15 03:08:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:46,046 INFO L93 Difference]: Finished difference Result 1297 states and 1993 transitions. [2019-10-15 03:08:46,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 03:08:46,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-10-15 03:08:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:46,059 INFO L225 Difference]: With dead ends: 1297 [2019-10-15 03:08:46,059 INFO L226 Difference]: Without dead ends: 917 [2019-10-15 03:08:46,063 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:08:46,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2019-10-15 03:08:46,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 890. [2019-10-15 03:08:46,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2019-10-15 03:08:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1371 transitions. [2019-10-15 03:08:46,157 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1371 transitions. Word has length 97 [2019-10-15 03:08:46,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:46,159 INFO L462 AbstractCegarLoop]: Abstraction has 890 states and 1371 transitions. [2019-10-15 03:08:46,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:46,159 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1371 transitions. [2019-10-15 03:08:46,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 03:08:46,163 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:46,163 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, 1, 1] [2019-10-15 03:08:46,163 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:46,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:46,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1294264599, now seen corresponding path program 1 times [2019-10-15 03:08:46,164 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:46,164 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753677005] [2019-10-15 03:08:46,164 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:46,164 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:46,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:46,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753677005] [2019-10-15 03:08:46,364 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:46,364 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:08:46,364 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520441029] [2019-10-15 03:08:46,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:08:46,365 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:46,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:08:46,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:46,367 INFO L87 Difference]: Start difference. First operand 890 states and 1371 transitions. Second operand 5 states. [2019-10-15 03:08:46,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:46,458 INFO L93 Difference]: Finished difference Result 1407 states and 2181 transitions. [2019-10-15 03:08:46,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:46,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2019-10-15 03:08:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:46,468 INFO L225 Difference]: With dead ends: 1407 [2019-10-15 03:08:46,468 INFO L226 Difference]: Without dead ends: 912 [2019-10-15 03:08:46,471 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:46,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2019-10-15 03:08:46,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 902. [2019-10-15 03:08:46,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2019-10-15 03:08:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1386 transitions. [2019-10-15 03:08:46,544 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1386 transitions. Word has length 101 [2019-10-15 03:08:46,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:46,545 INFO L462 AbstractCegarLoop]: Abstraction has 902 states and 1386 transitions. [2019-10-15 03:08:46,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:08:46,545 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1386 transitions. [2019-10-15 03:08:46,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-15 03:08:46,549 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:46,549 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, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:46,549 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:46,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:46,550 INFO L82 PathProgramCache]: Analyzing trace with hash -12595921, now seen corresponding path program 1 times [2019-10-15 03:08:46,550 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:46,550 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376263742] [2019-10-15 03:08:46,550 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:46,550 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:46,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:46,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376263742] [2019-10-15 03:08:46,817 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:46,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:08:46,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581691760] [2019-10-15 03:08:46,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:08:46,818 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:46,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:08:46,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:46,819 INFO L87 Difference]: Start difference. First operand 902 states and 1386 transitions. Second operand 8 states. [2019-10-15 03:08:52,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:52,319 INFO L93 Difference]: Finished difference Result 1909 states and 2939 transitions. [2019-10-15 03:08:52,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:08:52,320 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2019-10-15 03:08:52,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:52,336 INFO L225 Difference]: With dead ends: 1909 [2019-10-15 03:08:52,336 INFO L226 Difference]: Without dead ends: 1306 [2019-10-15 03:08:52,340 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:08:52,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2019-10-15 03:08:52,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1256. [2019-10-15 03:08:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1256 states. [2019-10-15 03:08:52,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1887 transitions. [2019-10-15 03:08:52,413 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1887 transitions. Word has length 105 [2019-10-15 03:08:52,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:52,414 INFO L462 AbstractCegarLoop]: Abstraction has 1256 states and 1887 transitions. [2019-10-15 03:08:52,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:08:52,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1887 transitions. [2019-10-15 03:08:52,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-15 03:08:52,417 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:52,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:52,418 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:52,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:52,418 INFO L82 PathProgramCache]: Analyzing trace with hash -648768707, now seen corresponding path program 1 times [2019-10-15 03:08:52,419 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:52,419 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443890702] [2019-10-15 03:08:52,419 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:52,419 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:52,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:52,591 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443890702] [2019-10-15 03:08:52,591 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:52,591 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:52,591 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355989201] [2019-10-15 03:08:52,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:52,592 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:52,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:52,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:52,593 INFO L87 Difference]: Start difference. First operand 1256 states and 1887 transitions. Second operand 7 states. [2019-10-15 03:08:52,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:52,797 INFO L93 Difference]: Finished difference Result 2357 states and 3628 transitions. [2019-10-15 03:08:52,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:08:52,797 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2019-10-15 03:08:52,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:52,807 INFO L225 Difference]: With dead ends: 2357 [2019-10-15 03:08:52,807 INFO L226 Difference]: Without dead ends: 1256 [2019-10-15 03:08:52,813 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:52,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2019-10-15 03:08:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1256. [2019-10-15 03:08:52,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1256 states. [2019-10-15 03:08:52,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1855 transitions. [2019-10-15 03:08:52,877 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1855 transitions. Word has length 108 [2019-10-15 03:08:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:52,878 INFO L462 AbstractCegarLoop]: Abstraction has 1256 states and 1855 transitions. [2019-10-15 03:08:52,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:52,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1855 transitions. [2019-10-15 03:08:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:08:52,881 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:52,881 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:08:52,881 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:52,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:52,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1459666528, now seen corresponding path program 1 times [2019-10-15 03:08:52,882 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:52,882 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807017615] [2019-10-15 03:08:52,883 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:52,883 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:52,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:08:53,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807017615] [2019-10-15 03:08:53,138 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:53,138 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:53,138 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063092629] [2019-10-15 03:08:53,139 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:53,139 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:53,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:53,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:53,140 INFO L87 Difference]: Start difference. First operand 1256 states and 1855 transitions. Second operand 7 states. [2019-10-15 03:08:57,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:57,413 INFO L93 Difference]: Finished difference Result 2226 states and 3298 transitions. [2019-10-15 03:08:57,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:08:57,414 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-10-15 03:08:57,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:57,424 INFO L225 Difference]: With dead ends: 2226 [2019-10-15 03:08:57,424 INFO L226 Difference]: Without dead ends: 1326 [2019-10-15 03:08:57,429 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:08:57,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2019-10-15 03:08:57,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1283. [2019-10-15 03:08:57,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2019-10-15 03:08:57,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1889 transitions. [2019-10-15 03:08:57,499 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1889 transitions. Word has length 110 [2019-10-15 03:08:57,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:57,500 INFO L462 AbstractCegarLoop]: Abstraction has 1283 states and 1889 transitions. [2019-10-15 03:08:57,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:57,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1889 transitions. [2019-10-15 03:08:57,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 03:08:57,504 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:57,504 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:08:57,505 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:57,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:57,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1308212542, now seen corresponding path program 1 times [2019-10-15 03:08:57,505 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:57,506 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283282632] [2019-10-15 03:08:57,506 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:57,506 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:57,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:08:57,688 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283282632] [2019-10-15 03:08:57,689 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:57,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:57,689 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865426639] [2019-10-15 03:08:57,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:57,691 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:57,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:57,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:57,691 INFO L87 Difference]: Start difference. First operand 1283 states and 1889 transitions. Second operand 4 states. [2019-10-15 03:08:59,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:59,752 INFO L93 Difference]: Finished difference Result 3874 states and 5840 transitions. [2019-10-15 03:08:59,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:59,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-15 03:08:59,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:59,770 INFO L225 Difference]: With dead ends: 3874 [2019-10-15 03:08:59,770 INFO L226 Difference]: Without dead ends: 2633 [2019-10-15 03:08:59,778 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:59,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2019-10-15 03:08:59,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2488. [2019-10-15 03:08:59,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2488 states. [2019-10-15 03:08:59,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 3724 transitions. [2019-10-15 03:08:59,912 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 3724 transitions. Word has length 117 [2019-10-15 03:08:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:59,913 INFO L462 AbstractCegarLoop]: Abstraction has 2488 states and 3724 transitions. [2019-10-15 03:08:59,913 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:59,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 3724 transitions. [2019-10-15 03:08:59,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:08:59,916 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:59,917 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:08:59,917 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:59,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:59,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1901172641, now seen corresponding path program 1 times [2019-10-15 03:08:59,918 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:59,918 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428478364] [2019-10-15 03:08:59,918 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:59,918 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:59,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:09:00,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428478364] [2019-10-15 03:09:00,128 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:00,128 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:09:00,128 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759725125] [2019-10-15 03:09:00,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:00,129 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:00,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:00,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:09:00,131 INFO L87 Difference]: Start difference. First operand 2488 states and 3724 transitions. Second operand 4 states. [2019-10-15 03:09:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:02,434 INFO L93 Difference]: Finished difference Result 7411 states and 11349 transitions. [2019-10-15 03:09:02,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:09:02,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-15 03:09:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:02,472 INFO L225 Difference]: With dead ends: 7411 [2019-10-15 03:09:02,473 INFO L226 Difference]: Without dead ends: 4966 [2019-10-15 03:09:02,484 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:09:02,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4966 states. [2019-10-15 03:09:02,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4966 to 4788. [2019-10-15 03:09:02,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4788 states. [2019-10-15 03:09:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4788 states to 4788 states and 7260 transitions. [2019-10-15 03:09:02,750 INFO L78 Accepts]: Start accepts. Automaton has 4788 states and 7260 transitions. Word has length 118 [2019-10-15 03:09:02,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:02,751 INFO L462 AbstractCegarLoop]: Abstraction has 4788 states and 7260 transitions. [2019-10-15 03:09:02,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:09:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4788 states and 7260 transitions. [2019-10-15 03:09:02,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-15 03:09:02,755 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:02,755 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:02,755 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:02,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:02,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1330496636, now seen corresponding path program 1 times [2019-10-15 03:09:02,756 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:02,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166295064] [2019-10-15 03:09:02,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:02,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:02,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:02,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:02,889 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166295064] [2019-10-15 03:09:02,889 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:02,889 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:09:02,890 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134472021] [2019-10-15 03:09:02,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:02,890 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:02,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:02,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:09:02,891 INFO L87 Difference]: Start difference. First operand 4788 states and 7260 transitions. Second operand 4 states. [2019-10-15 03:09:06,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:06,293 INFO L93 Difference]: Finished difference Result 14393 states and 22559 transitions. [2019-10-15 03:09:06,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:09:06,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-10-15 03:09:06,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:06,399 INFO L225 Difference]: With dead ends: 14393 [2019-10-15 03:09:06,400 INFO L226 Difference]: Without dead ends: 9650 [2019-10-15 03:09:06,447 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:09:06,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9650 states. [2019-10-15 03:09:07,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9650 to 9407. [2019-10-15 03:09:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9407 states. [2019-10-15 03:09:07,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9407 states to 9407 states and 14550 transitions. [2019-10-15 03:09:07,285 INFO L78 Accepts]: Start accepts. Automaton has 9407 states and 14550 transitions. Word has length 116 [2019-10-15 03:09:07,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:07,289 INFO L462 AbstractCegarLoop]: Abstraction has 9407 states and 14550 transitions. [2019-10-15 03:09:07,289 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:09:07,289 INFO L276 IsEmpty]: Start isEmpty. Operand 9407 states and 14550 transitions. [2019-10-15 03:09:07,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:09:07,295 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:07,295 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:09:07,296 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:07,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:07,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1706942399, now seen corresponding path program 1 times [2019-10-15 03:09:07,298 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:07,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433232224] [2019-10-15 03:09:07,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:07,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:07,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:09:07,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433232224] [2019-10-15 03:09:07,612 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:07,612 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:09:07,613 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379853950] [2019-10-15 03:09:07,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:07,614 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:07,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:07,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:09:07,615 INFO L87 Difference]: Start difference. First operand 9407 states and 14550 transitions. Second operand 4 states.