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_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:41,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:41,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:41,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:41,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:41,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:41,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:41,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:41,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:41,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:41,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:41,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:41,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:41,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:41,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:41,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:41,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:41,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:41,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:41,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:41,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:41,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:41,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:41,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:41,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:41,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:41,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:41,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:41,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:41,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:41,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:41,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:41,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:41,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:41,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:41,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:41,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:41,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:41,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:41,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:41,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:41,611 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 23:03:41,643 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:41,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:41,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:41,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:41,649 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:41,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:41,649 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:41,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:41,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:41,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:41,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:41,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:41,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:41,652 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:41,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:41,653 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:41,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:41,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:41,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:41,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:41,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:41,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:41,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:41,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:41,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:41,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:41,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:41,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:41,658 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 [2019-10-13 23:03:41,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:41,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:41,986 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:41,988 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:41,988 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:41,989 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product17.cil.c [2019-10-13 23:03:42,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c238b322/67b98ad151b94eb18b93abdf8e8a3442/FLAG4b71028f1 [2019-10-13 23:03:42,733 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:42,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product17.cil.c [2019-10-13 23:03:42,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c238b322/67b98ad151b94eb18b93abdf8e8a3442/FLAG4b71028f1 [2019-10-13 23:03:42,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c238b322/67b98ad151b94eb18b93abdf8e8a3442 [2019-10-13 23:03:42,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:42,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:42,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:42,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:42,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:42,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:42" (1/1) ... [2019-10-13 23:03:42,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54803c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:42, skipping insertion in model container [2019-10-13 23:03:42,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:42" (1/1) ... [2019-10-13 23:03:42,977 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:43,062 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:43,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:43,842 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:44,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:44,072 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:44,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44 WrapperNode [2019-10-13 23:03:44,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:44,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:44,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:44,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:44,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (1/1) ... [2019-10-13 23:03:44,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (1/1) ... [2019-10-13 23:03:44,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (1/1) ... [2019-10-13 23:03:44,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (1/1) ... [2019-10-13 23:03:44,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (1/1) ... [2019-10-13 23:03:44,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (1/1) ... [2019-10-13 23:03:44,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (1/1) ... [2019-10-13 23:03:44,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:44,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:44,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:44,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:44,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (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 23:03:44,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:44,363 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:44,363 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:44,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:44,364 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:44,364 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:44,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:44,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:44,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:44,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:44,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:44,366 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:44,370 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:44,370 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:44,370 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:44,370 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:44,371 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:44,371 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:44,371 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:44,372 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:44,372 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:44,372 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:44,372 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:44,372 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:44,373 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:44,373 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:44,373 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:44,374 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:44,374 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:44,374 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:44,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:44,374 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:44,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:44,375 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:44,375 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:44,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:44,375 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:03:44,376 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:44,376 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:03:44,376 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:44,376 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:44,376 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:44,378 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:44,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:44,378 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:44,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:44,378 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:44,378 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:44,379 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:44,380 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:44,380 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:44,380 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:44,380 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:44,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:03:44,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:03:44,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:03:44,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:03:44,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:44,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:44,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:44,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:44,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:44,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:44,383 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:44,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:44,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:44,385 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:44,385 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:44,385 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:44,385 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:44,386 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:44,387 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:44,387 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:44,387 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:44,387 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:44,388 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:44,388 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:03:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:03:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:44,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:44,396 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:44,396 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:44,397 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:44,398 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:44,398 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:44,399 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:44,399 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:44,399 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:03:44,399 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:03:44,399 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:44,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:03:44,400 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:44,401 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:44,406 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:44,406 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:44,407 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:44,407 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:44,407 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:44,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:03:44,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:44,409 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:44,417 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:44,418 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:44,418 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:44,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:44,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:44,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:44,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:44,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:44,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:44,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:44,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:44,421 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:44,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:44,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:44,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:44,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:44,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:44,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:44,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:49,307 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:49,308 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:49,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:49 BoogieIcfgContainer [2019-10-13 23:03:49,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:49,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:49,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:49,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:49,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:42" (1/3) ... [2019-10-13 23:03:49,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba87ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:49, skipping insertion in model container [2019-10-13 23:03:49,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (2/3) ... [2019-10-13 23:03:49,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba87ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:49, skipping insertion in model container [2019-10-13 23:03:49,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:49" (3/3) ... [2019-10-13 23:03:49,317 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product17.cil.c [2019-10-13 23:03:49,325 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:49,333 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:49,344 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:49,374 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:49,374 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:49,374 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:49,374 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:49,374 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:49,374 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:49,375 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:49,375 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:49,408 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states. [2019-10-13 23:03:49,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 23:03:49,430 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:49,431 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] [2019-10-13 23:03:49,434 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:49,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:49,441 INFO L82 PathProgramCache]: Analyzing trace with hash 419507359, now seen corresponding path program 1 times [2019-10-13 23:03:49,451 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:49,452 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817377403] [2019-10-13 23:03:49,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:49,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:49,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:50,112 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 23:03:50,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817377403] [2019-10-13 23:03:50,113 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:50,114 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:03:50,114 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109971136] [2019-10-13 23:03:50,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:03:50,122 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:50,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:03:50,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:50,139 INFO L87 Difference]: Start difference. First operand 542 states. Second operand 2 states. [2019-10-13 23:03:50,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:50,232 INFO L93 Difference]: Finished difference Result 445 states and 668 transitions. [2019-10-13 23:03:50,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:03:50,234 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 92 [2019-10-13 23:03:50,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:50,258 INFO L225 Difference]: With dead ends: 445 [2019-10-13 23:03:50,258 INFO L226 Difference]: Without dead ends: 411 [2019-10-13 23:03:50,265 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 [2019-10-13 23:03:50,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2019-10-13 23:03:50,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2019-10-13 23:03:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2019-10-13 23:03:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 617 transitions. [2019-10-13 23:03:50,401 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 617 transitions. Word has length 92 [2019-10-13 23:03:50,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:50,403 INFO L462 AbstractCegarLoop]: Abstraction has 411 states and 617 transitions. [2019-10-13 23:03:50,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:03:50,404 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 617 transitions. [2019-10-13 23:03:50,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 23:03:50,412 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:50,412 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 23:03:50,413 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:50,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:50,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2016967492, now seen corresponding path program 1 times [2019-10-13 23:03:50,413 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:50,414 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684914600] [2019-10-13 23:03:50,414 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:50,414 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:50,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:50,697 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 23:03:50,698 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684914600] [2019-10-13 23:03:50,698 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:50,698 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:50,699 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545617019] [2019-10-13 23:03:50,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:50,701 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:50,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:50,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:50,702 INFO L87 Difference]: Start difference. First operand 411 states and 617 transitions. Second operand 8 states. [2019-10-13 23:03:50,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:50,809 INFO L93 Difference]: Finished difference Result 819 states and 1261 transitions. [2019-10-13 23:03:50,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:50,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-10-13 23:03:50,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:50,815 INFO L225 Difference]: With dead ends: 819 [2019-10-13 23:03:50,816 INFO L226 Difference]: Without dead ends: 450 [2019-10-13 23:03:50,820 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:50,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2019-10-13 23:03:50,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 415. [2019-10-13 23:03:50,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2019-10-13 23:03:50,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 621 transitions. [2019-10-13 23:03:50,871 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 621 transitions. Word has length 93 [2019-10-13 23:03:50,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:50,874 INFO L462 AbstractCegarLoop]: Abstraction has 415 states and 621 transitions. [2019-10-13 23:03:50,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:50,874 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 621 transitions. [2019-10-13 23:03:50,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 23:03:50,881 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:50,882 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 23:03:50,882 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:50,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:50,883 INFO L82 PathProgramCache]: Analyzing trace with hash 514841222, now seen corresponding path program 1 times [2019-10-13 23:03:50,884 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:50,885 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537479706] [2019-10-13 23:03:50,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:50,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:50,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:51,176 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 23:03:51,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537479706] [2019-10-13 23:03:51,178 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:51,178 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:51,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689553664] [2019-10-13 23:03:51,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:51,181 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:51,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:51,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:51,182 INFO L87 Difference]: Start difference. First operand 415 states and 621 transitions. Second operand 7 states. [2019-10-13 23:03:54,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:54,736 INFO L93 Difference]: Finished difference Result 1276 states and 1972 transitions. [2019-10-13 23:03:54,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 23:03:54,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-10-13 23:03:54,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:54,744 INFO L225 Difference]: With dead ends: 1276 [2019-10-13 23:03:54,744 INFO L226 Difference]: Without dead ends: 903 [2019-10-13 23:03:54,747 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:03:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2019-10-13 23:03:54,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 876. [2019-10-13 23:03:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2019-10-13 23:03:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1357 transitions. [2019-10-13 23:03:54,832 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1357 transitions. Word has length 97 [2019-10-13 23:03:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:54,833 INFO L462 AbstractCegarLoop]: Abstraction has 876 states and 1357 transitions. [2019-10-13 23:03:54,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1357 transitions. [2019-10-13 23:03:54,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 23:03:54,840 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:54,841 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] [2019-10-13 23:03:54,841 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:54,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:54,841 INFO L82 PathProgramCache]: Analyzing trace with hash -210555956, now seen corresponding path program 1 times [2019-10-13 23:03:54,842 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:54,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255100061] [2019-10-13 23:03:54,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:54,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:54,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:55,022 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 23:03:55,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255100061] [2019-10-13 23:03:55,022 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:55,023 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:03:55,023 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74588014] [2019-10-13 23:03:55,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:03:55,024 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:55,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:03:55,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:03:55,024 INFO L87 Difference]: Start difference. First operand 876 states and 1357 transitions. Second operand 5 states. [2019-10-13 23:03:55,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:55,113 INFO L93 Difference]: Finished difference Result 1386 states and 2160 transitions. [2019-10-13 23:03:55,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:55,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2019-10-13 23:03:55,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:55,122 INFO L225 Difference]: With dead ends: 1386 [2019-10-13 23:03:55,122 INFO L226 Difference]: Without dead ends: 898 [2019-10-13 23:03:55,125 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 [2019-10-13 23:03:55,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2019-10-13 23:03:55,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 888. [2019-10-13 23:03:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2019-10-13 23:03:55,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1372 transitions. [2019-10-13 23:03:55,183 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1372 transitions. Word has length 101 [2019-10-13 23:03:55,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:55,185 INFO L462 AbstractCegarLoop]: Abstraction has 888 states and 1372 transitions. [2019-10-13 23:03:55,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:03:55,186 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1372 transitions. [2019-10-13 23:03:55,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 23:03:55,188 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:55,189 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] [2019-10-13 23:03:55,189 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:55,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:55,189 INFO L82 PathProgramCache]: Analyzing trace with hash -184459996, now seen corresponding path program 1 times [2019-10-13 23:03:55,190 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:55,190 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780588134] [2019-10-13 23:03:55,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:55,191 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:55,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:55,421 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 23:03:55,422 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780588134] [2019-10-13 23:03:55,422 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:55,422 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:55,422 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564948908] [2019-10-13 23:03:55,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:55,423 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:55,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:55,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:55,424 INFO L87 Difference]: Start difference. First operand 888 states and 1372 transitions. Second operand 8 states. [2019-10-13 23:03:58,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:58,551 INFO L93 Difference]: Finished difference Result 1881 states and 2911 transitions. [2019-10-13 23:03:58,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:58,552 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2019-10-13 23:03:58,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:58,561 INFO L225 Difference]: With dead ends: 1881 [2019-10-13 23:03:58,561 INFO L226 Difference]: Without dead ends: 1285 [2019-10-13 23:03:58,564 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:58,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2019-10-13 23:03:58,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1235. [2019-10-13 23:03:58,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2019-10-13 23:03:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1866 transitions. [2019-10-13 23:03:58,630 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1866 transitions. Word has length 105 [2019-10-13 23:03:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:58,631 INFO L462 AbstractCegarLoop]: Abstraction has 1235 states and 1866 transitions. [2019-10-13 23:03:58,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1866 transitions. [2019-10-13 23:03:58,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 23:03:58,633 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:58,634 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] [2019-10-13 23:03:58,634 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:58,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:58,634 INFO L82 PathProgramCache]: Analyzing trace with hash -77137945, now seen corresponding path program 1 times [2019-10-13 23:03:58,635 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:58,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050139837] [2019-10-13 23:03:58,635 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:58,635 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:58,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:58,771 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 23:03:58,771 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050139837] [2019-10-13 23:03:58,772 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:58,772 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:58,772 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102712546] [2019-10-13 23:03:58,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:58,773 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:58,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:58,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:58,774 INFO L87 Difference]: Start difference. First operand 1235 states and 1866 transitions. Second operand 7 states. [2019-10-13 23:03:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:59,034 INFO L93 Difference]: Finished difference Result 2322 states and 3593 transitions. [2019-10-13 23:03:59,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:03:59,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2019-10-13 23:03:59,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:59,044 INFO L225 Difference]: With dead ends: 2322 [2019-10-13 23:03:59,044 INFO L226 Difference]: Without dead ends: 1235 [2019-10-13 23:03:59,050 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 [2019-10-13 23:03:59,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2019-10-13 23:03:59,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1235. [2019-10-13 23:03:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2019-10-13 23:03:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1834 transitions. [2019-10-13 23:03:59,183 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1834 transitions. Word has length 108 [2019-10-13 23:03:59,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:59,184 INFO L462 AbstractCegarLoop]: Abstraction has 1235 states and 1834 transitions. [2019-10-13 23:03:59,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:59,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1834 transitions. [2019-10-13 23:03:59,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-13 23:03:59,190 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:59,190 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] [2019-10-13 23:03:59,190 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:59,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:59,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1803980195, now seen corresponding path program 1 times [2019-10-13 23:03:59,191 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:59,191 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460835264] [2019-10-13 23:03:59,191 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:59,191 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:59,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:03:59,343 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460835264] [2019-10-13 23:03:59,343 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:59,344 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:59,344 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484847444] [2019-10-13 23:03:59,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:59,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:59,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:59,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:59,345 INFO L87 Difference]: Start difference. First operand 1235 states and 1834 transitions. Second operand 7 states. [2019-10-13 23:04:02,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:02,269 INFO L93 Difference]: Finished difference Result 2191 states and 3263 transitions. [2019-10-13 23:04:02,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:04:02,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-10-13 23:04:02,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:02,280 INFO L225 Difference]: With dead ends: 2191 [2019-10-13 23:04:02,280 INFO L226 Difference]: Without dead ends: 1305 [2019-10-13 23:04:02,290 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:04:02,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2019-10-13 23:04:02,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1262. [2019-10-13 23:04:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1262 states. [2019-10-13 23:04:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1868 transitions. [2019-10-13 23:04:02,422 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1868 transitions. Word has length 110 [2019-10-13 23:04:02,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:02,423 INFO L462 AbstractCegarLoop]: Abstraction has 1262 states and 1868 transitions. [2019-10-13 23:04:02,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:02,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1868 transitions. [2019-10-13 23:04:02,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:04:02,427 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:02,428 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] [2019-10-13 23:04:02,428 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:02,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:02,429 INFO L82 PathProgramCache]: Analyzing trace with hash 699040819, now seen corresponding path program 1 times [2019-10-13 23:04:02,429 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:02,430 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127829136] [2019-10-13 23:04:02,430 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:02,430 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:02,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:02,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:04:02,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127829136] [2019-10-13 23:04:02,660 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:02,660 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:02,661 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006561521] [2019-10-13 23:04:02,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:02,661 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:02,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:02,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:02,662 INFO L87 Difference]: Start difference. First operand 1262 states and 1868 transitions. Second operand 4 states. [2019-10-13 23:04:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:04,649 INFO L93 Difference]: Finished difference Result 3811 states and 5777 transitions. [2019-10-13 23:04:04,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:04,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-13 23:04:04,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:04,670 INFO L225 Difference]: With dead ends: 3811 [2019-10-13 23:04:04,671 INFO L226 Difference]: Without dead ends: 2591 [2019-10-13 23:04:04,679 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 [2019-10-13 23:04:04,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2019-10-13 23:04:04,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2446. [2019-10-13 23:04:04,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2446 states. [2019-10-13 23:04:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 3682 transitions. [2019-10-13 23:04:04,821 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 3682 transitions. Word has length 117 [2019-10-13 23:04:04,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:04,827 INFO L462 AbstractCegarLoop]: Abstraction has 2446 states and 3682 transitions. [2019-10-13 23:04:04,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:04,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 3682 transitions. [2019-10-13 23:04:04,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:04:04,830 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:04,830 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] [2019-10-13 23:04:04,831 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:04,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:04,831 INFO L82 PathProgramCache]: Analyzing trace with hash 194148701, now seen corresponding path program 1 times [2019-10-13 23:04:04,831 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:04,832 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111673259] [2019-10-13 23:04:04,832 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:04,832 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:04,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:04:05,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111673259] [2019-10-13 23:04:05,009 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:05,009 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:05,010 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592023318] [2019-10-13 23:04:05,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:05,011 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:05,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:05,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:05,012 INFO L87 Difference]: Start difference. First operand 2446 states and 3682 transitions. Second operand 4 states. [2019-10-13 23:04:06,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:06,684 INFO L93 Difference]: Finished difference Result 7285 states and 11223 transitions. [2019-10-13 23:04:06,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:06,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 23:04:06,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:06,723 INFO L225 Difference]: With dead ends: 7285 [2019-10-13 23:04:06,723 INFO L226 Difference]: Without dead ends: 4882 [2019-10-13 23:04:06,737 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 [2019-10-13 23:04:06,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4882 states. [2019-10-13 23:04:07,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4882 to 4704. [2019-10-13 23:04:07,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4704 states. [2019-10-13 23:04:07,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4704 states to 4704 states and 7176 transitions. [2019-10-13 23:04:07,024 INFO L78 Accepts]: Start accepts. Automaton has 4704 states and 7176 transitions. Word has length 118 [2019-10-13 23:04:07,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:07,024 INFO L462 AbstractCegarLoop]: Abstraction has 4704 states and 7176 transitions. [2019-10-13 23:04:07,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:07,024 INFO L276 IsEmpty]: Start isEmpty. Operand 4704 states and 7176 transitions. [2019-10-13 23:04:07,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 23:04:07,028 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:07,028 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] [2019-10-13 23:04:07,028 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:07,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:07,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2085775840, now seen corresponding path program 1 times [2019-10-13 23:04:07,029 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:07,029 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816669373] [2019-10-13 23:04:07,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:07,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:07,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 23:04:07,198 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816669373] [2019-10-13 23:04:07,199 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:07,199 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:07,199 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844474975] [2019-10-13 23:04:07,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:07,200 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:07,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:07,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:07,201 INFO L87 Difference]: Start difference. First operand 4704 states and 7176 transitions. Second operand 4 states. [2019-10-13 23:04:09,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:09,416 INFO L93 Difference]: Finished difference Result 14141 states and 22307 transitions. [2019-10-13 23:04:09,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:09,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-10-13 23:04:09,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:09,516 INFO L225 Difference]: With dead ends: 14141 [2019-10-13 23:04:09,516 INFO L226 Difference]: Without dead ends: 9482 [2019-10-13 23:04:09,562 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 [2019-10-13 23:04:09,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9482 states. [2019-10-13 23:04:10,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9482 to 9239. [2019-10-13 23:04:10,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9239 states. [2019-10-13 23:04:10,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9239 states to 9239 states and 14382 transitions. [2019-10-13 23:04:10,354 INFO L78 Accepts]: Start accepts. Automaton has 9239 states and 14382 transitions. Word has length 116 [2019-10-13 23:04:10,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:10,355 INFO L462 AbstractCegarLoop]: Abstraction has 9239 states and 14382 transitions. [2019-10-13 23:04:10,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 9239 states and 14382 transitions. [2019-10-13 23:04:10,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:04:10,359 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:10,359 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:10,360 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:10,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:10,360 INFO L82 PathProgramCache]: Analyzing trace with hash 233269204, now seen corresponding path program 1 times [2019-10-13 23:04:10,360 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:10,361 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060819932] [2019-10-13 23:04:10,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:10,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:10,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 23:04:10,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060819932] [2019-10-13 23:04:10,568 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:10,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:10,569 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170616494] [2019-10-13 23:04:10,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:10,570 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:10,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:10,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:10,571 INFO L87 Difference]: Start difference. First operand 9239 states and 14382 transitions. Second operand 4 states. [2019-10-13 23:04:13,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:13,283 INFO L93 Difference]: Finished difference Result 27908 states and 45804 transitions. [2019-10-13 23:04:13,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:13,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-13 23:04:13,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:13,421 INFO L225 Difference]: With dead ends: 27908 [2019-10-13 23:04:13,421 INFO L226 Difference]: Without dead ends: 18718 [2019-10-13 23:04:13,476 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 [2019-10-13 23:04:13,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18718 states.