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_spec1_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:27,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:27,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:27,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:27,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:27,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:27,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:27,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:27,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:27,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:27,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:27,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:27,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:27,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:27,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:27,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:27,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:27,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:27,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:27,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:27,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:27,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:27,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:27,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:27,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:27,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:27,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:27,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:27,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:27,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:27,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:27,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:27,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:27,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:27,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:27,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:27,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:27,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:27,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:27,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:27,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:27,292 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 23:03:27,323 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:27,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:27,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:27,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:27,328 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:27,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:27,329 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:27,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:27,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:27,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:27,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:27,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:27,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:27,330 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:27,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:27,330 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:27,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:27,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:27,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:27,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:27,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:27,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:27,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:27,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:27,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:27,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:27,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:27,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:27,335 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 23:03:27,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:27,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:27,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:27,644 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:27,644 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:27,645 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product29.cil.c [2019-10-13 23:03:27,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218a3069a/ee91023fae5b45d0bf2cb10ad5c87585/FLAGb168cf32e [2019-10-13 23:03:28,332 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:28,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product29.cil.c [2019-10-13 23:03:28,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218a3069a/ee91023fae5b45d0bf2cb10ad5c87585/FLAGb168cf32e [2019-10-13 23:03:28,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218a3069a/ee91023fae5b45d0bf2cb10ad5c87585 [2019-10-13 23:03:28,551 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:28,553 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:28,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:28,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:28,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:28,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:28" (1/1) ... [2019-10-13 23:03:28,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9aa9a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:28, skipping insertion in model container [2019-10-13 23:03:28,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:28" (1/1) ... [2019-10-13 23:03:28,570 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:28,654 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:29,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:29,347 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:29,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:29,553 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:29,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:29 WrapperNode [2019-10-13 23:03:29,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:29,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:29,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:29,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:29,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:29" (1/1) ... [2019-10-13 23:03:29,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:29" (1/1) ... [2019-10-13 23:03:29,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:29" (1/1) ... [2019-10-13 23:03:29,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:29" (1/1) ... [2019-10-13 23:03:29,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:29" (1/1) ... [2019-10-13 23:03:29,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:29" (1/1) ... [2019-10-13 23:03:29,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:29" (1/1) ... [2019-10-13 23:03:29,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:29,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:29,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:29,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:29,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:29" (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 23:03:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:29,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:29,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:29,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:29,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:29,836 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:29,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:29,840 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:29,840 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:29,842 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:29,842 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:29,842 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:29,842 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:29,844 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:29,844 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:29,844 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:29,844 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:29,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:29,844 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:03:29,845 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:29,845 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:03:29,845 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:03:29,845 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:29,845 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:29,845 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:29,846 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:29,846 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:29,846 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:29,846 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:29,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:29,846 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:29,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:29,847 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:03:29,848 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:29,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:29,848 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:29,848 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:03:29,848 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:29,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:29,849 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:29,849 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:29,849 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:29,849 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:29,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:29,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:29,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:29,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:29,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:29,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:29,851 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:29,858 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:29,858 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:29,858 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:29,858 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:29,858 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:29,859 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:29,859 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:29,859 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:29,859 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:29,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:29,862 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:29,863 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:29,863 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:29,863 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:29,863 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:29,863 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:03:29,868 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:03:29,868 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:03:29,869 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:29,869 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:29,870 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:29,870 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:29,870 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:29,870 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:03:29,870 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:29,871 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:03:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:29,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:34,575 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:34,576 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:34,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:34 BoogieIcfgContainer [2019-10-13 23:03:34,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:34,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:34,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:34,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:34,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:28" (1/3) ... [2019-10-13 23:03:34,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2215c67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:34, skipping insertion in model container [2019-10-13 23:03:34,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:29" (2/3) ... [2019-10-13 23:03:34,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2215c67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:34, skipping insertion in model container [2019-10-13 23:03:34,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:34" (3/3) ... [2019-10-13 23:03:34,589 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product29.cil.c [2019-10-13 23:03:34,599 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:34,608 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:34,619 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:34,648 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:34,648 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:34,649 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:34,649 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:34,649 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:34,649 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:34,649 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:34,649 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:34,679 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states. [2019-10-13 23:03:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 23:03:34,704 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:34,705 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:34,707 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:34,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:34,713 INFO L82 PathProgramCache]: Analyzing trace with hash -385791060, now seen corresponding path program 1 times [2019-10-13 23:03:34,722 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:34,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105483366] [2019-10-13 23:03:34,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:34,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:34,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:35,299 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105483366] [2019-10-13 23:03:35,300 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:35,300 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:03:35,301 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232939949] [2019-10-13 23:03:35,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:03:35,306 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:35,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:03:35,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:35,322 INFO L87 Difference]: Start difference. First operand 575 states. Second operand 2 states. [2019-10-13 23:03:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:35,387 INFO L93 Difference]: Finished difference Result 484 states and 716 transitions. [2019-10-13 23:03:35,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:03:35,388 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 129 [2019-10-13 23:03:35,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:35,413 INFO L225 Difference]: With dead ends: 484 [2019-10-13 23:03:35,413 INFO L226 Difference]: Without dead ends: 450 [2019-10-13 23:03:35,417 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 23:03:35,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2019-10-13 23:03:35,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2019-10-13 23:03:35,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2019-10-13 23:03:35,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 665 transitions. [2019-10-13 23:03:35,509 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 665 transitions. Word has length 129 [2019-10-13 23:03:35,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:35,512 INFO L462 AbstractCegarLoop]: Abstraction has 450 states and 665 transitions. [2019-10-13 23:03:35,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:03:35,512 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 665 transitions. [2019-10-13 23:03:35,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 23:03:35,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:35,524 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:35,525 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:35,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:35,527 INFO L82 PathProgramCache]: Analyzing trace with hash -284613315, now seen corresponding path program 1 times [2019-10-13 23:03:35,527 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:35,528 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349959978] [2019-10-13 23:03:35,528 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:35,528 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:35,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:36,032 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349959978] [2019-10-13 23:03:36,032 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:36,032 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:03:36,032 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329929238] [2019-10-13 23:03:36,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:03:36,034 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:36,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:03:36,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:36,035 INFO L87 Difference]: Start difference. First operand 450 states and 665 transitions. Second operand 9 states. [2019-10-13 23:03:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:41,003 INFO L93 Difference]: Finished difference Result 1389 states and 2118 transitions. [2019-10-13 23:03:41,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 23:03:41,004 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2019-10-13 23:03:41,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:41,015 INFO L225 Difference]: With dead ends: 1389 [2019-10-13 23:03:41,015 INFO L226 Difference]: Without dead ends: 992 [2019-10-13 23:03:41,022 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-10-13 23:03:41,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2019-10-13 23:03:41,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 960. [2019-10-13 23:03:41,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2019-10-13 23:03:41,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1465 transitions. [2019-10-13 23:03:41,107 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1465 transitions. Word has length 130 [2019-10-13 23:03:41,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:41,108 INFO L462 AbstractCegarLoop]: Abstraction has 960 states and 1465 transitions. [2019-10-13 23:03:41,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:03:41,108 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1465 transitions. [2019-10-13 23:03:41,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 23:03:41,112 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:41,112 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:41,113 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:41,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:41,113 INFO L82 PathProgramCache]: Analyzing trace with hash 368331449, now seen corresponding path program 1 times [2019-10-13 23:03:41,113 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:41,114 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751744631] [2019-10-13 23:03:41,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:41,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:41,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:41,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751744631] [2019-10-13 23:03:41,365 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:41,365 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:41,365 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584367932] [2019-10-13 23:03:41,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:41,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:41,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:41,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:41,367 INFO L87 Difference]: Start difference. First operand 960 states and 1465 transitions. Second operand 7 states. [2019-10-13 23:03:41,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:41,498 INFO L93 Difference]: Finished difference Result 1529 states and 2350 transitions. [2019-10-13 23:03:41,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:03:41,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-10-13 23:03:41,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:41,511 INFO L225 Difference]: With dead ends: 1529 [2019-10-13 23:03:41,511 INFO L226 Difference]: Without dead ends: 997 [2019-10-13 23:03:41,515 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:41,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2019-10-13 23:03:41,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2019-10-13 23:03:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2019-10-13 23:03:41,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1495 transitions. [2019-10-13 23:03:41,605 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1495 transitions. Word has length 135 [2019-10-13 23:03:41,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:41,608 INFO L462 AbstractCegarLoop]: Abstraction has 981 states and 1495 transitions. [2019-10-13 23:03:41,609 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:41,609 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1495 transitions. [2019-10-13 23:03:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-13 23:03:41,619 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:41,619 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:41,619 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:41,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:41,620 INFO L82 PathProgramCache]: Analyzing trace with hash 139822543, now seen corresponding path program 1 times [2019-10-13 23:03:41,620 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:41,620 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340611755] [2019-10-13 23:03:41,620 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:41,621 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:41,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:41,824 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340611755] [2019-10-13 23:03:41,825 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:41,825 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:41,825 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476536509] [2019-10-13 23:03:41,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:41,826 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:41,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:41,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:41,827 INFO L87 Difference]: Start difference. First operand 981 states and 1495 transitions. Second operand 7 states. [2019-10-13 23:03:41,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:41,991 INFO L93 Difference]: Finished difference Result 1558 states and 2388 transitions. [2019-10-13 23:03:41,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:03:41,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2019-10-13 23:03:41,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:42,000 INFO L225 Difference]: With dead ends: 1558 [2019-10-13 23:03:42,000 INFO L226 Difference]: Without dead ends: 1012 [2019-10-13 23:03:42,004 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:42,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2019-10-13 23:03:42,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 984. [2019-10-13 23:03:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 984 states. [2019-10-13 23:03:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1498 transitions. [2019-10-13 23:03:42,075 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1498 transitions. Word has length 134 [2019-10-13 23:03:42,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:42,077 INFO L462 AbstractCegarLoop]: Abstraction has 984 states and 1498 transitions. [2019-10-13 23:03:42,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:42,077 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1498 transitions. [2019-10-13 23:03:42,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 23:03:42,083 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:42,083 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:42,084 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:42,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:42,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1098290023, now seen corresponding path program 1 times [2019-10-13 23:03:42,085 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:42,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866638154] [2019-10-13 23:03:42,086 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:42,086 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:42,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:42,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866638154] [2019-10-13 23:03:42,285 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:42,286 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:42,286 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597975019] [2019-10-13 23:03:42,287 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:42,287 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:42,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:42,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:42,288 INFO L87 Difference]: Start difference. First operand 984 states and 1498 transitions. Second operand 7 states. [2019-10-13 23:03:42,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:42,378 INFO L93 Difference]: Finished difference Result 1563 states and 2393 transitions. [2019-10-13 23:03:42,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:03:42,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-10-13 23:03:42,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:42,390 INFO L225 Difference]: With dead ends: 1563 [2019-10-13 23:03:42,390 INFO L226 Difference]: Without dead ends: 1015 [2019-10-13 23:03:42,393 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:42,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2019-10-13 23:03:42,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 987. [2019-10-13 23:03:42,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 987 states. [2019-10-13 23:03:42,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1501 transitions. [2019-10-13 23:03:42,458 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1501 transitions. Word has length 135 [2019-10-13 23:03:42,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:42,460 INFO L462 AbstractCegarLoop]: Abstraction has 987 states and 1501 transitions. [2019-10-13 23:03:42,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:42,462 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1501 transitions. [2019-10-13 23:03:42,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-13 23:03:42,472 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:42,472 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:42,473 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:42,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:42,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1049066241, now seen corresponding path program 1 times [2019-10-13 23:03:42,474 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:42,474 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310524149] [2019-10-13 23:03:42,474 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:42,474 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:42,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:42,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310524149] [2019-10-13 23:03:42,774 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:42,774 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:42,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027680112] [2019-10-13 23:03:42,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:42,775 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:42,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:42,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:42,776 INFO L87 Difference]: Start difference. First operand 987 states and 1501 transitions. Second operand 8 states. [2019-10-13 23:03:46,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:46,089 INFO L93 Difference]: Finished difference Result 2103 states and 3222 transitions. [2019-10-13 23:03:46,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:46,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2019-10-13 23:03:46,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:46,099 INFO L225 Difference]: With dead ends: 2103 [2019-10-13 23:03:46,099 INFO L226 Difference]: Without dead ends: 1428 [2019-10-13 23:03:46,103 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 23:03:46,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2019-10-13 23:03:46,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1378. [2019-10-13 23:03:46,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1378 states. [2019-10-13 23:03:46,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 2058 transitions. [2019-10-13 23:03:46,179 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 2058 transitions. Word has length 139 [2019-10-13 23:03:46,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:46,180 INFO L462 AbstractCegarLoop]: Abstraction has 1378 states and 2058 transitions. [2019-10-13 23:03:46,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:46,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 2058 transitions. [2019-10-13 23:03:46,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 23:03:46,184 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:46,184 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:46,185 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:46,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:46,185 INFO L82 PathProgramCache]: Analyzing trace with hash -236331617, now seen corresponding path program 1 times [2019-10-13 23:03:46,185 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:46,185 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830685426] [2019-10-13 23:03:46,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:46,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:46,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:46,429 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830685426] [2019-10-13 23:03:46,430 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:46,430 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:03:46,430 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430376546] [2019-10-13 23:03:46,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:03:46,431 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:46,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:03:46,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:46,432 INFO L87 Difference]: Start difference. First operand 1378 states and 2058 transitions. Second operand 9 states. [2019-10-13 23:03:46,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:46,730 INFO L93 Difference]: Finished difference Result 2672 states and 4095 transitions. [2019-10-13 23:03:46,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:03:46,731 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2019-10-13 23:03:46,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:46,741 INFO L225 Difference]: With dead ends: 2672 [2019-10-13 23:03:46,741 INFO L226 Difference]: Without dead ends: 1582 [2019-10-13 23:03:46,749 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:03:46,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2019-10-13 23:03:46,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2019-10-13 23:03:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2019-10-13 23:03:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2362 transitions. [2019-10-13 23:03:46,829 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2362 transitions. Word has length 141 [2019-10-13 23:03:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:46,830 INFO L462 AbstractCegarLoop]: Abstraction has 1582 states and 2362 transitions. [2019-10-13 23:03:46,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:03:46,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2362 transitions. [2019-10-13 23:03:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 23:03:46,833 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:46,834 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:46,834 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:46,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:46,834 INFO L82 PathProgramCache]: Analyzing trace with hash 359939417, now seen corresponding path program 1 times [2019-10-13 23:03:46,835 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:46,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880860412] [2019-10-13 23:03:46,835 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:46,835 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:46,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:47,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880860412] [2019-10-13 23:03:47,038 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:47,038 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:03:47,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209944255] [2019-10-13 23:03:47,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:03:47,039 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:47,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:03:47,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:03:47,040 INFO L87 Difference]: Start difference. First operand 1582 states and 2362 transitions. Second operand 6 states. [2019-10-13 23:03:50,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:50,952 INFO L93 Difference]: Finished difference Result 6443 states and 10010 transitions. [2019-10-13 23:03:50,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:03:50,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2019-10-13 23:03:50,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:50,989 INFO L225 Difference]: With dead ends: 6443 [2019-10-13 23:03:50,989 INFO L226 Difference]: Without dead ends: 4915 [2019-10-13 23:03:51,003 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:51,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4915 states. [2019-10-13 23:03:51,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4915 to 4552. [2019-10-13 23:03:51,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4552 states. [2019-10-13 23:03:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 6953 transitions. [2019-10-13 23:03:51,245 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 6953 transitions. Word has length 142 [2019-10-13 23:03:51,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:51,245 INFO L462 AbstractCegarLoop]: Abstraction has 4552 states and 6953 transitions. [2019-10-13 23:03:51,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:03:51,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 6953 transitions. [2019-10-13 23:03:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 23:03:51,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:51,253 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:51,254 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:51,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:51,254 INFO L82 PathProgramCache]: Analyzing trace with hash -2019885974, now seen corresponding path program 1 times [2019-10-13 23:03:51,254 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:51,254 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443601741] [2019-10-13 23:03:51,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:51,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:51,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:51,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443601741] [2019-10-13 23:03:51,474 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:51,475 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:51,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521006782] [2019-10-13 23:03:51,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:51,477 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:51,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:51,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:51,478 INFO L87 Difference]: Start difference. First operand 4552 states and 6953 transitions. Second operand 7 states. [2019-10-13 23:03:55,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:55,193 INFO L93 Difference]: Finished difference Result 8156 states and 12526 transitions. [2019-10-13 23:03:55,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:03:55,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2019-10-13 23:03:55,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:55,239 INFO L225 Difference]: With dead ends: 8156 [2019-10-13 23:03:55,239 INFO L226 Difference]: Without dead ends: 4722 [2019-10-13 23:03:55,273 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 23:03:55,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4722 states. [2019-10-13 23:03:55,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4722 to 4636. [2019-10-13 23:03:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4636 states. [2019-10-13 23:03:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 7059 transitions. [2019-10-13 23:03:55,841 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 7059 transitions. Word has length 143 [2019-10-13 23:03:55,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:55,842 INFO L462 AbstractCegarLoop]: Abstraction has 4636 states and 7059 transitions. [2019-10-13 23:03:55,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 7059 transitions. [2019-10-13 23:03:55,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 23:03:55,849 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:55,849 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:55,850 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:55,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:55,850 INFO L82 PathProgramCache]: Analyzing trace with hash -641855812, now seen corresponding path program 1 times [2019-10-13 23:03:55,850 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:55,851 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619795060] [2019-10-13 23:03:55,851 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:55,851 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:55,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:03:56,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619795060] [2019-10-13 23:03:56,362 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:56,362 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:03:56,363 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177715318] [2019-10-13 23:03:56,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:03:56,368 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:56,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:03:56,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:56,369 INFO L87 Difference]: Start difference. First operand 4636 states and 7059 transitions. Second operand 9 states.