/usr/bin/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_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:09:58,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:09:58,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:09:58,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:09:58,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:09:58,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:09:58,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:09:58,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:09:58,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:09:58,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:09:58,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:09:58,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:09:58,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:09:58,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:09:58,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:09:58,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:09:58,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:09:58,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:09:58,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:09:58,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:09:58,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:09:58,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:09:58,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:09:58,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:09:58,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:09:58,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:09:58,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:09:58,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:09:58,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:09:58,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:09:58,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:09:58,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:09:58,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:09:58,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:09:58,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:09:58,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:09:58,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:09:58,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:09:58,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:09:58,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:09:58,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:09:58,268 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 [2019-11-07 04:09:58,284 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:09:58,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:09:58,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:09:58,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:09:58,288 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:09:58,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:09:58,288 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:09:58,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:09:58,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:09:58,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:09:58,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:09:58,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:09:58,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:09:58,289 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:09:58,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:09:58,291 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:09:58,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:09:58,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:09:58,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:09:58,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:09:58,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:09:58,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:09:58,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:09:58,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:09:58,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:09:58,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:09:58,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:09:58,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:09:58,293 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 [2019-11-07 04:09:58,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:09:58,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:09:58,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:09:58,597 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:09:58,597 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:09:58,598 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product09.cil.c [2019-11-07 04:09:58,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96265b414/281095bbbbc8442082def5c7a649bc33/FLAGf092255fb [2019-11-07 04:09:59,360 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:09:59,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product09.cil.c [2019-11-07 04:09:59,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96265b414/281095bbbbc8442082def5c7a649bc33/FLAGf092255fb [2019-11-07 04:09:59,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96265b414/281095bbbbc8442082def5c7a649bc33 [2019-11-07 04:09:59,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:09:59,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:09:59,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:09:59,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:09:59,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:09:59,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:09:59" (1/1) ... [2019-11-07 04:09:59,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5178d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:59, skipping insertion in model container [2019-11-07 04:09:59,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:09:59" (1/1) ... [2019-11-07 04:09:59,553 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:09:59,626 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:10:00,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:10:00,400 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:10:00,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:10:00,585 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:10:00,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:00 WrapperNode [2019-11-07 04:10:00,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:10:00,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:10:00,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:10:00,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:10:00,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:00" (1/1) ... [2019-11-07 04:10:00,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:00" (1/1) ... [2019-11-07 04:10:00,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:00" (1/1) ... [2019-11-07 04:10:00,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:00" (1/1) ... [2019-11-07 04:10:00,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:00" (1/1) ... [2019-11-07 04:10:00,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:00" (1/1) ... [2019-11-07 04:10:00,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:00" (1/1) ... [2019-11-07 04:10:00,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:10:00,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:10:00,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:10:00,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:10:00,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:10:00,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:10:00,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:10:00,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:10:00,823 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:10:00,823 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:10:00,823 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:10:00,823 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:10:00,824 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:10:00,824 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:10:00,824 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:10:00,824 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:10:00,824 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:10:00,825 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:10:00,825 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:10:00,825 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:10:00,825 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:10:00,826 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:10:00,826 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:10:00,826 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:10:00,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:10:00,826 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:10:00,827 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:10:00,827 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:10:00,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:10:00,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:10:00,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:10:00,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:10:00,828 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:10:00,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:10:00,828 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:10:00,829 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:10:00,829 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:10:00,829 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:10:00,829 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:10:00,829 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:10:00,829 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:10:00,830 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:10:00,830 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:10:00,830 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:10:00,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:10:00,830 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:10:00,831 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:10:00,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:10:00,831 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:10:00,831 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:10:00,831 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:10:00,832 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:10:00,832 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:10:00,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:10:00,832 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:10:00,832 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:10:00,833 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:10:00,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:10:00,833 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:10:00,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:10:00,833 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:10:00,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:10:00,834 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:10:00,834 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:10:00,834 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:10:00,834 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:10:00,834 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:10:00,835 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:10:00,835 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:10:00,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:10:00,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:10:00,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:10:00,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:10:00,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:10:00,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:10:00,836 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:10:00,836 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:10:00,837 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:10:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:10:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:10:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:10:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:10:00,838 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:10:00,838 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:10:00,838 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:10:00,838 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:10:00,838 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:10:00,839 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:10:00,839 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:10:00,839 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:10:00,839 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:10:00,839 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:10:00,840 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:10:00,840 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:10:00,840 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:10:00,840 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:10:00,840 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:10:00,840 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:10:00,841 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:10:00,841 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:10:00,841 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:10:00,841 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:10:00,841 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:10:00,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:10:00,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:10:00,842 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:10:00,842 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:10:00,842 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:10:00,842 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:10:00,843 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:10:00,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:10:00,843 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:10:00,843 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:10:00,843 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:10:00,844 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:10:00,844 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:10:00,844 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:10:00,844 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:10:00,844 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:10:00,844 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:10:00,845 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:10:00,845 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:10:00,845 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:10:00,845 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:10:00,845 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:10:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:10:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:10:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:10:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:10:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:10:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:10:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:10:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:10:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:10:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:10:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:10:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:10:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:10:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:10:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:10:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:10:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:10:00,849 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:10:00,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:10:00,849 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:10:00,849 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:10:00,849 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:10:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:10:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:10:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:10:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:10:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:10:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:10:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:10:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:10:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:10:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:10:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:10:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:10:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:10:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:10:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:10:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:10:00,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:10:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:10:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:10:05,729 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:10:05,729 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:10:05,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:05 BoogieIcfgContainer [2019-11-07 04:10:05,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:10:05,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:10:05,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:10:05,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:10:05,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:09:59" (1/3) ... [2019-11-07 04:10:05,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315f4106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:05, skipping insertion in model container [2019-11-07 04:10:05,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:00" (2/3) ... [2019-11-07 04:10:05,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315f4106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:05, skipping insertion in model container [2019-11-07 04:10:05,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:05" (3/3) ... [2019-11-07 04:10:05,741 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product09.cil.c [2019-11-07 04:10:05,751 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:10:05,762 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:10:05,774 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:10:05,815 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:10:05,815 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:10:05,816 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:10:05,816 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:10:05,816 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:10:05,816 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:10:05,816 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:10:05,816 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:10:05,851 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2019-11-07 04:10:05,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 04:10:05,886 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:05,887 INFO L410 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] [2019-11-07 04:10:05,890 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:05,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:05,896 INFO L82 PathProgramCache]: Analyzing trace with hash -197342042, now seen corresponding path program 1 times [2019-11-07 04:10:05,906 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:05,907 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118122097] [2019-11-07 04:10:05,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:10:06,518 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118122097] [2019-11-07 04:10:06,519 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:06,519 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:10:06,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224404607] [2019-11-07 04:10:06,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:10:06,528 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:06,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:10:06,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:10:06,545 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 2 states. [2019-11-07 04:10:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:06,613 INFO L93 Difference]: Finished difference Result 440 states and 662 transitions. [2019-11-07 04:10:06,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:10:06,615 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 92 [2019-11-07 04:10:06,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:06,650 INFO L225 Difference]: With dead ends: 440 [2019-11-07 04:10:06,650 INFO L226 Difference]: Without dead ends: 406 [2019-11-07 04:10:06,658 INFO L630 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 [2019-11-07 04:10:06,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2019-11-07 04:10:06,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2019-11-07 04:10:06,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2019-11-07 04:10:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 611 transitions. [2019-11-07 04:10:06,805 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 611 transitions. Word has length 92 [2019-11-07 04:10:06,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:06,808 INFO L462 AbstractCegarLoop]: Abstraction has 406 states and 611 transitions. [2019-11-07 04:10:06,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:10:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 611 transitions. [2019-11-07 04:10:06,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-07 04:10:06,816 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:06,816 INFO L410 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] [2019-11-07 04:10:06,817 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:06,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:06,817 INFO L82 PathProgramCache]: Analyzing trace with hash 194023073, now seen corresponding path program 1 times [2019-11-07 04:10:06,818 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:06,818 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976279770] [2019-11-07 04:10:06,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:10:07,183 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976279770] [2019-11-07 04:10:07,184 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:07,184 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 04:10:07,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802260423] [2019-11-07 04:10:07,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:10:07,188 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:07,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:10:07,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:10:07,189 INFO L87 Difference]: Start difference. First operand 406 states and 611 transitions. Second operand 8 states. [2019-11-07 04:10:07,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:07,399 INFO L93 Difference]: Finished difference Result 809 states and 1249 transitions. [2019-11-07 04:10:07,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:10:07,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-11-07 04:10:07,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:07,408 INFO L225 Difference]: With dead ends: 809 [2019-11-07 04:10:07,408 INFO L226 Difference]: Without dead ends: 445 [2019-11-07 04:10:07,420 INFO L630 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 [2019-11-07 04:10:07,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-11-07 04:10:07,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 410. [2019-11-07 04:10:07,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2019-11-07 04:10:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 615 transitions. [2019-11-07 04:10:07,463 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 615 transitions. Word has length 93 [2019-11-07 04:10:07,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:07,465 INFO L462 AbstractCegarLoop]: Abstraction has 410 states and 615 transitions. [2019-11-07 04:10:07,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:10:07,466 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 615 transitions. [2019-11-07 04:10:07,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 04:10:07,475 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:07,478 INFO L410 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] [2019-11-07 04:10:07,478 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:07,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:07,479 INFO L82 PathProgramCache]: Analyzing trace with hash -131924270, now seen corresponding path program 1 times [2019-11-07 04:10:07,480 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:07,480 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897583447] [2019-11-07 04:10:07,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:10:07,766 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897583447] [2019-11-07 04:10:07,767 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:07,767 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:10:07,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481780102] [2019-11-07 04:10:07,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:10:07,768 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:07,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:10:07,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:10:07,769 INFO L87 Difference]: Start difference. First operand 410 states and 615 transitions. Second operand 7 states. [2019-11-07 04:10:11,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:11,298 INFO L93 Difference]: Finished difference Result 1261 states and 1954 transitions. [2019-11-07 04:10:11,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 04:10:11,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-11-07 04:10:11,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:11,315 INFO L225 Difference]: With dead ends: 1261 [2019-11-07 04:10:11,315 INFO L226 Difference]: Without dead ends: 893 [2019-11-07 04:10:11,320 INFO L630 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 [2019-11-07 04:10:11,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2019-11-07 04:10:11,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 866. [2019-11-07 04:10:11,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2019-11-07 04:10:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1345 transitions. [2019-11-07 04:10:11,398 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1345 transitions. Word has length 97 [2019-11-07 04:10:11,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:11,399 INFO L462 AbstractCegarLoop]: Abstraction has 866 states and 1345 transitions. [2019-11-07 04:10:11,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:10:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1345 transitions. [2019-11-07 04:10:11,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-11-07 04:10:11,406 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:11,409 INFO L410 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] [2019-11-07 04:10:11,409 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:11,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:11,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1573335478, now seen corresponding path program 1 times [2019-11-07 04:10:11,410 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:11,410 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378644044] [2019-11-07 04:10:11,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:10:11,577 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378644044] [2019-11-07 04:10:11,577 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:11,578 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:10:11,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117714011] [2019-11-07 04:10:11,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:10:11,579 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:11,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:10:11,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:11,580 INFO L87 Difference]: Start difference. First operand 866 states and 1345 transitions. Second operand 5 states. [2019-11-07 04:10:11,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:11,662 INFO L93 Difference]: Finished difference Result 1371 states and 2142 transitions. [2019-11-07 04:10:11,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:11,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2019-11-07 04:10:11,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:11,673 INFO L225 Difference]: With dead ends: 1371 [2019-11-07 04:10:11,673 INFO L226 Difference]: Without dead ends: 888 [2019-11-07 04:10:11,676 INFO L630 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 [2019-11-07 04:10:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2019-11-07 04:10:11,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 878. [2019-11-07 04:10:11,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2019-11-07 04:10:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1360 transitions. [2019-11-07 04:10:11,734 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1360 transitions. Word has length 101 [2019-11-07 04:10:11,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:11,736 INFO L462 AbstractCegarLoop]: Abstraction has 878 states and 1360 transitions. [2019-11-07 04:10:11,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:10:11,736 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1360 transitions. [2019-11-07 04:10:11,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-07 04:10:11,738 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:11,739 INFO L410 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] [2019-11-07 04:10:11,740 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:11,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:11,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1632653326, now seen corresponding path program 1 times [2019-11-07 04:10:11,741 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:11,741 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145005907] [2019-11-07 04:10:11,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:10:12,138 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145005907] [2019-11-07 04:10:12,138 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:12,138 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 04:10:12,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187185725] [2019-11-07 04:10:12,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:10:12,141 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:12,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:10:12,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:10:12,142 INFO L87 Difference]: Start difference. First operand 878 states and 1360 transitions. Second operand 8 states. [2019-11-07 04:10:15,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:15,637 INFO L93 Difference]: Finished difference Result 1861 states and 2887 transitions. [2019-11-07 04:10:15,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:10:15,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2019-11-07 04:10:15,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:15,648 INFO L225 Difference]: With dead ends: 1861 [2019-11-07 04:10:15,648 INFO L226 Difference]: Without dead ends: 1270 [2019-11-07 04:10:15,652 INFO L630 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 [2019-11-07 04:10:15,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2019-11-07 04:10:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1220. [2019-11-07 04:10:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2019-11-07 04:10:15,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1848 transitions. [2019-11-07 04:10:15,714 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1848 transitions. Word has length 105 [2019-11-07 04:10:15,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:15,715 INFO L462 AbstractCegarLoop]: Abstraction has 1220 states and 1848 transitions. [2019-11-07 04:10:15,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:10:15,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1848 transitions. [2019-11-07 04:10:15,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-07 04:10:15,718 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:15,718 INFO L410 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] [2019-11-07 04:10:15,719 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:15,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:15,719 INFO L82 PathProgramCache]: Analyzing trace with hash -421968763, now seen corresponding path program 1 times [2019-11-07 04:10:15,719 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:15,720 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332910460] [2019-11-07 04:10:15,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:10:15,933 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332910460] [2019-11-07 04:10:15,933 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:15,933 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:10:15,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709972717] [2019-11-07 04:10:15,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:10:15,934 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:15,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:10:15,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:10:15,935 INFO L87 Difference]: Start difference. First operand 1220 states and 1848 transitions. Second operand 7 states. [2019-11-07 04:10:16,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:16,138 INFO L93 Difference]: Finished difference Result 2297 states and 3563 transitions. [2019-11-07 04:10:16,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:10:16,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2019-11-07 04:10:16,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:16,150 INFO L225 Difference]: With dead ends: 2297 [2019-11-07 04:10:16,151 INFO L226 Difference]: Without dead ends: 1220 [2019-11-07 04:10:16,157 INFO L630 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 [2019-11-07 04:10:16,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2019-11-07 04:10:16,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2019-11-07 04:10:16,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2019-11-07 04:10:16,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1816 transitions. [2019-11-07 04:10:16,239 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1816 transitions. Word has length 108 [2019-11-07 04:10:16,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:16,240 INFO L462 AbstractCegarLoop]: Abstraction has 1220 states and 1816 transitions. [2019-11-07 04:10:16,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:10:16,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1816 transitions. [2019-11-07 04:10:16,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-07 04:10:16,247 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:16,247 INFO L410 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] [2019-11-07 04:10:16,247 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:16,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:16,248 INFO L82 PathProgramCache]: Analyzing trace with hash 194645655, now seen corresponding path program 1 times [2019-11-07 04:10:16,248 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:16,248 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808634872] [2019-11-07 04:10:16,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:16,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:10:16,453 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808634872] [2019-11-07 04:10:16,453 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:16,453 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:10:16,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251288938] [2019-11-07 04:10:16,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:10:16,454 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:16,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:10:16,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:10:16,455 INFO L87 Difference]: Start difference. First operand 1220 states and 1816 transitions. Second operand 7 states. [2019-11-07 04:10:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:19,899 INFO L93 Difference]: Finished difference Result 2166 states and 3233 transitions. [2019-11-07 04:10:19,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:10:19,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-11-07 04:10:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:19,912 INFO L225 Difference]: With dead ends: 2166 [2019-11-07 04:10:19,912 INFO L226 Difference]: Without dead ends: 1290 [2019-11-07 04:10:19,918 INFO L630 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 [2019-11-07 04:10:19,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2019-11-07 04:10:20,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1247. [2019-11-07 04:10:20,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2019-11-07 04:10:20,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1850 transitions. [2019-11-07 04:10:20,016 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1850 transitions. Word has length 110 [2019-11-07 04:10:20,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:20,018 INFO L462 AbstractCegarLoop]: Abstraction has 1247 states and 1850 transitions. [2019-11-07 04:10:20,018 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:10:20,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1850 transitions. [2019-11-07 04:10:20,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-07 04:10:20,022 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:20,023 INFO L410 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] [2019-11-07 04:10:20,023 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:20,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:20,024 INFO L82 PathProgramCache]: Analyzing trace with hash -784905419, now seen corresponding path program 1 times [2019-11-07 04:10:20,024 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:20,025 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219181600] [2019-11-07 04:10:20,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:10:20,220 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219181600] [2019-11-07 04:10:20,220 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:20,220 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:20,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135758872] [2019-11-07 04:10:20,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:20,222 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:20,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:20,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:20,224 INFO L87 Difference]: Start difference. First operand 1247 states and 1850 transitions. Second operand 4 states. [2019-11-07 04:10:21,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:21,824 INFO L93 Difference]: Finished difference Result 3781 states and 5741 transitions. [2019-11-07 04:10:21,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:21,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-11-07 04:10:21,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:21,844 INFO L225 Difference]: With dead ends: 3781 [2019-11-07 04:10:21,844 INFO L226 Difference]: Without dead ends: 2576 [2019-11-07 04:10:21,852 INFO L630 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 [2019-11-07 04:10:21,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2019-11-07 04:10:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2431. [2019-11-07 04:10:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2019-11-07 04:10:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3664 transitions. [2019-11-07 04:10:21,981 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3664 transitions. Word has length 117 [2019-11-07 04:10:21,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:21,982 INFO L462 AbstractCegarLoop]: Abstraction has 2431 states and 3664 transitions. [2019-11-07 04:10:21,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:21,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3664 transitions. [2019-11-07 04:10:21,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:10:21,985 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:21,986 INFO L410 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] [2019-11-07 04:10:21,986 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:21,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:21,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1436453714, now seen corresponding path program 1 times [2019-11-07 04:10:21,987 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:21,987 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210518484] [2019-11-07 04:10:21,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:10:22,127 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210518484] [2019-11-07 04:10:22,128 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:22,128 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:22,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761125343] [2019-11-07 04:10:22,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:22,130 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:22,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:22,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:22,130 INFO L87 Difference]: Start difference. First operand 2431 states and 3664 transitions. Second operand 4 states. [2019-11-07 04:10:23,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:23,903 INFO L93 Difference]: Finished difference Result 7255 states and 11187 transitions. [2019-11-07 04:10:23,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:23,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-11-07 04:10:23,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:23,935 INFO L225 Difference]: With dead ends: 7255 [2019-11-07 04:10:23,935 INFO L226 Difference]: Without dead ends: 4867 [2019-11-07 04:10:23,951 INFO L630 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 [2019-11-07 04:10:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2019-11-07 04:10:24,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 4689. [2019-11-07 04:10:24,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4689 states. [2019-11-07 04:10:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 7158 transitions. [2019-11-07 04:10:24,229 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 7158 transitions. Word has length 118 [2019-11-07 04:10:24,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:24,230 INFO L462 AbstractCegarLoop]: Abstraction has 4689 states and 7158 transitions. [2019-11-07 04:10:24,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 7158 transitions. [2019-11-07 04:10:24,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:10:24,235 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:24,235 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:24,236 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:24,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:24,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1579114007, now seen corresponding path program 1 times [2019-11-07 04:10:24,237 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:24,237 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27770903] [2019-11-07 04:10:24,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:24,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:10:24,397 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27770903] [2019-11-07 04:10:24,397 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:24,397 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:24,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716413361] [2019-11-07 04:10:24,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:24,398 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:24,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:24,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:24,399 INFO L87 Difference]: Start difference. First operand 4689 states and 7158 transitions. Second operand 4 states. [2019-11-07 04:10:26,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:26,199 INFO L93 Difference]: Finished difference Result 14111 states and 22271 transitions. [2019-11-07 04:10:26,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:26,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-11-07 04:10:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:26,268 INFO L225 Difference]: With dead ends: 14111 [2019-11-07 04:10:26,268 INFO L226 Difference]: Without dead ends: 9467 [2019-11-07 04:10:26,293 INFO L630 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 [2019-11-07 04:10:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2019-11-07 04:10:26,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 9224. [2019-11-07 04:10:26,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9224 states. [2019-11-07 04:10:27,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9224 states to 9224 states and 14364 transitions. [2019-11-07 04:10:27,017 INFO L78 Accepts]: Start accepts. Automaton has 9224 states and 14364 transitions. Word has length 119 [2019-11-07 04:10:27,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:27,017 INFO L462 AbstractCegarLoop]: Abstraction has 9224 states and 14364 transitions. [2019-11-07 04:10:27,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:27,018 INFO L276 IsEmpty]: Start isEmpty. Operand 9224 states and 14364 transitions. [2019-11-07 04:10:27,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:10:27,021 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:27,021 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:27,021 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:27,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:27,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1706619700, now seen corresponding path program 1 times [2019-11-07 04:10:27,022 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:27,022 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107247019] [2019-11-07 04:10:27,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:10:27,189 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107247019] [2019-11-07 04:10:27,189 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:27,190 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:27,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230496492] [2019-11-07 04:10:27,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:27,191 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:27,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:27,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:27,191 INFO L87 Difference]: Start difference. First operand 9224 states and 14364 transitions. Second operand 4 states.