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_spec3_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:38,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:38,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:38,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:38,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:38,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:38,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:38,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:38,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:38,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:38,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:38,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:38,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:38,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:38,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:38,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:38,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:38,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:38,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:38,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:38,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:38,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:38,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:38,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:38,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:38,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:38,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:38,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:38,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:38,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:38,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:38,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:38,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:38,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:38,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:38,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:38,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:38,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:38,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:38,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:38,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:38,929 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 23:04:38,948 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:38,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:38,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:38,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:38,950 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:38,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:38,950 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:38,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:38,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:38,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:38,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:38,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:38,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:38,952 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:38,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:38,952 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:38,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:38,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:38,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:38,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:38,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:38,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:38,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:38,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:38,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:38,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:38,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:38,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:38,955 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 23:04:39,251 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:39,266 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:39,269 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:39,271 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:39,271 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:39,272 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product11.cil.c [2019-10-13 23:04:39,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4837c4b93/49c17fb64af44024ba6da1f4237b1bac/FLAGff7957c64 [2019-10-13 23:04:40,042 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:40,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product11.cil.c [2019-10-13 23:04:40,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4837c4b93/49c17fb64af44024ba6da1f4237b1bac/FLAGff7957c64 [2019-10-13 23:04:40,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4837c4b93/49c17fb64af44024ba6da1f4237b1bac [2019-10-13 23:04:40,240 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:40,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:40,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:40,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:40,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:40,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:40" (1/1) ... [2019-10-13 23:04:40,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb33164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:40, skipping insertion in model container [2019-10-13 23:04:40,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:40" (1/1) ... [2019-10-13 23:04:40,265 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:40,355 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:41,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:41,126 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:41,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:41,344 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:41,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:41 WrapperNode [2019-10-13 23:04:41,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:41,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:41,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:41,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:41,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:41" (1/1) ... [2019-10-13 23:04:41,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:41" (1/1) ... [2019-10-13 23:04:41,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:41" (1/1) ... [2019-10-13 23:04:41,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:41" (1/1) ... [2019-10-13 23:04:41,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:41" (1/1) ... [2019-10-13 23:04:41,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:41" (1/1) ... [2019-10-13 23:04:41,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:41" (1/1) ... [2019-10-13 23:04:41,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:41,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:41,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:41,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:41,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:41" (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 23:04:41,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:41,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:41,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:41,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:41,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:41,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:41,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:41,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:41,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:41,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:41,650 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:41,651 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:41,652 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:41,652 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:41,652 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:41,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:41,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:41,655 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:41,657 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:41,659 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:41,659 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:41,659 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:41,659 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:41,660 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:41,660 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:41,660 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:41,661 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:41,661 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:41,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:41,661 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:41,661 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:41,662 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:41,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:41,662 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:41,662 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:41,662 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:41,663 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:41,663 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:41,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:41,663 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:41,663 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:41,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:41,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:41,665 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:41,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:41,666 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:41,666 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:41,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:41,666 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:41,666 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:41,666 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:41,667 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:41,667 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:41,667 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:41,668 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:41,668 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:41,668 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:04:41,668 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:04:41,669 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:41,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:41,669 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:41,669 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:41,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:41,670 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:41,670 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:41,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:41,670 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:41,670 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:41,671 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:41,671 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:41,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:41,703 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:41,703 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:04:41,703 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:04:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:46,597 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:46,597 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:46,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:46 BoogieIcfgContainer [2019-10-13 23:04:46,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:46,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:46,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:46,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:46,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:40" (1/3) ... [2019-10-13 23:04:46,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159ced44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:46, skipping insertion in model container [2019-10-13 23:04:46,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:41" (2/3) ... [2019-10-13 23:04:46,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159ced44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:46, skipping insertion in model container [2019-10-13 23:04:46,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:46" (3/3) ... [2019-10-13 23:04:46,608 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product11.cil.c [2019-10-13 23:04:46,619 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:46,629 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:46,642 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:46,676 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:46,676 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:46,676 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:46,676 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:46,676 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:46,677 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:46,677 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:46,677 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:46,714 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states. [2019-10-13 23:04:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:04:46,792 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:46,794 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:04:46,797 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:46,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:46,805 INFO L82 PathProgramCache]: Analyzing trace with hash 138633928, now seen corresponding path program 1 times [2019-10-13 23:04:46,814 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:46,815 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141390964] [2019-10-13 23:04:46,815 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:46,815 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:46,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:47,583 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 23:04:47,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141390964] [2019-10-13 23:04:47,584 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:47,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:47,585 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491122438] [2019-10-13 23:04:47,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:47,591 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:47,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:47,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:47,612 INFO L87 Difference]: Start difference. First operand 588 states. Second operand 7 states. [2019-10-13 23:04:50,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:50,430 INFO L93 Difference]: Finished difference Result 1754 states and 2733 transitions. [2019-10-13 23:04:50,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:04:50,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-13 23:04:50,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:50,465 INFO L225 Difference]: With dead ends: 1754 [2019-10-13 23:04:50,465 INFO L226 Difference]: Without dead ends: 1288 [2019-10-13 23:04:50,477 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:04:50,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2019-10-13 23:04:50,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1248. [2019-10-13 23:04:50,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2019-10-13 23:04:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1923 transitions. [2019-10-13 23:04:50,758 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1923 transitions. Word has length 119 [2019-10-13 23:04:50,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:50,760 INFO L462 AbstractCegarLoop]: Abstraction has 1248 states and 1923 transitions. [2019-10-13 23:04:50,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:50,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1923 transitions. [2019-10-13 23:04:50,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:04:50,774 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:50,774 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:04:50,775 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:50,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:50,776 INFO L82 PathProgramCache]: Analyzing trace with hash -306320997, now seen corresponding path program 1 times [2019-10-13 23:04:50,776 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:50,776 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049440383] [2019-10-13 23:04:50,777 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:50,777 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:50,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:51,137 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049440383] [2019-10-13 23:04:51,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581129088] [2019-10-13 23:04:51,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:04:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:51,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 2982 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:04:51,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:04:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:51,776 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:04:51,992 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 23:04:51,993 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:04:51,993 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-13 23:04:51,993 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137346952] [2019-10-13 23:04:51,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:04:51,995 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:51,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:04:51,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:52,000 INFO L87 Difference]: Start difference. First operand 1248 states and 1923 transitions. Second operand 3 states. [2019-10-13 23:04:52,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:52,166 INFO L93 Difference]: Finished difference Result 3516 states and 5546 transitions. [2019-10-13 23:04:52,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:04:52,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-13 23:04:52,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:52,190 INFO L225 Difference]: With dead ends: 3516 [2019-10-13 23:04:52,190 INFO L226 Difference]: Without dead ends: 2299 [2019-10-13 23:04:52,200 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:52,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2019-10-13 23:04:52,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2231. [2019-10-13 23:04:52,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2019-10-13 23:04:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 3466 transitions. [2019-10-13 23:04:52,378 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 3466 transitions. Word has length 118 [2019-10-13 23:04:52,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:52,384 INFO L462 AbstractCegarLoop]: Abstraction has 2231 states and 3466 transitions. [2019-10-13 23:04:52,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:04:52,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 3466 transitions. [2019-10-13 23:04:52,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:04:52,398 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:52,398 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:04:52,610 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:04:52,611 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:52,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:52,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1718735099, now seen corresponding path program 1 times [2019-10-13 23:04:52,612 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:52,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367214742] [2019-10-13 23:04:52,612 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:52,612 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:52,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:52,914 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367214742] [2019-10-13 23:04:52,914 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253417111] [2019-10-13 23:04:52,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:04:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:53,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:04:53,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:04:53,564 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:04:53,564 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:04:53,729 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 23:04:53,729 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:04:53,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-13 23:04:53,730 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651053504] [2019-10-13 23:04:53,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:53,732 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:53,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:53,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:04:53,734 INFO L87 Difference]: Start difference. First operand 2231 states and 3466 transitions. Second operand 4 states. [2019-10-13 23:04:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:53,905 INFO L93 Difference]: Finished difference Result 4313 states and 6775 transitions. [2019-10-13 23:04:53,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:04:53,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-13 23:04:53,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:53,923 INFO L225 Difference]: With dead ends: 4313 [2019-10-13 23:04:53,923 INFO L226 Difference]: Without dead ends: 2113 [2019-10-13 23:04:53,942 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:04:53,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2019-10-13 23:04:54,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2063. [2019-10-13 23:04:54,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2063 states. [2019-10-13 23:04:54,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 3177 transitions. [2019-10-13 23:04:54,096 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 3177 transitions. Word has length 120 [2019-10-13 23:04:54,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:54,098 INFO L462 AbstractCegarLoop]: Abstraction has 2063 states and 3177 transitions. [2019-10-13 23:04:54,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:54,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 3177 transitions. [2019-10-13 23:04:54,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:04:54,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:54,102 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:04:54,311 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:04:54,312 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:54,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:54,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1806161369, now seen corresponding path program 1 times [2019-10-13 23:04:54,313 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:54,313 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448182388] [2019-10-13 23:04:54,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:54,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:54,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:54,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448182388] [2019-10-13 23:04:54,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697254669] [2019-10-13 23:04:54,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:04:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:55,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:04:55,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:04:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:55,283 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:04:55,397 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 23:04:55,398 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:04:55,398 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-13 23:04:55,398 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950929638] [2019-10-13 23:04:55,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:04:55,399 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:55,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:04:55,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:55,400 INFO L87 Difference]: Start difference. First operand 2063 states and 3177 transitions. Second operand 3 states. [2019-10-13 23:04:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:55,608 INFO L93 Difference]: Finished difference Result 5144 states and 8069 transitions. [2019-10-13 23:04:55,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:04:55,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-13 23:04:55,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:55,640 INFO L225 Difference]: With dead ends: 5144 [2019-10-13 23:04:55,640 INFO L226 Difference]: Without dead ends: 3112 [2019-10-13 23:04:55,659 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:55,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2019-10-13 23:04:55,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 3027. [2019-10-13 23:04:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3027 states. [2019-10-13 23:04:55,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3027 states to 3027 states and 4688 transitions. [2019-10-13 23:04:55,880 INFO L78 Accepts]: Start accepts. Automaton has 3027 states and 4688 transitions. Word has length 119 [2019-10-13 23:04:55,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:55,881 INFO L462 AbstractCegarLoop]: Abstraction has 3027 states and 4688 transitions. [2019-10-13 23:04:55,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:04:55,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3027 states and 4688 transitions. [2019-10-13 23:04:55,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:04:55,888 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:55,889 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:04:56,099 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:04:56,099 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:56,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:56,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1651845294, now seen corresponding path program 1 times [2019-10-13 23:04:56,100 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:56,101 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546679373] [2019-10-13 23:04:56,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:56,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:56,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:56,358 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:04:56,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546679373] [2019-10-13 23:04:56,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505244420] [2019-10-13 23:04:56,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:04:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:56,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 23:04:56,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:04:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:04:57,123 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:04:57,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:04:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:57,436 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:04:57,436 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-13 23:04:57,436 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417702025] [2019-10-13 23:04:57,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:04:57,439 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:57,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:04:57,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:04:57,439 INFO L87 Difference]: Start difference. First operand 3027 states and 4688 transitions. Second operand 6 states. [2019-10-13 23:04:58,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:58,663 INFO L93 Difference]: Finished difference Result 7950 states and 12529 transitions. [2019-10-13 23:04:58,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:04:58,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-13 23:04:58,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:58,721 INFO L225 Difference]: With dead ends: 7950 [2019-10-13 23:04:58,721 INFO L226 Difference]: Without dead ends: 4954 [2019-10-13 23:04:58,753 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:04:58,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4954 states. [2019-10-13 23:04:59,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4954 to 4918. [2019-10-13 23:04:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4918 states. [2019-10-13 23:04:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4918 states to 4918 states and 7492 transitions. [2019-10-13 23:04:59,034 INFO L78 Accepts]: Start accepts. Automaton has 4918 states and 7492 transitions. Word has length 120 [2019-10-13 23:04:59,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:59,035 INFO L462 AbstractCegarLoop]: Abstraction has 4918 states and 7492 transitions. [2019-10-13 23:04:59,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:04:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 4918 states and 7492 transitions. [2019-10-13 23:04:59,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 23:04:59,038 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:59,038 INFO L380 BasicCegarLoop]: trace histogram [3, 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 23:04:59,246 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:04:59,247 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:59,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:59,247 INFO L82 PathProgramCache]: Analyzing trace with hash -2036031418, now seen corresponding path program 1 times [2019-10-13 23:04:59,247 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:59,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671795008] [2019-10-13 23:04:59,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:59,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:59,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:59,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 23:04:59,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671795008] [2019-10-13 23:04:59,539 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:59,540 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:04:59,540 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851334112] [2019-10-13 23:04:59,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:04:59,541 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:59,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:04:59,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:04:59,542 INFO L87 Difference]: Start difference. First operand 4918 states and 7492 transitions. Second operand 10 states. [2019-10-13 23:05:02,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:02,547 INFO L93 Difference]: Finished difference Result 17622 states and 27575 transitions. [2019-10-13 23:05:02,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 23:05:02,548 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-13 23:05:02,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:02,762 INFO L225 Difference]: With dead ends: 17622 [2019-10-13 23:05:02,762 INFO L226 Difference]: Without dead ends: 12735 [2019-10-13 23:05:02,800 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:05:02,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2019-10-13 23:05:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 12462. [2019-10-13 23:05:03,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12462 states. [2019-10-13 23:05:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12462 states to 12462 states and 19328 transitions. [2019-10-13 23:05:03,445 INFO L78 Accepts]: Start accepts. Automaton has 12462 states and 19328 transitions. Word has length 125 [2019-10-13 23:05:03,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:03,445 INFO L462 AbstractCegarLoop]: Abstraction has 12462 states and 19328 transitions. [2019-10-13 23:05:03,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:05:03,446 INFO L276 IsEmpty]: Start isEmpty. Operand 12462 states and 19328 transitions. [2019-10-13 23:05:03,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 23:05:03,450 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:03,450 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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 23:05:03,450 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:03,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1384513082, now seen corresponding path program 1 times [2019-10-13 23:05:03,451 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:03,451 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633666789] [2019-10-13 23:05:03,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:03,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:03,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:05:03,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633666789] [2019-10-13 23:05:03,686 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854646840] [2019-10-13 23:05:03,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:04,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-13 23:05:04,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 23:05:04,407 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:04,608 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2019-10-13 23:05:04,786 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:05:04,786 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:04,787 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-10-13 23:05:04,787 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266912078] [2019-10-13 23:05:04,788 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:04,788 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:04,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:04,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-13 23:05:04,788 INFO L87 Difference]: Start difference. First operand 12462 states and 19328 transitions. Second operand 7 states. [2019-10-13 23:05:07,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:07,079 INFO L93 Difference]: Finished difference Result 26186 states and 40588 transitions. [2019-10-13 23:05:07,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:05:07,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-13 23:05:07,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:07,169 INFO L225 Difference]: With dead ends: 26186 [2019-10-13 23:05:07,170 INFO L226 Difference]: Without dead ends: 13755 [2019-10-13 23:05:07,224 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-13 23:05:07,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13755 states. [2019-10-13 23:05:07,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13755 to 13708. [2019-10-13 23:05:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13708 states. [2019-10-13 23:05:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13708 states to 13708 states and 21011 transitions. [2019-10-13 23:05:07,954 INFO L78 Accepts]: Start accepts. Automaton has 13708 states and 21011 transitions. Word has length 131 [2019-10-13 23:05:07,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:07,955 INFO L462 AbstractCegarLoop]: Abstraction has 13708 states and 21011 transitions. [2019-10-13 23:05:07,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:07,955 INFO L276 IsEmpty]: Start isEmpty. Operand 13708 states and 21011 transitions. [2019-10-13 23:05:07,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 23:05:07,959 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:07,959 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 23:05:08,175 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:08,176 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:08,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:08,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1688174385, now seen corresponding path program 1 times [2019-10-13 23:05:08,176 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:08,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834208489] [2019-10-13 23:05:08,177 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:08,177 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:08,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:05:08,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834208489] [2019-10-13 23:05:08,390 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:08,391 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:05:08,391 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057459044] [2019-10-13 23:05:08,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:05:08,392 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:08,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:05:08,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:08,393 INFO L87 Difference]: Start difference. First operand 13708 states and 21011 transitions. Second operand 10 states. [2019-10-13 23:05:08,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:08,872 INFO L93 Difference]: Finished difference Result 25501 states and 39277 transitions. [2019-10-13 23:05:08,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:05:08,873 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 136 [2019-10-13 23:05:08,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:08,950 INFO L225 Difference]: With dead ends: 25501 [2019-10-13 23:05:08,950 INFO L226 Difference]: Without dead ends: 13952 [2019-10-13 23:05:09,006 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13952 states.