java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:07,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:07,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:07,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:07,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:07,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:07,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:07,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:07,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:07,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:07,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:07,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:07,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:07,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:07,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:07,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:07,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:07,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:07,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:07,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:07,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:07,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:07,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:07,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:07,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:07,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:07,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:07,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:07,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:07,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:07,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:07,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:07,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:07,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:07,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:07,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:07,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:07,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:07,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:07,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:07,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:07,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:03:07,293 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:07,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:07,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:07,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:07,297 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:07,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:07,297 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:07,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:07,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:07,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:07,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:07,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:07,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:07,298 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:07,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:07,299 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:07,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:07,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:07,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:07,300 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:07,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:07,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:07,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:07,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:07,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:07,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:07,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:07,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:07,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:03:07,597 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:07,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:07,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:07,616 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:07,617 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:07,617 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product27.cil.c [2019-10-13 23:03:07,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1caea5d0d/4321a703c0a34c729f06485da054357a/FLAGef1777c79 [2019-10-13 23:03:08,320 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:08,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product27.cil.c [2019-10-13 23:03:08,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1caea5d0d/4321a703c0a34c729f06485da054357a/FLAGef1777c79 [2019-10-13 23:03:08,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1caea5d0d/4321a703c0a34c729f06485da054357a [2019-10-13 23:03:08,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:08,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:08,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:08,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:08,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:08,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:08" (1/1) ... [2019-10-13 23:03:08,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea19e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:08, skipping insertion in model container [2019-10-13 23:03:08,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:08" (1/1) ... [2019-10-13 23:03:08,537 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:08,625 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:09,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:09,436 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:09,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:09,637 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:09,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:09 WrapperNode [2019-10-13 23:03:09,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:09,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:09,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:09,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:09,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:09" (1/1) ... [2019-10-13 23:03:09,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:09" (1/1) ... [2019-10-13 23:03:09,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:09" (1/1) ... [2019-10-13 23:03:09,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:09" (1/1) ... [2019-10-13 23:03:09,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:09" (1/1) ... [2019-10-13 23:03:09,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:09" (1/1) ... [2019-10-13 23:03:09,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:09" (1/1) ... [2019-10-13 23:03:09,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:09,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:09,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:09,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:09,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:09,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:09,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:09,971 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:09,971 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:09,971 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:09,971 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:09,971 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:09,972 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:09,972 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:09,972 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:09,972 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:09,972 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:09,973 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:09,973 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:09,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:09,973 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:09,974 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:09,974 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:09,974 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:09,974 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:09,979 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:09,979 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:09,979 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:09,979 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:09,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:09,980 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:03:09,980 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:09,980 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:03:09,980 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:03:09,980 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:09,980 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:09,981 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:09,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:09,981 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:09,981 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:09,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:09,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:09,982 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:09,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:09,982 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:03:09,982 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:03:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:03:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:03:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:03:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:03:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:03:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:03:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:03:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:03:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:03:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:14,884 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:14,885 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:14,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:14 BoogieIcfgContainer [2019-10-13 23:03:14,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:14,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:14,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:14,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:14,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:08" (1/3) ... [2019-10-13 23:03:14,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648dae91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:14, skipping insertion in model container [2019-10-13 23:03:14,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:09" (2/3) ... [2019-10-13 23:03:14,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648dae91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:14, skipping insertion in model container [2019-10-13 23:03:14,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:14" (3/3) ... [2019-10-13 23:03:14,896 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product27.cil.c [2019-10-13 23:03:14,906 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:14,916 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:14,928 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:14,960 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:14,960 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:14,960 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:14,960 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:14,960 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:14,961 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:14,961 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:14,961 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:14,993 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states. [2019-10-13 23:03:15,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 23:03:15,023 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:15,025 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:15,027 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:15,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:15,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1391157792, now seen corresponding path program 1 times [2019-10-13 23:03:15,040 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:15,041 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790559631] [2019-10-13 23:03:15,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:15,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:15,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:15,722 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:03:15,723 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790559631] [2019-10-13 23:03:15,724 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:15,725 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:03:15,726 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916263096] [2019-10-13 23:03:15,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:03:15,732 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:15,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:03:15,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:15,750 INFO L87 Difference]: Start difference. First operand 577 states. Second operand 2 states. [2019-10-13 23:03:15,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:15,832 INFO L93 Difference]: Finished difference Result 486 states and 719 transitions. [2019-10-13 23:03:15,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:03:15,834 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 135 [2019-10-13 23:03:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:15,868 INFO L225 Difference]: With dead ends: 486 [2019-10-13 23:03:15,869 INFO L226 Difference]: Without dead ends: 452 [2019-10-13 23:03:15,874 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:15,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2019-10-13 23:03:15,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2019-10-13 23:03:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2019-10-13 23:03:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 668 transitions. [2019-10-13 23:03:15,994 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 668 transitions. Word has length 135 [2019-10-13 23:03:15,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:15,997 INFO L462 AbstractCegarLoop]: Abstraction has 452 states and 668 transitions. [2019-10-13 23:03:15,998 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:03:15,998 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 668 transitions. [2019-10-13 23:03:16,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 23:03:16,004 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:16,004 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:16,005 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:16,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:16,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1368938200, now seen corresponding path program 1 times [2019-10-13 23:03:16,006 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:16,006 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786677103] [2019-10-13 23:03:16,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:16,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:16,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:03:16,483 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786677103] [2019-10-13 23:03:16,484 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:16,484 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:16,484 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126290576] [2019-10-13 23:03:16,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:16,489 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:16,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:16,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:16,490 INFO L87 Difference]: Start difference. First operand 452 states and 668 transitions. Second operand 7 states. [2019-10-13 23:03:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:20,341 INFO L93 Difference]: Finished difference Result 1261 states and 1915 transitions. [2019-10-13 23:03:20,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:03:20,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2019-10-13 23:03:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:20,359 INFO L225 Difference]: With dead ends: 1261 [2019-10-13 23:03:20,359 INFO L226 Difference]: Without dead ends: 862 [2019-10-13 23:03:20,372 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:03:20,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2019-10-13 23:03:20,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 837. [2019-10-13 23:03:20,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2019-10-13 23:03:20,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1266 transitions. [2019-10-13 23:03:20,473 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1266 transitions. Word has length 136 [2019-10-13 23:03:20,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:20,474 INFO L462 AbstractCegarLoop]: Abstraction has 837 states and 1266 transitions. [2019-10-13 23:03:20,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:20,474 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1266 transitions. [2019-10-13 23:03:20,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 23:03:20,478 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:20,481 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:20,482 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:20,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:20,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1603360115, now seen corresponding path program 1 times [2019-10-13 23:03:20,482 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:20,482 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601946023] [2019-10-13 23:03:20,483 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,483 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:03:20,715 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601946023] [2019-10-13 23:03:20,716 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:20,716 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:03:20,716 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833252403] [2019-10-13 23:03:20,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:03:20,717 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:20,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:03:20,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:03:20,718 INFO L87 Difference]: Start difference. First operand 837 states and 1266 transitions. Second operand 6 states. [2019-10-13 23:03:21,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:21,404 INFO L93 Difference]: Finished difference Result 876 states and 1322 transitions. [2019-10-13 23:03:21,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:21,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-10-13 23:03:21,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:21,420 INFO L225 Difference]: With dead ends: 876 [2019-10-13 23:03:21,420 INFO L226 Difference]: Without dead ends: 859 [2019-10-13 23:03:21,422 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:21,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2019-10-13 23:03:21,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 841. [2019-10-13 23:03:21,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2019-10-13 23:03:21,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1270 transitions. [2019-10-13 23:03:21,498 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1270 transitions. Word has length 140 [2019-10-13 23:03:21,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:21,500 INFO L462 AbstractCegarLoop]: Abstraction has 841 states and 1270 transitions. [2019-10-13 23:03:21,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:03:21,501 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1270 transitions. [2019-10-13 23:03:21,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 23:03:21,507 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:21,508 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:21,508 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:21,509 INFO L82 PathProgramCache]: Analyzing trace with hash -2109206818, now seen corresponding path program 1 times [2019-10-13 23:03:21,509 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:21,509 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271398407] [2019-10-13 23:03:21,509 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:21,509 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:21,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:03:21,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271398407] [2019-10-13 23:03:21,790 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:21,790 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:21,790 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163673373] [2019-10-13 23:03:21,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:21,792 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:21,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:21,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:21,793 INFO L87 Difference]: Start difference. First operand 841 states and 1270 transitions. Second operand 8 states. [2019-10-13 23:03:21,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:21,879 INFO L93 Difference]: Finished difference Result 862 states and 1296 transitions. [2019-10-13 23:03:21,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:03:21,879 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2019-10-13 23:03:21,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:21,886 INFO L225 Difference]: With dead ends: 862 [2019-10-13 23:03:21,887 INFO L226 Difference]: Without dead ends: 845 [2019-10-13 23:03:21,888 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:21,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2019-10-13 23:03:21,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 841. [2019-10-13 23:03:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2019-10-13 23:03:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1268 transitions. [2019-10-13 23:03:21,937 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1268 transitions. Word has length 145 [2019-10-13 23:03:21,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:21,938 INFO L462 AbstractCegarLoop]: Abstraction has 841 states and 1268 transitions. [2019-10-13 23:03:21,938 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:21,938 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1268 transitions. [2019-10-13 23:03:21,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 23:03:21,942 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:21,942 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:21,943 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:21,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:21,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1586581229, now seen corresponding path program 1 times [2019-10-13 23:03:21,943 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:21,944 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017773960] [2019-10-13 23:03:21,944 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:21,944 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:21,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:03:23,282 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017773960] [2019-10-13 23:03:23,282 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202035516] [2019-10-13 23:03:23,282 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 23:03:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:23,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 3298 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 23:03:23,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:03:24,081 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 23:03:24,232 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:03:24,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:24,857 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 23:03:24,858 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:03:24,858 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [36] total 41 [2019-10-13 23:03:24,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506364462] [2019-10-13 23:03:24,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:24,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:24,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:24,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2019-10-13 23:03:24,860 INFO L87 Difference]: Start difference. First operand 841 states and 1268 transitions. Second operand 7 states. [2019-10-13 23:03:24,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:24,958 INFO L93 Difference]: Finished difference Result 884 states and 1322 transitions. [2019-10-13 23:03:24,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:24,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2019-10-13 23:03:24,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:24,966 INFO L225 Difference]: With dead ends: 884 [2019-10-13 23:03:24,966 INFO L226 Difference]: Without dead ends: 867 [2019-10-13 23:03:24,967 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 326 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=142, Invalid=1580, Unknown=0, NotChecked=0, Total=1722 [2019-10-13 23:03:24,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2019-10-13 23:03:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 853. [2019-10-13 23:03:25,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 853 states. [2019-10-13 23:03:25,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1280 transitions. [2019-10-13 23:03:25,016 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1280 transitions. Word has length 160 [2019-10-13 23:03:25,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:25,017 INFO L462 AbstractCegarLoop]: Abstraction has 853 states and 1280 transitions. [2019-10-13 23:03:25,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:25,017 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1280 transitions. [2019-10-13 23:03:25,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 23:03:25,022 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:25,023 INFO L380 BasicCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:25,232 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:03:25,232 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:25,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:25,233 INFO L82 PathProgramCache]: Analyzing trace with hash -201277632, now seen corresponding path program 1 times [2019-10-13 23:03:25,233 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:25,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602721718] [2019-10-13 23:03:25,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:25,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:25,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 23:03:25,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602721718] [2019-10-13 23:03:25,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636153961] [2019-10-13 23:03:25,885 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 23:03:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:26,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 41 conjunts are in the unsatisfiable core [2019-10-13 23:03:26,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:03:26,639 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2019-10-13 23:03:27,079 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 23:03:27,079 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:03:27,237 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-10-13 23:03:27,611 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 12