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_spec9_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:05:46,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:05:46,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:05:47,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:05:47,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:05:47,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:05:47,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:05:47,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:05:47,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:05:47,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:05:47,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:05:47,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:05:47,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:05:47,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:05:47,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:05:47,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:05:47,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:05:47,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:05:47,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:05:47,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:05:47,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:05:47,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:05:47,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:05:47,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:05:47,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:05:47,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:05:47,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:05:47,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:05:47,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:05:47,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:05:47,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:05:47,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:05:47,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:05:47,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:05:47,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:05:47,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:05:47,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:05:47,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:05:47,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:05:47,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:05:47,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:05:47,063 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 23:05:47,086 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:05:47,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:05:47,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:05:47,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:05:47,089 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:05:47,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:05:47,089 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:05:47,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:05:47,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:05:47,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:05:47,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:05:47,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:05:47,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:05:47,092 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:05:47,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:05:47,092 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:05:47,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:05:47,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:05:47,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:05:47,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:05:47,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:05:47,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:47,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:05:47,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:05:47,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:05:47,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:05:47,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:05:47,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:05:47,095 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 23:05:47,381 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:05:47,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:05:47,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:05:47,399 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:05:47,399 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:05:47,400 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c [2019-10-13 23:05:47,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efe483710/64be5b300d5748dfa9202cec6af740b9/FLAGbab7a4cbd [2019-10-13 23:05:48,144 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:05:48,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c [2019-10-13 23:05:48,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efe483710/64be5b300d5748dfa9202cec6af740b9/FLAGbab7a4cbd [2019-10-13 23:05:48,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efe483710/64be5b300d5748dfa9202cec6af740b9 [2019-10-13 23:05:48,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:05:48,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:05:48,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:48,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:05:48,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:05:48,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:48" (1/1) ... [2019-10-13 23:05:48,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345a22c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:48, skipping insertion in model container [2019-10-13 23:05:48,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:48" (1/1) ... [2019-10-13 23:05:48,334 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:05:48,411 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:05:49,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:49,261 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:05:49,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:49,504 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:05:49,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:49 WrapperNode [2019-10-13 23:05:49,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:49,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:05:49,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:05:49,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:05:49,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:49" (1/1) ... [2019-10-13 23:05:49,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:49" (1/1) ... [2019-10-13 23:05:49,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:49" (1/1) ... [2019-10-13 23:05:49,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:49" (1/1) ... [2019-10-13 23:05:49,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:49" (1/1) ... [2019-10-13 23:05:49,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:49" (1/1) ... [2019-10-13 23:05:49,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:49" (1/1) ... [2019-10-13 23:05:49,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:05:49,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:05:49,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:05:49,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:05:49,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:49" (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 23:05:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:05:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:05:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:05:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:05:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:05:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:05:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:05:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:05:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:05:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:05:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:05:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:05:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:05:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:05:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:05:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:05:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:05:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:05:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:05:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:05:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:05:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:05:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:05:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:05:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:05:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:05:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:05:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:05:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:05:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:05:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:05:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:05:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:05:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:05:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:05:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:05:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:05:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:05:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:05:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:05:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:05:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:05:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:05:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-13 23:05:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-13 23:05:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:05:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-13 23:05:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-13 23:05:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:05:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-13 23:05:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-13 23:05:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-13 23:05:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-13 23:05:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:05:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:05:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:05:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:05:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:05:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:05:49,868 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:05:49,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:05:49,868 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:05:49,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:05:49,868 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-13 23:05:49,868 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-13 23:05:49,869 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-13 23:05:49,869 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-13 23:05:49,869 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:05:49,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:05:49,870 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:05:49,871 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-13 23:05:49,871 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-13 23:05:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-13 23:05:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-13 23:05:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:05:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:05:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-13 23:05:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-13 23:05:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:05:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-13 23:05:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-13 23:05:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:05:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:05:49,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:05:49,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:05:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:05:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:05:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:05:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:05:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:05:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:05:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:05:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:05:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:05:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:05:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:05:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:05:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:05:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:05:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:05:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:05:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:05:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:05:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:05:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:05:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:05:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:05:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:05:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:05:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:05:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:05:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:05:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:05:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:05:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:05:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:05:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:05:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:05:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:05:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:05:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:05:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:05:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:05:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:05:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:05:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:05:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:05:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:05:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:05:49,899 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:05:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:05:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:05:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:05:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:05:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:05:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:05:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:05:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:05:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:05:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:05:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:05:49,902 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:05:49,902 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:05:49,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:49,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:05:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:05:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:05:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:05:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:05:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:05:49,903 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:05:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:05:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:05:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-13 23:05:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-13 23:05:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-13 23:05:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-13 23:05:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-13 23:05:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-13 23:05:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-13 23:05:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-13 23:05:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:05:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:05:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:05:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:05:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:05:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-13 23:05:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-13 23:05:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-13 23:05:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-13 23:05:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:05:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:05:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-13 23:05:49,907 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-13 23:05:49,907 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-13 23:05:49,907 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-13 23:05:49,907 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:49,907 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:05:49,907 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:05:49,907 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-13 23:05:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-13 23:05:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-13 23:05:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-13 23:05:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:05:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:05:49,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:05:49,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:05:55,041 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:05:55,042 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:05:55,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:55 BoogieIcfgContainer [2019-10-13 23:05:55,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:05:55,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:05:55,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:05:55,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:05:55,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:05:48" (1/3) ... [2019-10-13 23:05:55,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222122ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:55, skipping insertion in model container [2019-10-13 23:05:55,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:49" (2/3) ... [2019-10-13 23:05:55,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222122ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:55, skipping insertion in model container [2019-10-13 23:05:55,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:55" (3/3) ... [2019-10-13 23:05:55,057 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_productSimulator.cil.c [2019-10-13 23:05:55,067 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:05:55,082 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:05:55,093 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:05:55,135 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:05:55,136 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:05:55,136 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:05:55,136 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:05:55,136 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:05:55,136 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:05:55,136 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:05:55,136 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:05:55,170 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states. [2019-10-13 23:05:55,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 23:05:55,187 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:55,188 INFO L380 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:55,190 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:55,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:55,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1073693299, now seen corresponding path program 1 times [2019-10-13 23:05:55,206 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:55,206 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269934747] [2019-10-13 23:05:55,207 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:55,207 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:55,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:55,878 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 23:05:55,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269934747] [2019-10-13 23:05:55,880 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:55,880 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:05:55,881 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92484982] [2019-10-13 23:05:55,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:05:55,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:55,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:05:55,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:05:55,906 INFO L87 Difference]: Start difference. First operand 695 states. Second operand 6 states. [2019-10-13 23:05:56,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:56,108 INFO L93 Difference]: Finished difference Result 1096 states and 1595 transitions. [2019-10-13 23:05:56,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:05:56,110 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2019-10-13 23:05:56,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:56,143 INFO L225 Difference]: With dead ends: 1096 [2019-10-13 23:05:56,143 INFO L226 Difference]: Without dead ends: 553 [2019-10-13 23:05:56,157 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:56,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2019-10-13 23:05:56,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2019-10-13 23:05:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2019-10-13 23:05:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 795 transitions. [2019-10-13 23:05:56,317 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 795 transitions. Word has length 100 [2019-10-13 23:05:56,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:56,321 INFO L462 AbstractCegarLoop]: Abstraction has 553 states and 795 transitions. [2019-10-13 23:05:56,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:05:56,321 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 795 transitions. [2019-10-13 23:05:56,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-13 23:05:56,337 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:56,338 INFO L380 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:56,338 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:56,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:56,341 INFO L82 PathProgramCache]: Analyzing trace with hash 185107402, now seen corresponding path program 1 times [2019-10-13 23:05:56,341 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:56,341 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790298358] [2019-10-13 23:05:56,341 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:56,341 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:56,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:56,702 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 23:05:56,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790298358] [2019-10-13 23:05:56,702 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:56,702 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:05:56,703 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856070416] [2019-10-13 23:05:56,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:56,711 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:56,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:56,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:05:56,711 INFO L87 Difference]: Start difference. First operand 553 states and 795 transitions. Second operand 4 states. [2019-10-13 23:05:57,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:57,981 INFO L93 Difference]: Finished difference Result 1553 states and 2267 transitions. [2019-10-13 23:05:57,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:05:57,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2019-10-13 23:05:57,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:57,990 INFO L225 Difference]: With dead ends: 1553 [2019-10-13 23:05:57,990 INFO L226 Difference]: Without dead ends: 1059 [2019-10-13 23:05:57,994 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:05:57,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2019-10-13 23:05:58,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1046. [2019-10-13 23:05:58,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2019-10-13 23:05:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1510 transitions. [2019-10-13 23:05:58,066 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1510 transitions. Word has length 102 [2019-10-13 23:05:58,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:58,067 INFO L462 AbstractCegarLoop]: Abstraction has 1046 states and 1510 transitions. [2019-10-13 23:05:58,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:05:58,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1510 transitions. [2019-10-13 23:05:58,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-13 23:05:58,070 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:58,070 INFO L380 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:58,070 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:58,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:58,071 INFO L82 PathProgramCache]: Analyzing trace with hash -130403046, now seen corresponding path program 1 times [2019-10-13 23:05:58,071 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:58,071 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224490288] [2019-10-13 23:05:58,072 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:58,072 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:58,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:58,306 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 23:05:58,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224490288] [2019-10-13 23:05:58,307 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:58,307 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:58,307 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008983786] [2019-10-13 23:05:58,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:58,310 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:58,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:58,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:58,310 INFO L87 Difference]: Start difference. First operand 1046 states and 1510 transitions. Second operand 3 states. [2019-10-13 23:05:58,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:58,442 INFO L93 Difference]: Finished difference Result 2901 states and 4280 transitions. [2019-10-13 23:05:58,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:58,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-10-13 23:05:58,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:58,458 INFO L225 Difference]: With dead ends: 2901 [2019-10-13 23:05:58,459 INFO L226 Difference]: Without dead ends: 1947 [2019-10-13 23:05:58,465 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:58,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2019-10-13 23:05:58,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1915. [2019-10-13 23:05:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2019-10-13 23:05:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2817 transitions. [2019-10-13 23:05:58,634 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2817 transitions. Word has length 103 [2019-10-13 23:05:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:58,635 INFO L462 AbstractCegarLoop]: Abstraction has 1915 states and 2817 transitions. [2019-10-13 23:05:58,635 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2817 transitions. [2019-10-13 23:05:58,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 23:05:58,645 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:58,646 INFO L380 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:58,646 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:58,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:58,646 INFO L82 PathProgramCache]: Analyzing trace with hash 251369444, now seen corresponding path program 1 times [2019-10-13 23:05:58,647 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:58,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932349063] [2019-10-13 23:05:58,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:58,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:58,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:58,838 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 23:05:58,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932349063] [2019-10-13 23:05:58,839 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:58,839 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:58,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442883424] [2019-10-13 23:05:58,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:58,840 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:58,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:58,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:58,840 INFO L87 Difference]: Start difference. First operand 1915 states and 2817 transitions. Second operand 3 states. [2019-10-13 23:05:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:59,034 INFO L93 Difference]: Finished difference Result 5508 states and 8224 transitions. [2019-10-13 23:05:59,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:59,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-10-13 23:05:59,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:59,072 INFO L225 Difference]: With dead ends: 5508 [2019-10-13 23:05:59,072 INFO L226 Difference]: Without dead ends: 3687 [2019-10-13 23:05:59,084 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:59,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2019-10-13 23:05:59,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3654. [2019-10-13 23:05:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2019-10-13 23:05:59,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5447 transitions. [2019-10-13 23:05:59,271 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5447 transitions. Word has length 104 [2019-10-13 23:05:59,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:59,272 INFO L462 AbstractCegarLoop]: Abstraction has 3654 states and 5447 transitions. [2019-10-13 23:05:59,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5447 transitions. [2019-10-13 23:05:59,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 23:05:59,276 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:59,276 INFO L380 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:59,276 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:59,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:59,277 INFO L82 PathProgramCache]: Analyzing trace with hash -798581348, now seen corresponding path program 1 times [2019-10-13 23:05:59,277 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:59,278 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697504338] [2019-10-13 23:05:59,278 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:59,278 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:59,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:59,468 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 23:05:59,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697504338] [2019-10-13 23:05:59,469 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:59,469 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:59,469 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997851577] [2019-10-13 23:05:59,470 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:59,470 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:59,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:59,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:59,471 INFO L87 Difference]: Start difference. First operand 3654 states and 5447 transitions. Second operand 3 states. [2019-10-13 23:05:59,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:59,844 INFO L93 Difference]: Finished difference Result 10723 states and 16193 transitions. [2019-10-13 23:05:59,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:59,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2019-10-13 23:05:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:59,905 INFO L225 Difference]: With dead ends: 10723 [2019-10-13 23:05:59,906 INFO L226 Difference]: Without dead ends: 7167 [2019-10-13 23:05:59,928 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:59,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7167 states. [2019-10-13 23:06:00,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7167 to 7133. [2019-10-13 23:06:00,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7133 states. [2019-10-13 23:06:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 10765 transitions. [2019-10-13 23:06:00,292 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 10765 transitions. Word has length 105 [2019-10-13 23:06:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:06:00,293 INFO L462 AbstractCegarLoop]: Abstraction has 7133 states and 10765 transitions. [2019-10-13 23:06:00,293 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:06:00,293 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 10765 transitions. [2019-10-13 23:06:00,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-13 23:06:00,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:06:00,296 INFO L380 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:00,296 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:06:00,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:06:00,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1012686374, now seen corresponding path program 1 times [2019-10-13 23:06:00,297 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:06:00,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292713187] [2019-10-13 23:06:00,297 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:06:00,297 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:06:00,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:06:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:06:00,525 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 23:06:00,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292713187] [2019-10-13 23:06:00,526 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:06:00,527 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:06:00,527 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253511306] [2019-10-13 23:06:00,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:06:00,528 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:06:00,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:06:00,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:06:00,528 INFO L87 Difference]: Start difference. First operand 7133 states and 10765 transitions. Second operand 3 states. [2019-10-13 23:06:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:06:01,106 INFO L93 Difference]: Finished difference Result 21154 states and 32434 transitions. [2019-10-13 23:06:01,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:06:01,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-10-13 23:06:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:06:01,237 INFO L225 Difference]: With dead ends: 21154 [2019-10-13 23:06:01,237 INFO L226 Difference]: Without dead ends: 14127 [2019-10-13 23:06:01,281 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:06:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14127 states. [2019-10-13 23:06:02,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14127 to 14092. [2019-10-13 23:06:02,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14092 states. [2019-10-13 23:06:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14092 states to 14092 states and 21623 transitions. [2019-10-13 23:06:02,184 INFO L78 Accepts]: Start accepts. Automaton has 14092 states and 21623 transitions. Word has length 106 [2019-10-13 23:06:02,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:06:02,184 INFO L462 AbstractCegarLoop]: Abstraction has 14092 states and 21623 transitions. [2019-10-13 23:06:02,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:06:02,185 INFO L276 IsEmpty]: Start isEmpty. Operand 14092 states and 21623 transitions. [2019-10-13 23:06:02,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-13 23:06:02,188 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:06:02,188 INFO L380 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:02,188 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:06:02,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:06:02,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1327414814, now seen corresponding path program 1 times [2019-10-13 23:06:02,189 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:06:02,189 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275205668] [2019-10-13 23:06:02,189 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:06:02,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:06:02,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:06:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:06:02,335 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 23:06:02,335 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275205668] [2019-10-13 23:06:02,336 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:06:02,336 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:06:02,336 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755054849] [2019-10-13 23:06:02,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:06:02,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:06:02,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:06:02,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:06:02,337 INFO L87 Difference]: Start difference. First operand 14092 states and 21623 transitions. Second operand 3 states. [2019-10-13 23:06:02,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:06:02,989 INFO L93 Difference]: Finished difference Result 14998 states and 23064 transitions. [2019-10-13 23:06:02,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:06:02,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2019-10-13 23:06:02,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:06:03,087 INFO L225 Difference]: With dead ends: 14998 [2019-10-13 23:06:03,087 INFO L226 Difference]: Without dead ends: 14981 [2019-10-13 23:06:03,094 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:06:03,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14981 states. [2019-10-13 23:06:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14981 to 14951. [2019-10-13 23:06:03,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14951 states. [2019-10-13 23:06:03,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14951 states to 14951 states and 22998 transitions. [2019-10-13 23:06:03,804 INFO L78 Accepts]: Start accepts. Automaton has 14951 states and 22998 transitions. Word has length 107 [2019-10-13 23:06:03,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:06:03,805 INFO L462 AbstractCegarLoop]: Abstraction has 14951 states and 22998 transitions. [2019-10-13 23:06:03,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:06:03,805 INFO L276 IsEmpty]: Start isEmpty. Operand 14951 states and 22998 transitions. [2019-10-13 23:06:03,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-13 23:06:03,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:06:03,816 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:03,816 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:06:03,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:06:03,817 INFO L82 PathProgramCache]: Analyzing trace with hash 454583960, now seen corresponding path program 1 times [2019-10-13 23:06:03,817 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:06:03,817 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503854697] [2019-10-13 23:06:03,817 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:06:03,817 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:06:03,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:06:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:06:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-13 23:06:04,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503854697] [2019-10-13 23:06:04,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97314861] [2019-10-13 23:06:04,113 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 23:06:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:06:05,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 3873 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:06:05,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:06:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-13 23:06:05,872 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:06:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-13 23:06:06,501 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:06:06,501 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 4] total 11 [2019-10-13 23:06:06,502 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789610896] [2019-10-13 23:06:06,503 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:06:06,504 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:06:06,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:06:06,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:06:06,505 INFO L87 Difference]: Start difference. First operand 14951 states and 22998 transitions. Second operand 4 states. [2019-10-13 23:06:07,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:06:07,233 INFO L93 Difference]: Finished difference Result 31136 states and 49325 transitions. [2019-10-13 23:06:07,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:06:07,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2019-10-13 23:06:07,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:06:07,370 INFO L225 Difference]: With dead ends: 31136 [2019-10-13 23:06:07,370 INFO L226 Difference]: Without dead ends: 16277 [2019-10-13 23:06:07,450 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 427 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:06:07,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16277 states. [2019-10-13 23:06:08,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16277 to 16277. [2019-10-13 23:06:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16277 states. [2019-10-13 23:06:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16277 states to 16277 states and 25480 transitions. [2019-10-13 23:06:08,424 INFO L78 Accepts]: Start accepts. Automaton has 16277 states and 25480 transitions. Word has length 214 [2019-10-13 23:06:08,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:06:08,425 INFO L462 AbstractCegarLoop]: Abstraction has 16277 states and 25480 transitions. [2019-10-13 23:06:08,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:06:08,425 INFO L276 IsEmpty]: Start isEmpty. Operand 16277 states and 25480 transitions. [2019-10-13 23:06:08,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-13 23:06:08,436 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:06:08,436 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:08,656 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:06:08,656 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:06:08,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:06:08,657 INFO L82 PathProgramCache]: Analyzing trace with hash -468788512, now seen corresponding path program 1 times [2019-10-13 23:06:08,657 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:06:08,657 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282010459] [2019-10-13 23:06:08,657 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:06:08,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:06:08,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:06:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:06:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 23:06:09,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282010459] [2019-10-13 23:06:09,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638976801] [2019-10-13 23:06:09,023 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 23:06:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:06:10,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 3925 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:06:10,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:06:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-13 23:06:10,234 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:06:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 23:06:10,899 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:06:10,899 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:06:10,900 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520843829] [2019-10-13 23:06:10,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:06:10,901 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:06:10,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:06:10,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:06:10,902 INFO L87 Difference]: Start difference. First operand 16277 states and 25480 transitions. Second operand 4 states. [2019-10-13 23:06:11,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:06:11,613 INFO L93 Difference]: Finished difference Result 33788 states and 54255 transitions. [2019-10-13 23:06:11,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:06:11,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 226 [2019-10-13 23:06:11,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:06:11,710 INFO L225 Difference]: With dead ends: 33788 [2019-10-13 23:06:11,711 INFO L226 Difference]: Without dead ends: 17603 [2019-10-13 23:06:11,755 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 449 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:06:11,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17603 states. [2019-10-13 23:06:12,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17603 to 17603. [2019-10-13 23:06:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17603 states. [2019-10-13 23:06:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17603 states to 17603 states and 27962 transitions. [2019-10-13 23:06:12,478 INFO L78 Accepts]: Start accepts. Automaton has 17603 states and 27962 transitions. Word has length 226 [2019-10-13 23:06:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:06:12,481 INFO L462 AbstractCegarLoop]: Abstraction has 17603 states and 27962 transitions. [2019-10-13 23:06:12,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:06:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 17603 states and 27962 transitions. [2019-10-13 23:06:12,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2019-10-13 23:06:12,508 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:06:12,509 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:12,730 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:06:12,731 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:06:12,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:06:12,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1404566354, now seen corresponding path program 1 times [2019-10-13 23:06:12,732 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:06:12,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691185864] [2019-10-13 23:06:12,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:06:12,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:06:12,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:06:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:06:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-10-13 23:06:13,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691185864] [2019-10-13 23:06:13,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984565999] [2019-10-13 23:06:13,531 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 23:06:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:06:14,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 4680 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 23:06:14,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:06:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2019-10-13 23:06:14,604 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:06:16,344 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-10-13 23:06:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-10-13 23:06:16,902 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:06:16,902 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 20 [2019-10-13 23:06:16,902 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995519143] [2019-10-13 23:06:16,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:06:16,904 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:06:16,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:06:16,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:06:16,904 INFO L87 Difference]: Start difference. First operand 17603 states and 27962 transitions. Second operand 9 states. [2019-10-13 23:06:17,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:06:17,437 INFO L93 Difference]: Finished difference Result 36578 states and 58638 transitions. [2019-10-13 23:06:17,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:06:17,437 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 328 [2019-10-13 23:06:17,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted.