java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:47,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:47,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:47,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:47,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:47,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:47,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:47,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:47,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:47,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:47,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:47,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:47,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:47,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:47,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:47,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:47,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:47,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:47,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:47,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:47,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:47,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:47,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:47,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:47,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:47,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:47,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:47,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:47,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:47,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:47,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:47,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:47,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:47,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:47,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:47,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:47,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:47,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:47,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:47,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:47,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:47,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:03:47,266 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:47,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:47,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:47,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:47,268 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:47,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:47,269 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:47,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:47,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:47,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:47,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:47,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:47,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:47,270 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:47,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:47,270 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:47,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:47,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:47,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:47,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:47,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:47,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:47,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:47,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:47,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:47,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:47,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:47,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:47,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:03:47,560 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:47,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:47,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:47,582 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:47,583 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:47,584 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product21.cil.c [2019-10-13 23:03:47,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f21d6a79c/18e1176bbf3849e294b70f205ae49b3d/FLAGce4ed62f1 [2019-10-13 23:03:48,354 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:48,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product21.cil.c [2019-10-13 23:03:48,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f21d6a79c/18e1176bbf3849e294b70f205ae49b3d/FLAGce4ed62f1 [2019-10-13 23:03:48,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f21d6a79c/18e1176bbf3849e294b70f205ae49b3d [2019-10-13 23:03:48,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:48,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:48,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:48,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:48,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:48,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:48" (1/1) ... [2019-10-13 23:03:48,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d567e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:48, skipping insertion in model container [2019-10-13 23:03:48,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:48" (1/1) ... [2019-10-13 23:03:48,507 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:48,603 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:49,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:49,325 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:49,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:49,545 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:49,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:49 WrapperNode [2019-10-13 23:03:49,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:49,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:49,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:49,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:49,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:49" (1/1) ... [2019-10-13 23:03:49,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:49" (1/1) ... [2019-10-13 23:03:49,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:49" (1/1) ... [2019-10-13 23:03:49,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:49" (1/1) ... [2019-10-13 23:03:49,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:49" (1/1) ... [2019-10-13 23:03:49,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:49" (1/1) ... [2019-10-13 23:03:49,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:49" (1/1) ... [2019-10-13 23:03:49,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:49,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:49,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:49,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:49,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:49" (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 23:03:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:49,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:49,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:49,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:49,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:49,859 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:03:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:03:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:03:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:03:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:03:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:03:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:03:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:03:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:03:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:03:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:03:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:03:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:03:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:03:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:03:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:03:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:54,867 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:54,867 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:54,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:54 BoogieIcfgContainer [2019-10-13 23:03:54,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:54,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:54,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:54,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:54,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:48" (1/3) ... [2019-10-13 23:03:54,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0d93a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:54, skipping insertion in model container [2019-10-13 23:03:54,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:49" (2/3) ... [2019-10-13 23:03:54,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0d93a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:54, skipping insertion in model container [2019-10-13 23:03:54,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:54" (3/3) ... [2019-10-13 23:03:54,878 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product21.cil.c [2019-10-13 23:03:54,889 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:54,899 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:54,912 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:54,944 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:54,945 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:54,945 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:54,945 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:54,945 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:54,945 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:54,945 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:54,945 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states. [2019-10-13 23:03:55,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-13 23:03:55,010 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:55,011 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:55,013 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:55,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:55,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1246126467, now seen corresponding path program 1 times [2019-10-13 23:03:55,029 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:55,029 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924350397] [2019-10-13 23:03:55,029 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:55,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:55,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:03:55,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924350397] [2019-10-13 23:03:55,857 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:55,857 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:03:55,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385552200] [2019-10-13 23:03:55,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:03:55,868 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:55,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:03:55,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:55,887 INFO L87 Difference]: Start difference. First operand 567 states. Second operand 9 states. [2019-10-13 23:04:01,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:01,264 INFO L93 Difference]: Finished difference Result 1394 states and 2144 transitions. [2019-10-13 23:04:01,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 23:04:01,265 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2019-10-13 23:04:01,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:01,298 INFO L225 Difference]: With dead ends: 1394 [2019-10-13 23:04:01,298 INFO L226 Difference]: Without dead ends: 975 [2019-10-13 23:04:01,311 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-10-13 23:04:01,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2019-10-13 23:04:01,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 943. [2019-10-13 23:04:01,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2019-10-13 23:04:01,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1446 transitions. [2019-10-13 23:04:01,549 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1446 transitions. Word has length 106 [2019-10-13 23:04:01,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:01,550 INFO L462 AbstractCegarLoop]: Abstraction has 943 states and 1446 transitions. [2019-10-13 23:04:01,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:04:01,551 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1446 transitions. [2019-10-13 23:04:01,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:04:01,559 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:01,559 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:01,560 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:01,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:01,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1358788791, now seen corresponding path program 1 times [2019-10-13 23:04:01,560 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:01,561 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057170414] [2019-10-13 23:04:01,561 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:01,561 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:01,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:01,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:01,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057170414] [2019-10-13 23:04:01,873 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:01,873 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:01,873 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389612901] [2019-10-13 23:04:01,876 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:01,876 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:01,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:01,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:01,877 INFO L87 Difference]: Start difference. First operand 943 states and 1446 transitions. Second operand 7 states. [2019-10-13 23:04:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:02,002 INFO L93 Difference]: Finished difference Result 1509 states and 2328 transitions. [2019-10-13 23:04:02,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:04:02,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-10-13 23:04:02,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:02,017 INFO L225 Difference]: With dead ends: 1509 [2019-10-13 23:04:02,017 INFO L226 Difference]: Without dead ends: 980 [2019-10-13 23:04:02,022 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:02,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2019-10-13 23:04:02,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 964. [2019-10-13 23:04:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2019-10-13 23:04:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1476 transitions. [2019-10-13 23:04:02,114 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1476 transitions. Word has length 112 [2019-10-13 23:04:02,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:02,115 INFO L462 AbstractCegarLoop]: Abstraction has 964 states and 1476 transitions. [2019-10-13 23:04:02,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:02,115 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1476 transitions. [2019-10-13 23:04:02,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-13 23:04:02,121 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:02,129 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:02,130 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:02,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:02,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1366611604, now seen corresponding path program 1 times [2019-10-13 23:04:02,131 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:02,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344950214] [2019-10-13 23:04:02,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:02,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:02,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:02,387 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344950214] [2019-10-13 23:04:02,387 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:02,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:02,387 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571746621] [2019-10-13 23:04:02,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:02,388 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:02,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:02,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:02,389 INFO L87 Difference]: Start difference. First operand 964 states and 1476 transitions. Second operand 7 states. [2019-10-13 23:04:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:02,508 INFO L93 Difference]: Finished difference Result 1538 states and 2366 transitions. [2019-10-13 23:04:02,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:04:02,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2019-10-13 23:04:02,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:02,518 INFO L225 Difference]: With dead ends: 1538 [2019-10-13 23:04:02,519 INFO L226 Difference]: Without dead ends: 995 [2019-10-13 23:04:02,522 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:02,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2019-10-13 23:04:02,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 967. [2019-10-13 23:04:02,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2019-10-13 23:04:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1479 transitions. [2019-10-13 23:04:02,584 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1479 transitions. Word has length 111 [2019-10-13 23:04:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:02,585 INFO L462 AbstractCegarLoop]: Abstraction has 967 states and 1479 transitions. [2019-10-13 23:04:02,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1479 transitions. [2019-10-13 23:04:02,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:04:02,589 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:02,589 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:02,589 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:02,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:02,590 INFO L82 PathProgramCache]: Analyzing trace with hash 107832681, now seen corresponding path program 1 times [2019-10-13 23:04:02,590 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:02,590 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115021490] [2019-10-13 23:04:02,590 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:02,591 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:02,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:02,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115021490] [2019-10-13 23:04:02,776 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:02,777 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:02,777 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813347302] [2019-10-13 23:04:02,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:02,778 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:02,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:02,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:02,779 INFO L87 Difference]: Start difference. First operand 967 states and 1479 transitions. Second operand 7 states. [2019-10-13 23:04:02,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:02,911 INFO L93 Difference]: Finished difference Result 1543 states and 2371 transitions. [2019-10-13 23:04:02,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:04:02,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-10-13 23:04:02,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:02,921 INFO L225 Difference]: With dead ends: 1543 [2019-10-13 23:04:02,921 INFO L226 Difference]: Without dead ends: 998 [2019-10-13 23:04:02,926 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:02,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2019-10-13 23:04:02,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 970. [2019-10-13 23:04:02,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2019-10-13 23:04:03,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1482 transitions. [2019-10-13 23:04:03,003 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1482 transitions. Word has length 112 [2019-10-13 23:04:03,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:03,004 INFO L462 AbstractCegarLoop]: Abstraction has 970 states and 1482 transitions. [2019-10-13 23:04:03,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1482 transitions. [2019-10-13 23:04:03,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-13 23:04:03,009 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:03,009 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:03,009 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:03,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:03,010 INFO L82 PathProgramCache]: Analyzing trace with hash 906333268, now seen corresponding path program 1 times [2019-10-13 23:04:03,010 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:03,010 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452014856] [2019-10-13 23:04:03,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:03,011 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:03,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:03,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452014856] [2019-10-13 23:04:03,380 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:03,380 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:03,381 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332723474] [2019-10-13 23:04:03,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:03,382 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:03,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:03,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:03,383 INFO L87 Difference]: Start difference. First operand 970 states and 1482 transitions. Second operand 7 states. [2019-10-13 23:04:07,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:07,382 INFO L93 Difference]: Finished difference Result 2080 states and 3197 transitions. [2019-10-13 23:04:07,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:04:07,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-13 23:04:07,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:07,394 INFO L225 Difference]: With dead ends: 2080 [2019-10-13 23:04:07,394 INFO L226 Difference]: Without dead ends: 1408 [2019-10-13 23:04:07,399 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:07,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2019-10-13 23:04:07,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1358. [2019-10-13 23:04:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2019-10-13 23:04:07,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2036 transitions. [2019-10-13 23:04:07,482 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2036 transitions. Word has length 115 [2019-10-13 23:04:07,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:07,486 INFO L462 AbstractCegarLoop]: Abstraction has 1358 states and 2036 transitions. [2019-10-13 23:04:07,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:07,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2036 transitions. [2019-10-13 23:04:07,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:04:07,492 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:07,496 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:07,496 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:07,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:07,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1509541957, now seen corresponding path program 1 times [2019-10-13 23:04:07,497 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:07,497 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279864703] [2019-10-13 23:04:07,497 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:07,498 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:07,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:07,741 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279864703] [2019-10-13 23:04:07,741 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:07,741 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:04:07,742 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282353174] [2019-10-13 23:04:07,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:04:07,742 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:07,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:04:07,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:04:07,743 INFO L87 Difference]: Start difference. First operand 1358 states and 2036 transitions. Second operand 6 states. [2019-10-13 23:04:12,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:12,009 INFO L93 Difference]: Finished difference Result 5421 states and 8451 transitions. [2019-10-13 23:04:12,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:04:12,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2019-10-13 23:04:12,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:12,049 INFO L225 Difference]: With dead ends: 5421 [2019-10-13 23:04:12,049 INFO L226 Difference]: Without dead ends: 4106 [2019-10-13 23:04:12,060 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2019-10-13 23:04:12,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 3809. [2019-10-13 23:04:12,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3809 states. [2019-10-13 23:04:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3809 states to 3809 states and 5853 transitions. [2019-10-13 23:04:12,313 INFO L78 Accepts]: Start accepts. Automaton has 3809 states and 5853 transitions. Word has length 119 [2019-10-13 23:04:12,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:12,313 INFO L462 AbstractCegarLoop]: Abstraction has 3809 states and 5853 transitions. [2019-10-13 23:04:12,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:04:12,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3809 states and 5853 transitions. [2019-10-13 23:04:12,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:04:12,317 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:12,317 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:12,318 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:12,318 INFO L82 PathProgramCache]: Analyzing trace with hash -574764340, now seen corresponding path program 1 times [2019-10-13 23:04:12,318 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:12,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650187285] [2019-10-13 23:04:12,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:12,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:12,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:12,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:12,463 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650187285] [2019-10-13 23:04:12,463 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:12,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:12,464 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608044024] [2019-10-13 23:04:12,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:12,464 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:12,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:12,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:12,465 INFO L87 Difference]: Start difference. First operand 3809 states and 5853 transitions. Second operand 4 states. [2019-10-13 23:04:12,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:12,823 INFO L93 Difference]: Finished difference Result 7325 states and 11680 transitions. [2019-10-13 23:04:12,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:04:12,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-13 23:04:12,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:12,857 INFO L225 Difference]: With dead ends: 7325 [2019-10-13 23:04:12,857 INFO L226 Difference]: Without dead ends: 4241 [2019-10-13 23:04:12,880 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:12,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2019-10-13 23:04:13,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 4241. [2019-10-13 23:04:13,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4241 states. [2019-10-13 23:04:13,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 6597 transitions. [2019-10-13 23:04:13,125 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 6597 transitions. Word has length 121 [2019-10-13 23:04:13,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:13,127 INFO L462 AbstractCegarLoop]: Abstraction has 4241 states and 6597 transitions. [2019-10-13 23:04:13,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:13,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 6597 transitions. [2019-10-13 23:04:13,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:04:13,131 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:13,131 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:13,131 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:13,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:13,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1206469110, now seen corresponding path program 1 times [2019-10-13 23:04:13,132 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:13,132 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910799812] [2019-10-13 23:04:13,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:13,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:13,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:13,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910799812] [2019-10-13 23:04:13,314 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:13,314 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:13,314 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905714965] [2019-10-13 23:04:13,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:13,315 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:13,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:13,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:13,316 INFO L87 Difference]: Start difference. First operand 4241 states and 6597 transitions. Second operand 7 states. [2019-10-13 23:04:16,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:16,810 INFO L93 Difference]: Finished difference Result 7627 states and 11925 transitions. [2019-10-13 23:04:16,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:04:16,810 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2019-10-13 23:04:16,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:16,847 INFO L225 Difference]: With dead ends: 7627 [2019-10-13 23:04:16,847 INFO L226 Difference]: Without dead ends: 4411 [2019-10-13 23:04:16,871 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:04:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2019-10-13 23:04:17,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 4325. [2019-10-13 23:04:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4325 states. [2019-10-13 23:04:17,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4325 states to 4325 states and 6703 transitions. [2019-10-13 23:04:17,128 INFO L78 Accepts]: Start accepts. Automaton has 4325 states and 6703 transitions. Word has length 121 [2019-10-13 23:04:17,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:17,128 INFO L462 AbstractCegarLoop]: Abstraction has 4325 states and 6703 transitions. [2019-10-13 23:04:17,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:17,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4325 states and 6703 transitions. [2019-10-13 23:04:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 23:04:17,133 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:17,134 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:17,134 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:17,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:17,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1876597302, now seen corresponding path program 1 times [2019-10-13 23:04:17,135 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:17,139 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893626617] [2019-10-13 23:04:17,139 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:17,139 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:17,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 23:04:17,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893626617] [2019-10-13 23:04:17,333 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:17,333 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:17,334 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027588039] [2019-10-13 23:04:17,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:17,334 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:17,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:17,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:17,335 INFO L87 Difference]: Start difference. First operand 4325 states and 6703 transitions. Second operand 4 states.