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_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:05:21,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:05:21,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:05:21,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:05:21,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:05:21,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:05:21,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:05:21,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:05:21,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:05:21,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:05:21,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:05:21,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:05:21,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:05:21,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:05:21,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:05:21,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:05:21,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:05:21,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:05:21,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:05:21,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:05:21,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:05:21,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:05:21,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:05:21,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:05:21,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:05:21,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:05:21,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:05:21,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:05:21,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:05:21,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:05:21,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:05:21,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:05:21,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:05:21,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:05:21,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:05:21,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:05:21,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:05:21,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:05:21,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:05:21,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:05:21,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:05:21,467 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 23:05:21,481 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:05:21,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:05:21,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:05:21,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:05:21,483 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:05:21,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:05:21,484 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:05:21,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:05:21,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:05:21,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:05:21,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:05:21,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:05:21,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:05:21,485 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:05:21,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:05:21,485 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:05:21,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:05:21,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:05:21,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:05:21,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:05:21,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:05:21,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:21,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:05:21,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:05:21,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:05:21,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:05:21,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:05:21,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:05:21,488 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 23:05:21,758 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:05:21,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:05:21,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:05:21,777 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:05:21,778 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:05:21,778 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product11.cil.c [2019-10-13 23:05:21,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084959dd3/c32adf6c779b430fa4eb80e47dbdbce2/FLAGa205c62cb [2019-10-13 23:05:22,478 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:05:22,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product11.cil.c [2019-10-13 23:05:22,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084959dd3/c32adf6c779b430fa4eb80e47dbdbce2/FLAGa205c62cb [2019-10-13 23:05:22,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084959dd3/c32adf6c779b430fa4eb80e47dbdbce2 [2019-10-13 23:05:22,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:05:22,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:05:22,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:22,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:05:22,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:05:22,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:22" (1/1) ... [2019-10-13 23:05:22,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ccc7b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:22, skipping insertion in model container [2019-10-13 23:05:22,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:22" (1/1) ... [2019-10-13 23:05:22,697 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:05:22,788 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:05:23,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:23,549 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:05:23,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:23,772 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:05:23,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:23 WrapperNode [2019-10-13 23:05:23,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:23,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:05:23,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:05:23,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:05:23,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:23" (1/1) ... [2019-10-13 23:05:23,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:23" (1/1) ... [2019-10-13 23:05:23,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:23" (1/1) ... [2019-10-13 23:05:23,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:23" (1/1) ... [2019-10-13 23:05:23,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:23" (1/1) ... [2019-10-13 23:05:23,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:23" (1/1) ... [2019-10-13 23:05:23,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:23" (1/1) ... [2019-10-13 23:05:23,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:05:23,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:05:23,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:05:23,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:05:23,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:23" (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 23:05:24,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:05:24,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:05:24,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:24,037 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:05:24,037 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:05:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:05:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:05:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:05:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:05:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:05:24,039 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:05:24,039 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:05:24,039 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:05:24,039 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:05:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:05:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:05:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:05:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:05:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:05:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:05:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:05:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:05:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:05:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:05:24,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:05:24,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:24,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:24,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:24,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:24,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:05:24,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:05:24,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:05:24,044 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:05:24,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:05:24,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:05:24,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:05:24,045 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:05:24,045 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:05:24,045 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:05:24,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:05:24,046 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:05:24,046 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:05:24,046 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:05:24,046 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:05:24,046 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:05:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:05:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:05:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:05:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:05:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:05:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:05:24,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:05:24,048 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:05:24,048 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:05:24,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:05:24,048 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:05:24,049 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:05:24,049 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:24,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:05:24,049 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:05:24,049 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:05:24,050 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:05:24,050 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:05:24,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:05:24,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:05:24,050 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:05:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:05:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:05:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:05:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:05:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:05:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:05:24,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:05:24,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:05:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:05:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:05:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:05:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:05:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:05:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:05:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:05:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:05:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:05:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:05:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:05:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:05:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:05:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:05:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:05:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:05:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:05:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:05:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:05:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:05:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:05:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:05:24,056 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:05:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:05:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:05:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:05:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:05:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:05:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:05:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:05:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:05:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:05:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:05:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:05:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:05:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:05:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:05:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:05:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:05:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:05:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:05:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:05:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:05:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:05:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:05:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:05:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:05:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:05:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:05:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:05:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:05:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:05:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:05:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:05:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:05:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:05:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:05:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:05:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:05:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:05:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:05:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:05:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:05:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:05:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:05:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:05:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:05:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:05:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:05:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:05:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:05:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:05:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:05:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:05:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:05:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:05:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:05:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:05:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:05:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:05:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:05:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:05:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:05:29,058 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:05:29,058 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:05:29,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:29 BoogieIcfgContainer [2019-10-13 23:05:29,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:05:29,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:05:29,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:05:29,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:05:29,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:05:22" (1/3) ... [2019-10-13 23:05:29,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0d29c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:29, skipping insertion in model container [2019-10-13 23:05:29,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:23" (2/3) ... [2019-10-13 23:05:29,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0d29c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:29, skipping insertion in model container [2019-10-13 23:05:29,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:29" (3/3) ... [2019-10-13 23:05:29,072 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product11.cil.c [2019-10-13 23:05:29,087 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:05:29,098 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:05:29,117 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:05:29,149 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:05:29,149 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:05:29,149 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:05:29,150 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:05:29,150 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:05:29,150 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:05:29,150 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:05:29,150 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:05:29,182 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states. [2019-10-13 23:05:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:05:29,202 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:29,204 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:29,206 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:29,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:29,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1545748670, now seen corresponding path program 1 times [2019-10-13 23:05:29,223 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:29,223 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103992645] [2019-10-13 23:05:29,224 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:29,224 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:29,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:29,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103992645] [2019-10-13 23:05:29,845 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:29,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:05:29,847 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348035245] [2019-10-13 23:05:29,855 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:05:29,856 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:29,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:05:29,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:05:29,874 INFO L87 Difference]: Start difference. First operand 555 states. Second operand 2 states. [2019-10-13 23:05:29,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:29,939 INFO L93 Difference]: Finished difference Result 458 states and 681 transitions. [2019-10-13 23:05:29,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:05:29,940 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-13 23:05:29,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:29,966 INFO L225 Difference]: With dead ends: 458 [2019-10-13 23:05:29,966 INFO L226 Difference]: Without dead ends: 424 [2019-10-13 23:05:29,971 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:05:29,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2019-10-13 23:05:30,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2019-10-13 23:05:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2019-10-13 23:05:30,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 630 transitions. [2019-10-13 23:05:30,068 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 630 transitions. Word has length 112 [2019-10-13 23:05:30,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:30,071 INFO L462 AbstractCegarLoop]: Abstraction has 424 states and 630 transitions. [2019-10-13 23:05:30,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:05:30,071 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 630 transitions. [2019-10-13 23:05:30,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 23:05:30,077 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:30,078 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:30,078 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:30,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:30,078 INFO L82 PathProgramCache]: Analyzing trace with hash -179594714, now seen corresponding path program 1 times [2019-10-13 23:05:30,079 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:30,079 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021359504] [2019-10-13 23:05:30,079 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:30,079 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:30,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:30,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:30,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021359504] [2019-10-13 23:05:30,541 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:30,541 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:05:30,542 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964528235] [2019-10-13 23:05:30,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:30,544 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:30,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:30,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:30,545 INFO L87 Difference]: Start difference. First operand 424 states and 630 transitions. Second operand 7 states. [2019-10-13 23:05:34,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:34,328 INFO L93 Difference]: Finished difference Result 1199 states and 1827 transitions. [2019-10-13 23:05:34,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:05:34,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 23:05:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:34,337 INFO L225 Difference]: With dead ends: 1199 [2019-10-13 23:05:34,337 INFO L226 Difference]: Without dead ends: 817 [2019-10-13 23:05:34,345 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 23:05:34,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2019-10-13 23:05:34,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 792. [2019-10-13 23:05:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2019-10-13 23:05:34,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1203 transitions. [2019-10-13 23:05:34,421 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1203 transitions. Word has length 113 [2019-10-13 23:05:34,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:34,422 INFO L462 AbstractCegarLoop]: Abstraction has 792 states and 1203 transitions. [2019-10-13 23:05:34,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:34,422 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1203 transitions. [2019-10-13 23:05:34,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:05:34,426 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:34,427 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:34,427 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:34,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:34,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1071775104, now seen corresponding path program 1 times [2019-10-13 23:05:34,428 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:34,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641633619] [2019-10-13 23:05:34,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:34,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:34,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:34,632 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:34,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641633619] [2019-10-13 23:05:34,633 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:34,633 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:34,634 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404797395] [2019-10-13 23:05:34,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:34,635 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:34,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:34,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:34,638 INFO L87 Difference]: Start difference. First operand 792 states and 1203 transitions. Second operand 3 states. [2019-10-13 23:05:34,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:34,753 INFO L93 Difference]: Finished difference Result 2260 states and 3501 transitions. [2019-10-13 23:05:34,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:34,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2019-10-13 23:05:34,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:34,772 INFO L225 Difference]: With dead ends: 2260 [2019-10-13 23:05:34,772 INFO L226 Difference]: Without dead ends: 1510 [2019-10-13 23:05:34,777 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 23:05:34,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2019-10-13 23:05:34,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1478. [2019-10-13 23:05:34,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2019-10-13 23:05:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2285 transitions. [2019-10-13 23:05:34,909 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2285 transitions. Word has length 117 [2019-10-13 23:05:34,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:34,911 INFO L462 AbstractCegarLoop]: Abstraction has 1478 states and 2285 transitions. [2019-10-13 23:05:34,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:34,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2285 transitions. [2019-10-13 23:05:34,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:05:34,917 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:34,917 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:34,918 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:34,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:34,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1136002442, now seen corresponding path program 1 times [2019-10-13 23:05:34,918 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:34,918 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402902777] [2019-10-13 23:05:34,919 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:34,919 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:34,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:35,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:35,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402902777] [2019-10-13 23:05:35,101 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:35,101 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:35,101 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898619148] [2019-10-13 23:05:35,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:35,102 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:35,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:35,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:35,103 INFO L87 Difference]: Start difference. First operand 1478 states and 2285 transitions. Second operand 3 states. [2019-10-13 23:05:35,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:35,284 INFO L93 Difference]: Finished difference Result 4319 states and 6784 transitions. [2019-10-13 23:05:35,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:35,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-13 23:05:35,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:35,313 INFO L225 Difference]: With dead ends: 4319 [2019-10-13 23:05:35,313 INFO L226 Difference]: Without dead ends: 2884 [2019-10-13 23:05:35,323 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 23:05:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2019-10-13 23:05:35,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2851. [2019-10-13 23:05:35,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2851 states. [2019-10-13 23:05:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 4471 transitions. [2019-10-13 23:05:35,588 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 4471 transitions. Word has length 118 [2019-10-13 23:05:35,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:35,589 INFO L462 AbstractCegarLoop]: Abstraction has 2851 states and 4471 transitions. [2019-10-13 23:05:35,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 4471 transitions. [2019-10-13 23:05:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:05:35,592 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:35,592 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:35,593 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:35,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:35,593 INFO L82 PathProgramCache]: Analyzing trace with hash -857625726, now seen corresponding path program 1 times [2019-10-13 23:05:35,593 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:35,594 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063765251] [2019-10-13 23:05:35,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:35,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:35,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:35,763 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063765251] [2019-10-13 23:05:35,764 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:35,764 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:35,764 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154285783] [2019-10-13 23:05:35,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:35,765 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:35,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:35,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:35,766 INFO L87 Difference]: Start difference. First operand 2851 states and 4471 transitions. Second operand 3 states. [2019-10-13 23:05:36,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:36,024 INFO L93 Difference]: Finished difference Result 8438 states and 13461 transitions. [2019-10-13 23:05:36,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:36,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-13 23:05:36,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:36,072 INFO L225 Difference]: With dead ends: 8438 [2019-10-13 23:05:36,073 INFO L226 Difference]: Without dead ends: 5632 [2019-10-13 23:05:36,088 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 23:05:36,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5632 states. [2019-10-13 23:05:36,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5632 to 5598. [2019-10-13 23:05:36,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5598 states. [2019-10-13 23:05:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5598 states to 5598 states and 8919 transitions. [2019-10-13 23:05:36,474 INFO L78 Accepts]: Start accepts. Automaton has 5598 states and 8919 transitions. Word has length 119 [2019-10-13 23:05:36,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:36,475 INFO L462 AbstractCegarLoop]: Abstraction has 5598 states and 8919 transitions. [2019-10-13 23:05:36,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:36,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5598 states and 8919 transitions. [2019-10-13 23:05:36,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:05:36,478 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:36,479 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:36,479 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:36,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:36,479 INFO L82 PathProgramCache]: Analyzing trace with hash -817878216, now seen corresponding path program 1 times [2019-10-13 23:05:36,480 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:36,480 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659360108] [2019-10-13 23:05:36,480 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:36,480 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:36,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:36,611 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:36,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659360108] [2019-10-13 23:05:36,612 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:36,613 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:36,613 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402084197] [2019-10-13 23:05:36,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:36,613 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:36,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:36,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:36,614 INFO L87 Difference]: Start difference. First operand 5598 states and 8919 transitions. Second operand 3 states. [2019-10-13 23:05:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:37,024 INFO L93 Difference]: Finished difference Result 16677 states and 27208 transitions. [2019-10-13 23:05:37,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:37,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2019-10-13 23:05:37,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:37,114 INFO L225 Difference]: With dead ends: 16677 [2019-10-13 23:05:37,114 INFO L226 Difference]: Without dead ends: 11128 [2019-10-13 23:05:37,146 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 23:05:37,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11128 states. [2019-10-13 23:05:38,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11128 to 11093. [2019-10-13 23:05:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11093 states. [2019-10-13 23:05:38,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11093 states to 11093 states and 18091 transitions. [2019-10-13 23:05:38,566 INFO L78 Accepts]: Start accepts. Automaton has 11093 states and 18091 transitions. Word has length 120 [2019-10-13 23:05:38,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:38,567 INFO L462 AbstractCegarLoop]: Abstraction has 11093 states and 18091 transitions. [2019-10-13 23:05:38,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:38,568 INFO L276 IsEmpty]: Start isEmpty. Operand 11093 states and 18091 transitions. [2019-10-13 23:05:38,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:05:38,572 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:38,573 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:38,573 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:38,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:38,573 INFO L82 PathProgramCache]: Analyzing trace with hash 414298500, now seen corresponding path program 1 times [2019-10-13 23:05:38,574 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:38,574 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544838786] [2019-10-13 23:05:38,574 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:38,574 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:38,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:38,714 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544838786] [2019-10-13 23:05:38,714 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:38,714 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:38,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748988405] [2019-10-13 23:05:38,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:38,716 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:38,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:38,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:38,717 INFO L87 Difference]: Start difference. First operand 11093 states and 18091 transitions. Second operand 3 states. [2019-10-13 23:05:39,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:39,060 INFO L93 Difference]: Finished difference Result 11816 states and 19352 transitions. [2019-10-13 23:05:39,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:39,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-10-13 23:05:39,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:39,126 INFO L225 Difference]: With dead ends: 11816 [2019-10-13 23:05:39,127 INFO L226 Difference]: Without dead ends: 11803 [2019-10-13 23:05:39,136 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 23:05:39,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11803 states. [2019-10-13 23:05:39,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11803 to 11773. [2019-10-13 23:05:39,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11773 states. [2019-10-13 23:05:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11773 states to 11773 states and 19290 transitions. [2019-10-13 23:05:39,833 INFO L78 Accepts]: Start accepts. Automaton has 11773 states and 19290 transitions. Word has length 121 [2019-10-13 23:05:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:39,838 INFO L462 AbstractCegarLoop]: Abstraction has 11773 states and 19290 transitions. [2019-10-13 23:05:39,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:39,838 INFO L276 IsEmpty]: Start isEmpty. Operand 11773 states and 19290 transitions. [2019-10-13 23:05:39,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 23:05:39,844 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:39,845 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-10-13 23:05:39,845 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:39,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:39,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1018230350, now seen corresponding path program 1 times [2019-10-13 23:05:39,846 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:39,846 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079918294] [2019-10-13 23:05:39,846 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:39,847 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:39,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 23:05:40,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079918294] [2019-10-13 23:05:40,050 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:40,050 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:05:40,050 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015562757] [2019-10-13 23:05:40,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:05:40,052 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:40,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:05:40,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:05:40,053 INFO L87 Difference]: Start difference. First operand 11773 states and 19290 transitions. Second operand 5 states. [2019-10-13 23:05:40,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:40,458 INFO L93 Difference]: Finished difference Result 23690 states and 39514 transitions. [2019-10-13 23:05:40,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:05:40,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2019-10-13 23:05:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:40,535 INFO L225 Difference]: With dead ends: 23690 [2019-10-13 23:05:40,535 INFO L226 Difference]: Without dead ends: 11960 [2019-10-13 23:05:40,593 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:05:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11960 states. [2019-10-13 23:05:41,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11960 to 11957. [2019-10-13 23:05:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11957 states. [2019-10-13 23:05:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11957 states to 11957 states and 19636 transitions. [2019-10-13 23:05:41,316 INFO L78 Accepts]: Start accepts. Automaton has 11957 states and 19636 transitions. Word has length 179 [2019-10-13 23:05:41,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:41,317 INFO L462 AbstractCegarLoop]: Abstraction has 11957 states and 19636 transitions. [2019-10-13 23:05:41,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:05:41,317 INFO L276 IsEmpty]: Start isEmpty. Operand 11957 states and 19636 transitions. [2019-10-13 23:05:41,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-13 23:05:41,326 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:41,326 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-10-13 23:05:41,326 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:41,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:41,329 INFO L82 PathProgramCache]: Analyzing trace with hash 502984796, now seen corresponding path program 1 times [2019-10-13 23:05:41,329 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:41,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980494743] [2019-10-13 23:05:41,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:41,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:41,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 23:05:41,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980494743] [2019-10-13 23:05:41,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345515581] [2019-10-13 23:05:41,564 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 23:05:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:42,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 3359 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:05:42,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-13 23:05:42,288 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:42,549 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-10-13 23:05:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 23:05:42,936 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:42,936 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-13 23:05:42,936 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076301378] [2019-10-13 23:05:42,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:42,937 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:42,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:42,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:42,938 INFO L87 Difference]: Start difference. First operand 11957 states and 19636 transitions. Second operand 4 states. [2019-10-13 23:05:43,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:43,709 INFO L93 Difference]: Finished difference Result 25197 states and 42524 transitions. [2019-10-13 23:05:43,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:05:43,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 184 [2019-10-13 23:05:43,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:43,876 INFO L225 Difference]: With dead ends: 25197 [2019-10-13 23:05:43,876 INFO L226 Difference]: Without dead ends: 13283 [2019-10-13 23:05:43,940 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 367 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:05:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13283 states. [2019-10-13 23:05:44,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13283 to 13283. [2019-10-13 23:05:44,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13283 states. [2019-10-13 23:05:44,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13283 states to 13283 states and 22118 transitions. [2019-10-13 23:05:44,710 INFO L78 Accepts]: Start accepts. Automaton has 13283 states and 22118 transitions. Word has length 184 [2019-10-13 23:05:44,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:44,711 INFO L462 AbstractCegarLoop]: Abstraction has 13283 states and 22118 transitions. [2019-10-13 23:05:44,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:05:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 13283 states and 22118 transitions. [2019-10-13 23:05:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 23:05:44,942 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:44,942 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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] [2019-10-13 23:05:45,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:45,145 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:45,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:45,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1854757790, now seen corresponding path program 1 times [2019-10-13 23:05:45,146 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:45,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020377970] [2019-10-13 23:05:45,146 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:45,146 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:45,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 23:05:45,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020377970] [2019-10-13 23:05:45,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542633852] [2019-10-13 23:05:45,338 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 23:05:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:45,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:05:45,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 23:05:46,039 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 23:05:46,471 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:46,472 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:05:46,472 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948937573] [2019-10-13 23:05:46,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:46,473 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:46,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:46,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:46,474 INFO L87 Difference]: Start difference. First operand 13283 states and 22118 transitions. Second operand 4 states. [2019-10-13 23:05:47,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:47,844 INFO L93 Difference]: Finished difference Result 27849 states and 47454 transitions. [2019-10-13 23:05:47,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:05:47,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2019-10-13 23:05:47,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:47,931 INFO L225 Difference]: With dead ends: 27849 [2019-10-13 23:05:47,931 INFO L226 Difference]: Without dead ends: 14609 [2019-10-13 23:05:47,972 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 375 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:05:47,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14609 states. [2019-10-13 23:05:48,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14609 to 14609. [2019-10-13 23:05:48,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14609 states. [2019-10-13 23:05:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14609 states to 14609 states and 24600 transitions. [2019-10-13 23:05:48,634 INFO L78 Accepts]: Start accepts. Automaton has 14609 states and 24600 transitions. Word has length 189 [2019-10-13 23:05:48,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:48,634 INFO L462 AbstractCegarLoop]: Abstraction has 14609 states and 24600 transitions. [2019-10-13 23:05:48,635 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:05:48,635 INFO L276 IsEmpty]: Start isEmpty. Operand 14609 states and 24600 transitions. [2019-10-13 23:05:48,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-13 23:05:48,642 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:48,643 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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] [2019-10-13 23:05:48,852 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:48,853 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:48,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:48,853 INFO L82 PathProgramCache]: Analyzing trace with hash -295601390, now seen corresponding path program 1 times [2019-10-13 23:05:48,853 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:48,854 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143340513] [2019-10-13 23:05:48,854 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:48,854 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:48,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-10-13 23:05:49,073 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143340513] [2019-10-13 23:05:49,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334990770] [2019-10-13 23:05:49,074 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 23:05:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:49,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 3368 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:05:49,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 23:05:49,801 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-10-13 23:05:50,381 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:50,381 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:05:50,382 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387796601] [2019-10-13 23:05:50,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:50,383 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:50,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:50,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:50,383 INFO L87 Difference]: Start difference. First operand 14609 states and 24600 transitions. Second operand 4 states. [2019-10-13 23:05:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:50,927 INFO L93 Difference]: Finished difference Result 30501 states and 52384 transitions. [2019-10-13 23:05:50,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:05:50,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 193 [2019-10-13 23:05:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:51,012 INFO L225 Difference]: With dead ends: 30501 [2019-10-13 23:05:51,013 INFO L226 Difference]: Without dead ends: 15935 [2019-10-13 23:05:51,045 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 383 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:05:51,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15935 states. [2019-10-13 23:05:51,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15935 to 15935. [2019-10-13 23:05:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15935 states. [2019-10-13 23:05:51,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15935 states to 15935 states and 27082 transitions. [2019-10-13 23:05:51,659 INFO L78 Accepts]: Start accepts. Automaton has 15935 states and 27082 transitions. Word has length 193 [2019-10-13 23:05:51,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:51,660 INFO L462 AbstractCegarLoop]: Abstraction has 15935 states and 27082 transitions. [2019-10-13 23:05:51,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:05:51,660 INFO L276 IsEmpty]: Start isEmpty. Operand 15935 states and 27082 transitions. [2019-10-13 23:05:51,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 23:05:51,667 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:51,667 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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] [2019-10-13 23:05:51,877 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:51,877 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:51,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:51,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1313649928, now seen corresponding path program 1 times [2019-10-13 23:05:51,878 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:51,878 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555651683] [2019-10-13 23:05:51,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:51,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:51,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-13 23:05:52,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555651683] [2019-10-13 23:05:52,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868803802] [2019-10-13 23:05:52,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true