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_spec13_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:05:43,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:05:43,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:05:43,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:05:43,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:05:43,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:05:43,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:05:43,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:05:43,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:05:43,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:05:43,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:05:43,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:05:43,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:05:43,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:05:43,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:05:43,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:05:43,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:05:43,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:05:43,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:05:43,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:05:43,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:05:43,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:05:43,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:05:43,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:05:43,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:05:43,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:05:43,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:05:43,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:05:43,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:05:43,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:05:43,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:05:43,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:05:43,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:05:43,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:05:43,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:05:43,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:05:43,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:05:43,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:05:43,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:05:43,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:05:43,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:05:43,226 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 [2019-10-15 03:05:43,254 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:05:43,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:05:43,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:05:43,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:05:43,257 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:05:43,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:05:43,257 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:05:43,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:05:43,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:05:43,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:05:43,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:05:43,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:05:43,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:05:43,260 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:05:43,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:05:43,260 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:05:43,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:05:43,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:05:43,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:05:43,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:05:43,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:05:43,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:05:43,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:05:43,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:05:43,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:05:43,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:05:43,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:05:43,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:05:43,263 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 [2019-10-15 03:05:43,659 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:05:43,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:05:43,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:05:43,690 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:05:43,691 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:05:43,692 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2019-10-15 03:05:43,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce156b384/c257582bfa0f44fa8b62c23d8ba1fd10/FLAG194399944 [2019-10-15 03:05:44,634 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:05:44,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2019-10-15 03:05:44,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce156b384/c257582bfa0f44fa8b62c23d8ba1fd10/FLAG194399944 [2019-10-15 03:05:44,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce156b384/c257582bfa0f44fa8b62c23d8ba1fd10 [2019-10-15 03:05:44,735 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:05:44,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:05:44,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:05:44,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:05:44,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:05:44,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:05:44" (1/1) ... [2019-10-15 03:05:44,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4559a4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:44, skipping insertion in model container [2019-10-15 03:05:44,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:05:44" (1/1) ... [2019-10-15 03:05:44,781 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:05:44,884 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:05:45,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:05:45,795 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:05:45,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:05:46,010 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:05:46,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:46 WrapperNode [2019-10-15 03:05:46,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:05:46,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:05:46,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:05:46,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:05:46,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:46" (1/1) ... [2019-10-15 03:05:46,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:46" (1/1) ... [2019-10-15 03:05:46,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:46" (1/1) ... [2019-10-15 03:05:46,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:46" (1/1) ... [2019-10-15 03:05:46,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:46" (1/1) ... [2019-10-15 03:05:46,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:46" (1/1) ... [2019-10-15 03:05:46,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:46" (1/1) ... [2019-10-15 03:05:46,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:05:46,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:05:46,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:05:46,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:05:46,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:46" (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 [2019-10-15 03:05:46,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:05:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:05:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:05:46,340 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:05:46,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:05:46,341 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:05:46,341 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:05:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:05:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:05:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:05:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:05:46,343 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:05:46,344 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:05:46,345 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:05:46,345 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:05:46,345 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:05:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:05:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:05:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:05:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:05:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:05:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:05:46,350 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:05:46,350 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:05:46,350 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:05:46,351 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:05:46,351 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:05:46,353 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:05:46,353 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:05:46,353 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:05:46,354 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:05:46,354 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:05:46,354 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:05:46,355 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:05:46,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:05:46,355 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:05:46,355 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:05:46,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:05:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:05:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:05:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:05:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:05:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:05:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:05:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:05:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:05:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:05:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:05:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:05:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:05:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:05:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:05:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:05:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:05:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:05:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:05:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:05:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:05:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:05:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:05:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:05:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:05:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:05:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:05:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:05:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:05:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-15 03:05:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-15 03:05:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:05:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:05:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:05:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:05:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:05:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:05:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:05:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:05:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:05:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:05:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:05:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:05:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:05:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:05:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:05:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:05:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:05:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:05:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:05:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:05:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:05:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:05:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:05:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:05:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:05:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:05:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:05:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:05:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:05:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:05:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:05:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:05:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:05:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:05:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:05:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:05:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:05:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:05:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:05:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:05:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:05:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:05:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:05:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:05:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:05:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:05:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:05:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:05:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:05:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:05:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:05:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:05:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:05:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:05:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:05:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:05:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:05:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:05:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:05:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:05:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:05:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:05:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:05:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:05:46,381 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:05:46,381 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:05:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:05:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:05:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:05:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-15 03:05:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-15 03:05:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:05:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:05:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:05:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:05:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:05:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:05:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:05:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:05:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:05:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:05:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:05:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:05:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:05:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:05:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:05:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:05:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:05:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:05:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:05:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:05:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:05:46,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:05:46,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:05:46,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:05:52,751 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:05:52,751 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:05:52,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:05:52 BoogieIcfgContainer [2019-10-15 03:05:52,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:05:52,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:05:52,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:05:52,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:05:52,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:05:44" (1/3) ... [2019-10-15 03:05:52,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15114d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:05:52, skipping insertion in model container [2019-10-15 03:05:52,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:46" (2/3) ... [2019-10-15 03:05:52,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15114d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:05:52, skipping insertion in model container [2019-10-15 03:05:52,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:05:52" (3/3) ... [2019-10-15 03:05:52,767 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2019-10-15 03:05:52,778 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:05:52,791 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:05:52,804 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:05:52,850 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:05:52,851 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:05:52,851 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:05:52,851 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:05:52,851 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:05:52,851 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:05:52,851 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:05:52,851 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:05:52,897 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states. [2019-10-15 03:05:52,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-15 03:05:52,927 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:05:52,929 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:05:52,932 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:05:52,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:05:52,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1111209335, now seen corresponding path program 1 times [2019-10-15 03:05:52,949 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:05:52,950 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171916681] [2019-10-15 03:05:52,950 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:52,950 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:52,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:05:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:05:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:05:53,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171916681] [2019-10-15 03:05:53,971 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:05:53,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:05:53,972 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678754340] [2019-10-15 03:05:53,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:05:53,981 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:05:53,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:05:53,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:05:54,001 INFO L87 Difference]: Start difference. First operand 587 states. Second operand 7 states. [2019-10-15 03:05:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:05:54,688 INFO L93 Difference]: Finished difference Result 1376 states and 2124 transitions. [2019-10-15 03:05:54,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 03:05:54,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2019-10-15 03:05:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:05:54,740 INFO L225 Difference]: With dead ends: 1376 [2019-10-15 03:05:54,741 INFO L226 Difference]: Without dead ends: 912 [2019-10-15 03:05:54,755 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:05:54,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2019-10-15 03:05:54,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 896. [2019-10-15 03:05:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2019-10-15 03:05:54,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1361 transitions. [2019-10-15 03:05:54,964 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1361 transitions. Word has length 127 [2019-10-15 03:05:54,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:05:54,966 INFO L462 AbstractCegarLoop]: Abstraction has 896 states and 1361 transitions. [2019-10-15 03:05:54,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:05:54,966 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1361 transitions. [2019-10-15 03:05:54,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 03:05:54,976 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:05:54,977 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:05:54,977 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:05:54,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:05:54,978 INFO L82 PathProgramCache]: Analyzing trace with hash 82949642, now seen corresponding path program 1 times [2019-10-15 03:05:54,978 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:05:54,978 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727320009] [2019-10-15 03:05:54,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:54,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:54,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:05:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:05:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:05:55,472 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727320009] [2019-10-15 03:05:55,472 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:05:55,472 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:05:55,473 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443869249] [2019-10-15 03:05:55,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:05:55,483 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:05:55,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:05:55,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:05:55,487 INFO L87 Difference]: Start difference. First operand 896 states and 1361 transitions. Second operand 7 states. [2019-10-15 03:05:55,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:05:55,643 INFO L93 Difference]: Finished difference Result 1353 states and 2073 transitions. [2019-10-15 03:05:55,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:05:55,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-10-15 03:05:55,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:05:55,655 INFO L225 Difference]: With dead ends: 1353 [2019-10-15 03:05:55,656 INFO L226 Difference]: Without dead ends: 918 [2019-10-15 03:05:55,662 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:05:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2019-10-15 03:05:55,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 910. [2019-10-15 03:05:55,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2019-10-15 03:05:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1381 transitions. [2019-10-15 03:05:55,792 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1381 transitions. Word has length 132 [2019-10-15 03:05:55,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:05:55,796 INFO L462 AbstractCegarLoop]: Abstraction has 910 states and 1381 transitions. [2019-10-15 03:05:55,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:05:55,796 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1381 transitions. [2019-10-15 03:05:55,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 03:05:55,804 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:05:55,804 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:05:55,805 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:05:55,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:05:55,805 INFO L82 PathProgramCache]: Analyzing trace with hash -220183967, now seen corresponding path program 1 times [2019-10-15 03:05:55,805 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:05:55,806 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272423265] [2019-10-15 03:05:55,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:55,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:55,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:05:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:05:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:05:56,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272423265] [2019-10-15 03:05:56,181 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:05:56,181 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:05:56,181 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646929814] [2019-10-15 03:05:56,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:05:56,182 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:05:56,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:05:56,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:05:56,183 INFO L87 Difference]: Start difference. First operand 910 states and 1381 transitions. Second operand 7 states. [2019-10-15 03:05:56,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:05:56,345 INFO L93 Difference]: Finished difference Result 1370 states and 2095 transitions. [2019-10-15 03:05:56,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:05:56,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-15 03:05:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:05:56,355 INFO L225 Difference]: With dead ends: 1370 [2019-10-15 03:05:56,355 INFO L226 Difference]: Without dead ends: 928 [2019-10-15 03:05:56,359 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:05:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2019-10-15 03:05:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 912. [2019-10-15 03:05:56,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2019-10-15 03:05:56,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1383 transitions. [2019-10-15 03:05:56,413 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1383 transitions. Word has length 131 [2019-10-15 03:05:56,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:05:56,415 INFO L462 AbstractCegarLoop]: Abstraction has 912 states and 1383 transitions. [2019-10-15 03:05:56,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:05:56,415 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1383 transitions. [2019-10-15 03:05:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 03:05:56,420 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:05:56,421 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:05:56,421 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:05:56,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:05:56,421 INFO L82 PathProgramCache]: Analyzing trace with hash 664979498, now seen corresponding path program 1 times [2019-10-15 03:05:56,422 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:05:56,422 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450924141] [2019-10-15 03:05:56,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:56,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:56,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:05:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:05:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:05:56,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450924141] [2019-10-15 03:05:56,710 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:05:56,710 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:05:56,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497939805] [2019-10-15 03:05:56,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:05:56,711 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:05:56,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:05:56,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:05:56,712 INFO L87 Difference]: Start difference. First operand 912 states and 1383 transitions. Second operand 7 states. [2019-10-15 03:05:56,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:05:56,840 INFO L93 Difference]: Finished difference Result 1373 states and 2098 transitions. [2019-10-15 03:05:56,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:05:56,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-10-15 03:05:56,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:05:56,852 INFO L225 Difference]: With dead ends: 1373 [2019-10-15 03:05:56,852 INFO L226 Difference]: Without dead ends: 930 [2019-10-15 03:05:56,857 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:05:56,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2019-10-15 03:05:57,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 914. [2019-10-15 03:05:57,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2019-10-15 03:05:57,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1385 transitions. [2019-10-15 03:05:57,039 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1385 transitions. Word has length 132 [2019-10-15 03:05:57,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:05:57,040 INFO L462 AbstractCegarLoop]: Abstraction has 914 states and 1385 transitions. [2019-10-15 03:05:57,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:05:57,040 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1385 transitions. [2019-10-15 03:05:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-15 03:05:57,046 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:05:57,046 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:05:57,046 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:05:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:05:57,047 INFO L82 PathProgramCache]: Analyzing trace with hash 968922338, now seen corresponding path program 1 times [2019-10-15 03:05:57,047 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:05:57,048 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114780271] [2019-10-15 03:05:57,048 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:57,048 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:57,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:05:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:05:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:05:57,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114780271] [2019-10-15 03:05:57,364 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:05:57,365 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:05:57,365 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236288481] [2019-10-15 03:05:57,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:05:57,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:05:57,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:05:57,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:05:57,367 INFO L87 Difference]: Start difference. First operand 914 states and 1385 transitions. Second operand 4 states. [2019-10-15 03:05:59,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:05:59,321 INFO L93 Difference]: Finished difference Result 1929 states and 2950 transitions. [2019-10-15 03:05:59,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:05:59,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2019-10-15 03:05:59,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:05:59,337 INFO L225 Difference]: With dead ends: 1929 [2019-10-15 03:05:59,337 INFO L226 Difference]: Without dead ends: 1360 [2019-10-15 03:05:59,341 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:05:59,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2019-10-15 03:05:59,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1341. [2019-10-15 03:05:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2019-10-15 03:05:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2001 transitions. [2019-10-15 03:05:59,413 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2001 transitions. Word has length 136 [2019-10-15 03:05:59,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:05:59,414 INFO L462 AbstractCegarLoop]: Abstraction has 1341 states and 2001 transitions. [2019-10-15 03:05:59,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:05:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2001 transitions. [2019-10-15 03:05:59,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-15 03:05:59,419 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:05:59,420 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:05:59,420 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:05:59,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:05:59,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1326904735, now seen corresponding path program 1 times [2019-10-15 03:05:59,421 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:05:59,421 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178375408] [2019-10-15 03:05:59,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:59,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:59,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:05:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:05:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:05:59,654 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178375408] [2019-10-15 03:05:59,655 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:05:59,655 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:05:59,655 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854307445] [2019-10-15 03:05:59,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:05:59,656 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:05:59,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:05:59,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:05:59,657 INFO L87 Difference]: Start difference. First operand 1341 states and 2001 transitions. Second operand 4 states. [2019-10-15 03:06:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:01,432 INFO L93 Difference]: Finished difference Result 5137 states and 8024 transitions. [2019-10-15 03:06:01,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:06:01,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2019-10-15 03:06:01,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:01,475 INFO L225 Difference]: With dead ends: 5137 [2019-10-15 03:06:01,475 INFO L226 Difference]: Without dead ends: 3833 [2019-10-15 03:06:01,490 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:06:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2019-10-15 03:06:01,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3780. [2019-10-15 03:06:01,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3780 states. [2019-10-15 03:06:01,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 5804 transitions. [2019-10-15 03:06:01,720 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 5804 transitions. Word has length 139 [2019-10-15 03:06:01,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:01,721 INFO L462 AbstractCegarLoop]: Abstraction has 3780 states and 5804 transitions. [2019-10-15 03:06:01,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:01,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 5804 transitions. [2019-10-15 03:06:01,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 03:06:01,727 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:01,727 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:01,727 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:01,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:01,728 INFO L82 PathProgramCache]: Analyzing trace with hash -894129278, now seen corresponding path program 1 times [2019-10-15 03:06:01,728 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:01,729 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998290572] [2019-10-15 03:06:01,729 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:01,729 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:01,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:02,024 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:02,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998290572] [2019-10-15 03:06:02,025 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:02,025 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:06:02,025 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126467030] [2019-10-15 03:06:02,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:02,026 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:02,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:02,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:02,027 INFO L87 Difference]: Start difference. First operand 3780 states and 5804 transitions. Second operand 5 states. [2019-10-15 03:06:02,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:02,983 INFO L93 Difference]: Finished difference Result 6450 states and 9952 transitions. [2019-10-15 03:06:02,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:06:02,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2019-10-15 03:06:02,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:03,022 INFO L225 Difference]: With dead ends: 6450 [2019-10-15 03:06:03,022 INFO L226 Difference]: Without dead ends: 3820 [2019-10-15 03:06:03,041 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:06:03,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2019-10-15 03:06:03,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 3795. [2019-10-15 03:06:03,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3795 states. [2019-10-15 03:06:03,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3795 states to 3795 states and 5825 transitions. [2019-10-15 03:06:03,397 INFO L78 Accepts]: Start accepts. Automaton has 3795 states and 5825 transitions. Word has length 140 [2019-10-15 03:06:03,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:03,399 INFO L462 AbstractCegarLoop]: Abstraction has 3795 states and 5825 transitions. [2019-10-15 03:06:03,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:03,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3795 states and 5825 transitions. [2019-10-15 03:06:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 03:06:03,411 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:03,412 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:03,413 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:03,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:03,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1188179512, now seen corresponding path program 1 times [2019-10-15 03:06:03,419 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:03,420 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603493076] [2019-10-15 03:06:03,421 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:03,421 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:03,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:06:03,770 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603493076] [2019-10-15 03:06:03,771 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:03,771 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:06:03,771 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042733399] [2019-10-15 03:06:03,772 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:03,772 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:03,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:03,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:06:03,774 INFO L87 Difference]: Start difference. First operand 3795 states and 5825 transitions. Second operand 4 states. [2019-10-15 03:06:04,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:04,017 INFO L93 Difference]: Finished difference Result 6980 states and 10991 transitions. [2019-10-15 03:06:04,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:06:04,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-15 03:06:04,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:04,057 INFO L225 Difference]: With dead ends: 6980 [2019-10-15 03:06:04,057 INFO L226 Difference]: Without dead ends: 4089 [2019-10-15 03:06:04,085 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:04,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4089 states. [2019-10-15 03:06:04,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4089 to 4089. [2019-10-15 03:06:04,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4089 states. [2019-10-15 03:06:04,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 6315 transitions. [2019-10-15 03:06:04,370 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 6315 transitions. Word has length 145 [2019-10-15 03:06:04,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:04,371 INFO L462 AbstractCegarLoop]: Abstraction has 4089 states and 6315 transitions. [2019-10-15 03:06:04,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 6315 transitions. [2019-10-15 03:06:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 03:06:04,376 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:04,376 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:04,376 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:04,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:04,377 INFO L82 PathProgramCache]: Analyzing trace with hash -235512630, now seen corresponding path program 1 times [2019-10-15 03:06:04,377 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:04,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561722942] [2019-10-15 03:06:04,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:04,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:04,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:06:04,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561722942] [2019-10-15 03:06:04,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542904270] [2019-10-15 03:06:04,587 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 [2019-10-15 03:06:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:05,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:06:05,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:06:05,360 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:06:05,605 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:05,605 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-10-15 03:06:05,605 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057798982] [2019-10-15 03:06:05,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:05,606 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:05,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:05,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:05,609 INFO L87 Difference]: Start difference. First operand 4089 states and 6315 transitions. Second operand 4 states. [2019-10-15 03:06:05,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:05,845 INFO L93 Difference]: Finished difference Result 8195 states and 12858 transitions. [2019-10-15 03:06:05,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:05,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-15 03:06:05,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:05,885 INFO L225 Difference]: With dead ends: 8195 [2019-10-15 03:06:05,885 INFO L226 Difference]: Without dead ends: 4143 [2019-10-15 03:06:05,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:06:05,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2019-10-15 03:06:06,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2019-10-15 03:06:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4143 states. [2019-10-15 03:06:06,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 6369 transitions. [2019-10-15 03:06:06,139 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 6369 transitions. Word has length 145 [2019-10-15 03:06:06,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:06,140 INFO L462 AbstractCegarLoop]: Abstraction has 4143 states and 6369 transitions. [2019-10-15 03:06:06,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:06,140 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 6369 transitions. [2019-10-15 03:06:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-15 03:06:06,145 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:06,145 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:06,353 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:06,354 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:06,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:06,355 INFO L82 PathProgramCache]: Analyzing trace with hash 679132033, now seen corresponding path program 1 times [2019-10-15 03:06:06,355 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:06,355 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90166662] [2019-10-15 03:06:06,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:06,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:06,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:06,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90166662] [2019-10-15 03:06:06,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804608660] [2019-10-15 03:06:06,573 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 [2019-10-15 03:06:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:07,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:06:07,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:06:07,420 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:06:07,800 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:06:07,801 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-15 03:06:07,801 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656586110] [2019-10-15 03:06:07,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:07,802 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:07,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:07,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:07,802 INFO L87 Difference]: Start difference. First operand 4143 states and 6369 transitions. Second operand 5 states. [2019-10-15 03:06:08,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:08,064 INFO L93 Difference]: Finished difference Result 8276 states and 12880 transitions. [2019-10-15 03:06:08,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:08,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-10-15 03:06:08,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:08,119 INFO L225 Difference]: With dead ends: 8276 [2019-10-15 03:06:08,120 INFO L226 Difference]: Without dead ends: 4134 [2019-10-15 03:06:08,150 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:06:08,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2019-10-15 03:06:08,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 4134. [2019-10-15 03:06:08,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4134 states. [2019-10-15 03:06:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4134 states to 4134 states and 6333 transitions. [2019-10-15 03:06:08,414 INFO L78 Accepts]: Start accepts. Automaton has 4134 states and 6333 transitions. Word has length 147 [2019-10-15 03:06:08,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:08,416 INFO L462 AbstractCegarLoop]: Abstraction has 4134 states and 6333 transitions. [2019-10-15 03:06:08,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:08,417 INFO L276 IsEmpty]: Start isEmpty. Operand 4134 states and 6333 transitions. [2019-10-15 03:06:08,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-15 03:06:08,422 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:08,422 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:08,633 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:08,633 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:08,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:08,634 INFO L82 PathProgramCache]: Analyzing trace with hash 611716150, now seen corresponding path program 1 times [2019-10-15 03:06:08,634 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:08,634 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936985200] [2019-10-15 03:06:08,634 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:08,634 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:08,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:08,892 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 03:06:08,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936985200] [2019-10-15 03:06:08,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288456848] [2019-10-15 03:06:08,893 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 [2019-10-15 03:06:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:09,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:06:09,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:06:10,433 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:06:11,116 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:11,116 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-10-15 03:06:11,117 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951369814] [2019-10-15 03:06:11,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:11,119 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:11,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:11,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:06:11,120 INFO L87 Difference]: Start difference. First operand 4134 states and 6333 transitions. Second operand 5 states. [2019-10-15 03:06:12,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:12,744 INFO L93 Difference]: Finished difference Result 10619 states and 16979 transitions. [2019-10-15 03:06:12,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:06:12,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-10-15 03:06:12,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:12,804 INFO L225 Difference]: With dead ends: 10619 [2019-10-15 03:06:12,804 INFO L226 Difference]: Without dead ends: 6522 [2019-10-15 03:06:12,834 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 286 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:06:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6522 states. [2019-10-15 03:06:13,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6522 to 6443. [2019-10-15 03:06:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6443 states. [2019-10-15 03:06:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6443 states to 6443 states and 10008 transitions. [2019-10-15 03:06:13,148 INFO L78 Accepts]: Start accepts. Automaton has 6443 states and 10008 transitions. Word has length 147 [2019-10-15 03:06:13,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:13,149 INFO L462 AbstractCegarLoop]: Abstraction has 6443 states and 10008 transitions. [2019-10-15 03:06:13,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:13,149 INFO L276 IsEmpty]: Start isEmpty. Operand 6443 states and 10008 transitions. [2019-10-15 03:06:13,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 03:06:13,154 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:13,154 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:13,363 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:13,366 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:13,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:13,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1998222068, now seen corresponding path program 1 times [2019-10-15 03:06:13,367 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:13,367 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720771044] [2019-10-15 03:06:13,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:13,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:13,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:13,625 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720771044] [2019-10-15 03:06:13,625 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112296090] [2019-10-15 03:06:13,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:14,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-15 03:06:14,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 03:06:14,941 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:15,776 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:15,776 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2019-10-15 03:06:15,776 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587232848] [2019-10-15 03:06:15,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:15,777 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:15,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:15,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:06:15,778 INFO L87 Difference]: Start difference. First operand 6443 states and 10008 transitions. Second operand 7 states.