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_spec3_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:31:02,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:31:02,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:31:02,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:31:02,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:31:02,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:31:02,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:31:02,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:31:02,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:31:02,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:31:02,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:31:02,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:31:02,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:31:02,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:31:02,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:31:02,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:31:02,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:31:02,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:31:02,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:31:02,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:31:02,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:31:02,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:31:02,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:31:02,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:31:02,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:31:02,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:31:02,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:31:02,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:31:02,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:31:02,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:31:02,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:31:02,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:31:02,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:31:02,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:31:02,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:31:02,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:31:02,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:31:02,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:31:02,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:31:02,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:31:02,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:31:02,641 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 [2019-10-07 14:31:02,665 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:31:02,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:31:02,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:31:02,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:31:02,667 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:31:02,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:31:02,668 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:31:02,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:31:02,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:31:02,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:31:02,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:31:02,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:31:02,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:31:02,671 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:31:02,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:31:02,671 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:31:02,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:31:02,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:31:02,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:31:02,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:31:02,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:31:02,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:31:02,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:31:02,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:31:02,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:31:02,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:31:02,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:31:02,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:31:02,678 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 [2019-10-07 14:31:02,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:31:02,974 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:31:02,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:31:02,979 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:31:02,979 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:31:02,980 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_productSimulator.cil.c [2019-10-07 14:31:03,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eea6e650e/cd5038ce28634b509b77d47dbd099210/FLAGaa8d92a02 [2019-10-07 14:31:03,671 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:31:03,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_productSimulator.cil.c [2019-10-07 14:31:03,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eea6e650e/cd5038ce28634b509b77d47dbd099210/FLAGaa8d92a02 [2019-10-07 14:31:03,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eea6e650e/cd5038ce28634b509b77d47dbd099210 [2019-10-07 14:31:03,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:31:03,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:31:03,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:31:03,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:31:03,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:31:03,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:31:03" (1/1) ... [2019-10-07 14:31:03,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc90f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:31:03, skipping insertion in model container [2019-10-07 14:31:03,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:31:03" (1/1) ... [2019-10-07 14:31:03,915 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:31:04,027 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:31:04,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:31:04,850 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:31:05,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:31:05,124 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:31:05,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:31:05 WrapperNode [2019-10-07 14:31:05,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:31:05,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:31:05,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:31:05,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:31:05,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:31:05" (1/1) ... [2019-10-07 14:31:05,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:31:05" (1/1) ... [2019-10-07 14:31:05,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:31:05" (1/1) ... [2019-10-07 14:31:05,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:31:05" (1/1) ... [2019-10-07 14:31:05,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:31:05" (1/1) ... [2019-10-07 14:31:05,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:31:05" (1/1) ... [2019-10-07 14:31:05,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:31:05" (1/1) ... [2019-10-07 14:31:05,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:31:05,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:31:05,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:31:05,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:31:05,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:31:05" (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 [2019-10-07 14:31:05,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:31:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:31:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:31:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:31:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:31:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:31:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:31:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:31:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:31:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:31:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:31:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:31:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:31:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:31:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:31:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:31:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:31:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:31:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:31:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:31:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:31:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:31:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-07 14:31:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-07 14:31:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:31:05,453 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-07 14:31:05,453 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-07 14:31:05,453 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:31:05,453 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-07 14:31:05,453 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-07 14:31:05,453 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-07 14:31:05,454 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-07 14:31:05,454 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:31:05,454 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:31:05,454 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:31:05,454 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:31:05,454 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:31:05,454 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:31:05,455 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:31:05,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:31:05,455 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:31:05,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:31:05,455 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-07 14:31:05,455 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-07 14:31:05,456 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-07 14:31:05,456 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-07 14:31:05,456 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:31:05,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:31:05,456 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:31:05,456 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-07 14:31:05,456 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-07 14:31:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-07 14:31:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-07 14:31:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:31:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:31:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:31:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-07 14:31:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-07 14:31:05,458 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:31:05,458 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-07 14:31:05,458 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-07 14:31:05,458 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:31:05,458 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:31:05,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 14:31:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 14:31:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:31:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:31:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:31:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:31:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:31:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:31:05,460 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:31:05,460 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:31:05,460 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:31:05,460 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:31:05,460 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:31:05,460 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:31:05,461 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:31:05,461 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:31:05,461 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:31:05,461 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:31:05,461 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:31:05,461 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:31:05,462 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:31:05,462 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:31:05,462 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:31:05,462 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:31:05,462 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:31:05,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:31:05,462 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:31:05,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:31:05,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:31:05,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:31:05,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:31:05,463 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:31:05,463 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:31:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:31:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:31:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:31:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:31:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:31:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:31:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:31:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:31:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:31:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:31:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:31:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:31:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:31:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:31:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:31:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:31:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:31:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:31:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:31:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:31:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:31:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:31:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:31:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:31:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:31:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:31:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:31:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:31:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:31:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:31:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:31:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:31:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:31:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:31:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:31:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:31:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:31:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:31:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:31:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:31:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:31:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:31:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 14:31:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 14:31:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-07 14:31:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-07 14:31:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-07 14:31:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-07 14:31:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-07 14:31:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-07 14:31:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-07 14:31:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-07 14:31:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:31:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:31:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:31:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:31:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:31:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-07 14:31:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-07 14:31:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-07 14:31:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-07 14:31:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:31:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:31:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-07 14:31:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-07 14:31:05,474 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-07 14:31:05,474 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-07 14:31:05,474 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:31:05,474 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:31:05,474 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:31:05,474 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-07 14:31:05,474 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-07 14:31:05,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:31:05,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:31:05,475 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-07 14:31:05,475 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-07 14:31:05,475 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:31:05,475 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:31:05,476 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:31:05,476 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:31:05,476 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:31:05,476 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:31:05,476 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:31:05,476 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:31:05,477 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:31:05,477 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:31:05,477 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:31:05,477 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:31:05,477 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:31:05,477 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:31:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:31:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:31:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:31:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:31:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:31:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:31:05,478 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:31:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:31:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:31:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:31:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:31:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:31:05,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:31:10,642 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:31:10,643 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:31:10,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:31:10 BoogieIcfgContainer [2019-10-07 14:31:10,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:31:10,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:31:10,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:31:10,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:31:10,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:31:03" (1/3) ... [2019-10-07 14:31:10,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576f9d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:31:10, skipping insertion in model container [2019-10-07 14:31:10,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:31:05" (2/3) ... [2019-10-07 14:31:10,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576f9d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:31:10, skipping insertion in model container [2019-10-07 14:31:10,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:31:10" (3/3) ... [2019-10-07 14:31:10,657 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_productSimulator.cil.c [2019-10-07 14:31:10,668 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:31:10,679 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:31:10,691 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:31:10,730 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:31:10,730 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:31:10,730 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:31:10,730 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:31:10,730 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:31:10,731 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:31:10,731 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:31:10,731 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:31:10,768 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states. [2019-10-07 14:31:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-07 14:31:10,788 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:10,789 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:10,791 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:10,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:10,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1567062533, now seen corresponding path program 1 times [2019-10-07 14:31:10,807 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:10,807 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:10,807 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:10,808 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 14:31:11,542 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:11,544 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:31:11,544 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 14:31:11,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:31:11,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:31:11,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 14:31:11,577 INFO L87 Difference]: Start difference. First operand 731 states. Second operand 6 states. [2019-10-07 14:31:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:11,825 INFO L93 Difference]: Finished difference Result 1169 states and 1713 transitions. [2019-10-07 14:31:11,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:31:11,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2019-10-07 14:31:11,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:11,867 INFO L225 Difference]: With dead ends: 1169 [2019-10-07 14:31:11,867 INFO L226 Difference]: Without dead ends: 588 [2019-10-07 14:31:11,879 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:31:11,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-10-07 14:31:11,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2019-10-07 14:31:11,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-10-07 14:31:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 850 transitions. [2019-10-07 14:31:11,987 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 850 transitions. Word has length 107 [2019-10-07 14:31:11,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:11,990 INFO L462 AbstractCegarLoop]: Abstraction has 588 states and 850 transitions. [2019-10-07 14:31:11,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:31:11,990 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 850 transitions. [2019-10-07 14:31:11,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-07 14:31:11,995 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:11,995 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:11,995 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:11,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:11,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1392192250, now seen corresponding path program 1 times [2019-10-07 14:31:11,996 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:11,996 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:11,997 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:11,997 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 14:31:12,382 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:12,383 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:31:12,383 INFO L95 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 [2019-10-07 14:31:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:13,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 3322 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:31:13,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:31:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:31:13,217 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:31:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 14:31:13,339 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:31:13,339 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:31:13,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:31:13,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:31:13,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:31:13,355 INFO L87 Difference]: Start difference. First operand 588 states and 850 transitions. Second operand 3 states. [2019-10-07 14:31:13,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:13,471 INFO L93 Difference]: Finished difference Result 1665 states and 2445 transitions. [2019-10-07 14:31:13,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:31:13,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2019-10-07 14:31:13,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:13,494 INFO L225 Difference]: With dead ends: 1665 [2019-10-07 14:31:13,495 INFO L226 Difference]: Without dead ends: 1126 [2019-10-07 14:31:13,501 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:31:13,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2019-10-07 14:31:13,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1122. [2019-10-07 14:31:13,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2019-10-07 14:31:13,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1640 transitions. [2019-10-07 14:31:13,641 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1640 transitions. Word has length 108 [2019-10-07 14:31:13,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:13,643 INFO L462 AbstractCegarLoop]: Abstraction has 1122 states and 1640 transitions. [2019-10-07 14:31:13,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:31:13,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1640 transitions. [2019-10-07 14:31:13,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-07 14:31:13,656 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:13,656 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:13,868 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:13,869 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:13,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:13,869 INFO L82 PathProgramCache]: Analyzing trace with hash 71449972, now seen corresponding path program 1 times [2019-10-07 14:31:13,869 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:13,870 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:13,870 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:13,870 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:13,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 14:31:14,282 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:14,282 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:31:14,283 INFO L95 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 [2019-10-07 14:31:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:15,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 3322 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:31:15,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:31:15,083 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:31:15,083 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:31:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 14:31:15,222 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:31:15,222 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:31:15,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:31:15,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:31:15,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:31:15,223 INFO L87 Difference]: Start difference. First operand 1122 states and 1640 transitions. Second operand 3 states. [2019-10-07 14:31:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:15,382 INFO L93 Difference]: Finished difference Result 3124 states and 4646 transitions. [2019-10-07 14:31:15,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:31:15,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2019-10-07 14:31:15,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:15,402 INFO L225 Difference]: With dead ends: 3124 [2019-10-07 14:31:15,403 INFO L226 Difference]: Without dead ends: 2073 [2019-10-07 14:31:15,410 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:31:15,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2019-10-07 14:31:15,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2051. [2019-10-07 14:31:15,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2051 states. [2019-10-07 14:31:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 3009 transitions. [2019-10-07 14:31:15,574 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 3009 transitions. Word has length 109 [2019-10-07 14:31:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:15,577 INFO L462 AbstractCegarLoop]: Abstraction has 2051 states and 3009 transitions. [2019-10-07 14:31:15,577 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:31:15,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 3009 transitions. [2019-10-07 14:31:15,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-07 14:31:15,584 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:15,585 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:15,795 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:15,796 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:15,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:15,796 INFO L82 PathProgramCache]: Analyzing trace with hash 616910148, now seen corresponding path program 1 times [2019-10-07 14:31:15,796 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:15,797 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:15,797 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:15,797 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:15,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:16,165 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 14:31:16,166 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:16,166 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:31:16,166 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-07 14:31:16,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-07 14:31:16,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-07 14:31:16,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:31:16,167 INFO L87 Difference]: Start difference. First operand 2051 states and 3009 transitions. Second operand 11 states. [2019-10-07 14:31:22,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:22,901 INFO L93 Difference]: Finished difference Result 4109 states and 6109 transitions. [2019-10-07 14:31:22,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 14:31:22,902 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2019-10-07 14:31:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:22,934 INFO L225 Difference]: With dead ends: 4109 [2019-10-07 14:31:22,934 INFO L226 Difference]: Without dead ends: 4106 [2019-10-07 14:31:22,937 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-10-07 14:31:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2019-10-07 14:31:23,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4001. [2019-10-07 14:31:23,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4001 states. [2019-10-07 14:31:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 5964 transitions. [2019-10-07 14:31:23,210 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 5964 transitions. Word has length 110 [2019-10-07 14:31:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:23,210 INFO L462 AbstractCegarLoop]: Abstraction has 4001 states and 5964 transitions. [2019-10-07 14:31:23,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-07 14:31:23,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 5964 transitions. [2019-10-07 14:31:23,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-07 14:31:23,213 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:23,214 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:23,214 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:23,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1524009686, now seen corresponding path program 1 times [2019-10-07 14:31:23,215 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:23,215 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:23,215 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:23,215 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 14:31:23,380 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:23,380 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:31:23,380 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:31:23,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:31:23,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:31:23,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:31:23,381 INFO L87 Difference]: Start difference. First operand 4001 states and 5964 transitions. Second operand 3 states. [2019-10-07 14:31:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:23,699 INFO L93 Difference]: Finished difference Result 9791 states and 14976 transitions. [2019-10-07 14:31:23,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:31:23,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2019-10-07 14:31:23,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:23,743 INFO L225 Difference]: With dead ends: 9791 [2019-10-07 14:31:23,743 INFO L226 Difference]: Without dead ends: 5861 [2019-10-07 14:31:23,765 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:31:23,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5861 states. [2019-10-07 14:31:24,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5861 to 5751. [2019-10-07 14:31:24,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5751 states. [2019-10-07 14:31:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5751 states to 5751 states and 8601 transitions. [2019-10-07 14:31:24,102 INFO L78 Accepts]: Start accepts. Automaton has 5751 states and 8601 transitions. Word has length 111 [2019-10-07 14:31:24,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:24,102 INFO L462 AbstractCegarLoop]: Abstraction has 5751 states and 8601 transitions. [2019-10-07 14:31:24,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:31:24,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5751 states and 8601 transitions. [2019-10-07 14:31:24,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-07 14:31:24,105 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:24,106 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:24,106 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:24,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:24,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1253405958, now seen corresponding path program 1 times [2019-10-07 14:31:24,107 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:24,107 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:24,107 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:24,107 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:24,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 14:31:24,340 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:24,340 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:31:24,340 INFO L95 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 [2019-10-07 14:31:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:25,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 3323 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:31:25,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:31:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:31:25,175 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:31:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 14:31:25,292 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:31:25,292 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:31:25,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:31:25,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:31:25,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:31:25,293 INFO L87 Difference]: Start difference. First operand 5751 states and 8601 transitions. Second operand 3 states. [2019-10-07 14:31:25,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:25,668 INFO L93 Difference]: Finished difference Result 13323 states and 20208 transitions. [2019-10-07 14:31:25,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:31:25,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-10-07 14:31:25,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:25,727 INFO L225 Difference]: With dead ends: 13323 [2019-10-07 14:31:25,728 INFO L226 Difference]: Without dead ends: 7643 [2019-10-07 14:31:25,763 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:31:25,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7643 states. [2019-10-07 14:31:26,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7643 to 7533. [2019-10-07 14:31:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7533 states. [2019-10-07 14:31:26,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7533 states to 7533 states and 11264 transitions. [2019-10-07 14:31:26,199 INFO L78 Accepts]: Start accepts. Automaton has 7533 states and 11264 transitions. Word has length 110 [2019-10-07 14:31:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:26,200 INFO L462 AbstractCegarLoop]: Abstraction has 7533 states and 11264 transitions. [2019-10-07 14:31:26,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:31:26,200 INFO L276 IsEmpty]: Start isEmpty. Operand 7533 states and 11264 transitions. [2019-10-07 14:31:26,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-07 14:31:26,204 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:26,204 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:26,412 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:26,413 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:26,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:26,413 INFO L82 PathProgramCache]: Analyzing trace with hash 102908054, now seen corresponding path program 1 times [2019-10-07 14:31:26,414 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:26,414 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:26,415 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:26,415 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:26,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 14:31:26,760 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:26,761 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:31:26,761 INFO L95 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 [2019-10-07 14:31:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:27,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 3335 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 14:31:27,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:31:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:31:27,507 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:31:27,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 14:31:27,798 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:31:27,798 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-07 14:31:27,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-07 14:31:27,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-07 14:31:27,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:31:27,800 INFO L87 Difference]: Start difference. First operand 7533 states and 11264 transitions. Second operand 11 states. [2019-10-07 14:31:34,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:34,321 INFO L93 Difference]: Finished difference Result 21540 states and 32941 transitions. [2019-10-07 14:31:34,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-07 14:31:34,322 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 111 [2019-10-07 14:31:34,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:34,419 INFO L225 Difference]: With dead ends: 21540 [2019-10-07 14:31:34,419 INFO L226 Difference]: Without dead ends: 14078 [2019-10-07 14:31:34,473 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 216 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:31:34,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14078 states. [2019-10-07 14:31:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14078 to 14038. [2019-10-07 14:31:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14038 states. [2019-10-07 14:31:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14038 states to 14038 states and 20607 transitions. [2019-10-07 14:31:35,122 INFO L78 Accepts]: Start accepts. Automaton has 14038 states and 20607 transitions. Word has length 111 [2019-10-07 14:31:35,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:35,123 INFO L462 AbstractCegarLoop]: Abstraction has 14038 states and 20607 transitions. [2019-10-07 14:31:35,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-07 14:31:35,123 INFO L276 IsEmpty]: Start isEmpty. Operand 14038 states and 20607 transitions. [2019-10-07 14:31:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-07 14:31:35,133 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:35,133 INFO L385 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:35,342 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:35,343 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:35,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:35,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1098720543, now seen corresponding path program 1 times [2019-10-07 14:31:35,343 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:35,343 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:35,343 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:35,344 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:35,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 14:31:35,622 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:35,622 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:31:35,622 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-07 14:31:35,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-07 14:31:35,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-07 14:31:35,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:31:35,625 INFO L87 Difference]: Start difference. First operand 14038 states and 20607 transitions. Second operand 12 states. [2019-10-07 14:31:37,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:37,205 INFO L93 Difference]: Finished difference Result 27428 states and 40907 transitions. [2019-10-07 14:31:37,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 14:31:37,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2019-10-07 14:31:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:37,301 INFO L225 Difference]: With dead ends: 27428 [2019-10-07 14:31:37,301 INFO L226 Difference]: Without dead ends: 15358 [2019-10-07 14:31:37,345 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2019-10-07 14:31:37,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15358 states. [2019-10-07 14:31:37,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15358 to 14338. [2019-10-07 14:31:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14338 states. [2019-10-07 14:31:38,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14338 states to 14338 states and 20997 transitions. [2019-10-07 14:31:38,158 INFO L78 Accepts]: Start accepts. Automaton has 14338 states and 20997 transitions. Word has length 156 [2019-10-07 14:31:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:38,161 INFO L462 AbstractCegarLoop]: Abstraction has 14338 states and 20997 transitions. [2019-10-07 14:31:38,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-07 14:31:38,161 INFO L276 IsEmpty]: Start isEmpty. Operand 14338 states and 20997 transitions. [2019-10-07 14:31:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-07 14:31:38,181 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:38,181 INFO L385 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:38,182 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:38,182 INFO L82 PathProgramCache]: Analyzing trace with hash -823462001, now seen corresponding path program 1 times [2019-10-07 14:31:38,182 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:38,183 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:38,183 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:38,183 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-07 14:31:38,449 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:38,449 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:31:38,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:39,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 3985 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:31:39,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:31:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-07 14:31:39,441 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:31:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-07 14:31:39,661 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:31:39,661 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [13] total 14 [2019-10-07 14:31:39,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:31:39,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:31:39,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:31:39,664 INFO L87 Difference]: Start difference. First operand 14338 states and 20997 transitions. Second operand 3 states. [2019-10-07 14:31:40,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:40,061 INFO L93 Difference]: Finished difference Result 21387 states and 31224 transitions. [2019-10-07 14:31:40,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:31:40,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2019-10-07 14:31:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:40,149 INFO L225 Difference]: With dead ends: 21387 [2019-10-07 14:31:40,150 INFO L226 Difference]: Without dead ends: 14342 [2019-10-07 14:31:40,180 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:31:40,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14342 states. [2019-10-07 14:31:40,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14342 to 14338. [2019-10-07 14:31:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14338 states. [2019-10-07 14:31:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14338 states to 14338 states and 20811 transitions. [2019-10-07 14:31:40,963 INFO L78 Accepts]: Start accepts. Automaton has 14338 states and 20811 transitions. Word has length 198 [2019-10-07 14:31:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:40,963 INFO L462 AbstractCegarLoop]: Abstraction has 14338 states and 20811 transitions. [2019-10-07 14:31:40,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:31:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 14338 states and 20811 transitions. [2019-10-07 14:31:40,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-07 14:31:40,975 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:40,975 INFO L385 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:41,183 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:41,184 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:41,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:41,185 INFO L82 PathProgramCache]: Analyzing trace with hash -829822706, now seen corresponding path program 1 times [2019-10-07 14:31:41,185 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:41,185 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:41,185 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:41,186 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-07 14:31:41,374 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:41,375 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:31:41,375 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:31:41,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:31:41,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:31:41,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:31:41,376 INFO L87 Difference]: Start difference. First operand 14338 states and 20811 transitions. Second operand 7 states. [2019-10-07 14:31:45,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:45,631 INFO L93 Difference]: Finished difference Result 53686 states and 81900 transitions. [2019-10-07 14:31:45,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-07 14:31:45,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2019-10-07 14:31:45,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:45,893 INFO L225 Difference]: With dead ends: 53686 [2019-10-07 14:31:45,893 INFO L226 Difference]: Without dead ends: 39419 [2019-10-07 14:31:45,959 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:31:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39419 states. [2019-10-07 14:31:48,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39419 to 38786. [2019-10-07 14:31:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38786 states. [2019-10-07 14:31:48,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38786 states to 38786 states and 58320 transitions. [2019-10-07 14:31:48,613 INFO L78 Accepts]: Start accepts. Automaton has 38786 states and 58320 transitions. Word has length 159 [2019-10-07 14:31:48,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:48,614 INFO L462 AbstractCegarLoop]: Abstraction has 38786 states and 58320 transitions. [2019-10-07 14:31:48,614 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:31:48,614 INFO L276 IsEmpty]: Start isEmpty. Operand 38786 states and 58320 transitions. [2019-10-07 14:31:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-07 14:31:48,626 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:48,627 INFO L385 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:48,627 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:48,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:48,628 INFO L82 PathProgramCache]: Analyzing trace with hash -808884877, now seen corresponding path program 1 times [2019-10-07 14:31:48,628 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:48,628 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:48,628 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:48,628 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:48,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-07 14:31:48,935 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:48,935 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:31:48,935 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-07 14:31:48,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-07 14:31:48,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-07 14:31:48,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:31:48,939 INFO L87 Difference]: Start difference. First operand 38786 states and 58320 transitions. Second operand 16 states. [2019-10-07 14:32:04,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:32:04,213 INFO L93 Difference]: Finished difference Result 88849 states and 137401 transitions. [2019-10-07 14:32:04,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-10-07 14:32:04,213 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 165 [2019-10-07 14:32:04,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:32:04,591 INFO L225 Difference]: With dead ends: 88849 [2019-10-07 14:32:04,592 INFO L226 Difference]: Without dead ends: 54420 [2019-10-07 14:32:04,688 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=430, Invalid=1376, Unknown=0, NotChecked=0, Total=1806 [2019-10-07 14:32:04,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54420 states. [2019-10-07 14:32:06,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54420 to 52593. [2019-10-07 14:32:06,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52593 states. [2019-10-07 14:32:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52593 states to 52593 states and 79827 transitions. [2019-10-07 14:32:06,852 INFO L78 Accepts]: Start accepts. Automaton has 52593 states and 79827 transitions. Word has length 165 [2019-10-07 14:32:06,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:32:06,853 INFO L462 AbstractCegarLoop]: Abstraction has 52593 states and 79827 transitions. [2019-10-07 14:32:06,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-07 14:32:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 52593 states and 79827 transitions. [2019-10-07 14:32:06,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-07 14:32:06,868 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:32:06,869 INFO L385 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:32:06,869 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:32:06,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:32:06,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1324912233, now seen corresponding path program 1 times [2019-10-07 14:32:06,870 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:32:06,870 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:32:06,870 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:32:06,870 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:32:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:32:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:32:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:32:07,100 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:32:07,102 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:32:07,102 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:32:07,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:32:07,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:32:07,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:32:07,104 INFO L87 Difference]: Start difference. First operand 52593 states and 79827 transitions. Second operand 10 states. [2019-10-07 14:32:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:32:17,350 INFO L93 Difference]: Finished difference Result 200770 states and 326861 transitions. [2019-10-07 14:32:17,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 14:32:17,350 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 198 [2019-10-07 14:32:17,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:32:18,147 INFO L225 Difference]: With dead ends: 200770 [2019-10-07 14:32:18,147 INFO L226 Difference]: Without dead ends: 148248 [2019-10-07 14:32:18,346 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2019-10-07 14:32:18,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148248 states. [2019-10-07 14:32:26,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148248 to 146755. [2019-10-07 14:32:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146755 states. [2019-10-07 14:32:31,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146755 states to 146755 states and 233381 transitions. [2019-10-07 14:32:31,495 INFO L78 Accepts]: Start accepts. Automaton has 146755 states and 233381 transitions. Word has length 198 [2019-10-07 14:32:31,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:32:31,495 INFO L462 AbstractCegarLoop]: Abstraction has 146755 states and 233381 transitions. [2019-10-07 14:32:31,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:32:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand 146755 states and 233381 transitions. [2019-10-07 14:32:31,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-07 14:32:31,513 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:32:31,513 INFO L385 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:32:31,514 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:32:31,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:32:31,514 INFO L82 PathProgramCache]: Analyzing trace with hash 638208776, now seen corresponding path program 1 times [2019-10-07 14:32:31,514 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:32:31,514 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:32:31,515 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:32:31,515 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:32:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:32:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:32:31,739 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-07 14:32:31,739 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:32:31,740 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:32:31,741 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:32:31,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:32:31,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:32:31,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:32:31,742 INFO L87 Difference]: Start difference. First operand 146755 states and 233381 transitions. Second operand 10 states. [2019-10-07 14:32:43,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:32:43,157 INFO L93 Difference]: Finished difference Result 250127 states and 410132 transitions. [2019-10-07 14:32:43,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:32:43,157 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 204 [2019-10-07 14:32:43,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:32:44,147 INFO L225 Difference]: With dead ends: 250127 [2019-10-07 14:32:44,148 INFO L226 Difference]: Without dead ends: 152662 [2019-10-07 14:32:44,480 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2019-10-07 14:32:44,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152662 states. [2019-10-07 14:32:54,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152662 to 146891. [2019-10-07 14:32:54,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146891 states. [2019-10-07 14:32:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146891 states to 146891 states and 232539 transitions. [2019-10-07 14:32:55,385 INFO L78 Accepts]: Start accepts. Automaton has 146891 states and 232539 transitions. Word has length 204 [2019-10-07 14:32:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:32:55,386 INFO L462 AbstractCegarLoop]: Abstraction has 146891 states and 232539 transitions. [2019-10-07 14:32:55,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:32:55,386 INFO L276 IsEmpty]: Start isEmpty. Operand 146891 states and 232539 transitions. [2019-10-07 14:32:55,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-10-07 14:32:55,405 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:32:55,405 INFO L385 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:32:55,405 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:32:55,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:32:55,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1100737604, now seen corresponding path program 1 times [2019-10-07 14:32:55,406 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:32:55,406 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:32:55,407 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:32:55,407 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:32:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:32:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:32:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-07 14:32:55,698 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:32:55,699 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:32:55,699 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 14:32:55,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:32:55,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:32:55,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:32:55,700 INFO L87 Difference]: Start difference. First operand 146891 states and 232539 transitions. Second operand 14 states. [2019-10-07 14:33:18,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:33:18,240 INFO L93 Difference]: Finished difference Result 259434 states and 451858 transitions. [2019-10-07 14:33:18,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-07 14:33:18,241 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 208 [2019-10-07 14:33:18,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:33:19,813 INFO L225 Difference]: With dead ends: 259434 [2019-10-07 14:33:19,814 INFO L226 Difference]: Without dead ends: 259371 [2019-10-07 14:33:19,939 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=377, Invalid=1515, Unknown=0, NotChecked=0, Total=1892 [2019-10-07 14:33:20,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259371 states. [2019-10-07 14:33:36,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259371 to 250839. [2019-10-07 14:33:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250839 states. [2019-10-07 14:33:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250839 states to 250839 states and 422886 transitions. [2019-10-07 14:33:37,846 INFO L78 Accepts]: Start accepts. Automaton has 250839 states and 422886 transitions. Word has length 208 [2019-10-07 14:33:37,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:33:37,847 INFO L462 AbstractCegarLoop]: Abstraction has 250839 states and 422886 transitions. [2019-10-07 14:33:37,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:33:37,847 INFO L276 IsEmpty]: Start isEmpty. Operand 250839 states and 422886 transitions. [2019-10-07 14:33:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2019-10-07 14:33:37,861 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:33:37,862 INFO L385 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:33:37,862 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:33:37,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:33:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash -734447743, now seen corresponding path program 1 times [2019-10-07 14:33:37,862 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:33:37,862 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:33:37,863 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:33:37,863 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:33:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:33:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:33:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2019-10-07 14:33:38,196 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:33:38,197 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:33:38,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:33:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:33:45,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 5736 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:33:45,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:33:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 114 proven. 32 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-07 14:33:45,356 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:33:46,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:33:46,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:33:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2019-10-07 14:33:46,289 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:33:46,319 INFO L162 IcfgInterpreter]: Started Sifa with 168 locations of interest [2019-10-07 14:33:46,320 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:33:46,327 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:33:46,334 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:33:46,334 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:34:35,097 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 783 [2019-10-07 14:34:40,043 WARN L191 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 430 DAG size of output: 347 [2019-10-07 14:34:40,458 WARN L191 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 876 [2019-10-07 14:34:40,766 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 876 [2019-10-07 14:34:41,012 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 876 [2019-10-07 14:34:41,653 WARN L191 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:34:42,190 WARN L191 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:34:42,683 WARN L191 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:34:43,297 WARN L191 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:34:44,358 WARN L191 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 1078 DAG size of output: 1076 [2019-10-07 14:34:44,877 WARN L191 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:34:45,453 WARN L191 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:34:45,951 WARN L191 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:34:46,460 WARN L191 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:34:47,019 WARN L191 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:34:47,040 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 409 for LOIs [2019-10-07 14:34:47,275 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 751 [2019-10-07 14:34:47,388 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 751 [2019-10-07 14:34:48,196 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 951 [2019-10-07 14:34:48,198 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1128 for LOIs [2019-10-07 14:34:48,706 WARN L191 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 1128 [2019-10-07 14:34:49,200 WARN L191 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 1128 [2019-10-07 14:34:49,382 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:34:50,225 WARN L191 SmtUtils]: Spent 841.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:34:50,738 WARN L191 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 1128 [2019-10-07 14:34:51,224 WARN L191 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 1128 [2019-10-07 14:34:51,367 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:34:52,201 WARN L191 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:34:52,750 WARN L191 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:34:53,228 WARN L191 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:34:53,377 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:34:54,212 WARN L191 SmtUtils]: Spent 834.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:34:55,140 WARN L191 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 1314 DAG size of output: 1130 [2019-10-07 14:34:55,640 WARN L191 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:34:55,781 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:34:56,629 WARN L191 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:34:57,146 WARN L191 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:34:57,627 WARN L191 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:34:57,763 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:34:58,609 WARN L191 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:34:59,117 WARN L191 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:34:59,607 WARN L191 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:34:59,743 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:35:00,575 WARN L191 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:35:01,059 WARN L191 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:35:01,555 WARN L191 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:35:01,698 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:35:02,529 WARN L191 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:35:03,020 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:35:03,506 WARN L191 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:35:03,644 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:35:04,494 WARN L191 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:35:04,996 WARN L191 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:35:05,494 WARN L191 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:35:05,639 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:35:06,489 WARN L191 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:35:06,982 WARN L191 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:35:07,485 WARN L191 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:35:07,626 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:35:08,460 WARN L191 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:35:08,955 WARN L191 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:35:09,445 WARN L191 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:35:09,582 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:35:10,417 WARN L191 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:35:10,897 WARN L191 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:35:11,412 WARN L191 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:35:11,547 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:35:12,426 WARN L191 SmtUtils]: Spent 877.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:35:12,910 WARN L191 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:35:13,403 WARN L191 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 1130 [2019-10-07 14:35:13,543 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 483 [2019-10-07 14:35:14,392 WARN L191 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 1312 [2019-10-07 14:35:14,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:35:14,718 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 14:35:14,726 INFO L168 Benchmark]: Toolchain (without parser) took 250828.87 ms. Allocated memory was 142.1 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 100.9 MB in the beginning and 913.8 MB in the end (delta: -812.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2019-10-07 14:35:14,727 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 14:35:14,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1227.76 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 136.0 MB in the end (delta: -35.3 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2019-10-07 14:35:14,728 INFO L168 Benchmark]: Boogie Preprocessor took 247.15 ms. Allocated memory is still 205.5 MB. Free memory was 136.0 MB in the beginning and 125.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-10-07 14:35:14,736 INFO L168 Benchmark]: RCFGBuilder took 5271.86 ms. Allocated memory was 205.5 MB in the beginning and 296.7 MB in the end (delta: 91.2 MB). Free memory was 125.4 MB in the beginning and 143.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 136.3 MB. Max. memory is 7.1 GB. [2019-10-07 14:35:14,737 INFO L168 Benchmark]: TraceAbstraction took 244077.14 ms. Allocated memory was 296.7 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 143.7 MB in the beginning and 913.8 MB in the end (delta: -770.1 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2019-10-07 14:35:14,743 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1227.76 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 136.0 MB in the end (delta: -35.3 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 247.15 ms. Allocated memory is still 205.5 MB. Free memory was 136.0 MB in the beginning and 125.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5271.86 ms. Allocated memory was 205.5 MB in the beginning and 296.7 MB in the end (delta: 91.2 MB). Free memory was 125.4 MB in the beginning and 143.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 136.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244077.14 ms. Allocated memory was 296.7 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 143.7 MB in the beginning and 913.8 MB in the end (delta: -770.1 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...