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 -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:19:52,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:19:52,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:19:52,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:19:52,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:19:52,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:19:52,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:19:52,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:19:52,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:19:52,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:19:52,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:19:52,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:19:52,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:19:52,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:19:52,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:19:52,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:19:52,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:19:52,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:19:52,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:19:52,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:19:52,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:19:52,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:19:52,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:19:52,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:19:52,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:19:52,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:19:52,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:19:52,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:19:52,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:19:52,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:19:52,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:19:52,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:19:52,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:19:52,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:19:52,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:19:52,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:19:52,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:19:52,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:19:52,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:19:52,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:19:52,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:19:52,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:19:52,452 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:19:52,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:19:52,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:19:52,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:19:52,454 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:19:52,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:19:52,454 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:19:52,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:19:52,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:19:52,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:19:52,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:19:52,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:19:52,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:19:52,455 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:19:52,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:19:52,456 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:19:52,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:19:52,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:19:52,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:19:52,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:19:52,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:19:52,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:52,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:19:52,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:19:52,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:19:52,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:19:52,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:19:52,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:19:52,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:19:52,774 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:19:52,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:19:52,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:19:52,800 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:19:52,800 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:19:52,801 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c [2019-10-13 19:19:52,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07cc42f74/54dcacff3dc149c8905b7fe3193bb7eb/FLAGc158b5932 [2019-10-13 19:19:53,504 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:19:53,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c [2019-10-13 19:19:53,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07cc42f74/54dcacff3dc149c8905b7fe3193bb7eb/FLAGc158b5932 [2019-10-13 19:19:53,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07cc42f74/54dcacff3dc149c8905b7fe3193bb7eb [2019-10-13 19:19:53,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:19:53,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:19:53,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:53,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:19:53,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:19:53,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:53" (1/1) ... [2019-10-13 19:19:53,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0cb0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:53, skipping insertion in model container [2019-10-13 19:19:53,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:53" (1/1) ... [2019-10-13 19:19:53,694 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:19:53,770 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:19:54,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:54,501 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:19:54,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:54,750 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:19:54,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:54 WrapperNode [2019-10-13 19:19:54,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:54,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:19:54,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:19:54,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:19:54,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:54" (1/1) ... [2019-10-13 19:19:54,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:54" (1/1) ... [2019-10-13 19:19:54,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:54" (1/1) ... [2019-10-13 19:19:54,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:54" (1/1) ... [2019-10-13 19:19:54,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:54" (1/1) ... [2019-10-13 19:19:54,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:54" (1/1) ... [2019-10-13 19:19:54,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:54" (1/1) ... [2019-10-13 19:19:54,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:19:54,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:19:54,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:19:54,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:19:54,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:55,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:19:55,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:19:55,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:19:55,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:19:55,049 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:19:55,050 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:19:55,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-13 19:19:55,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-13 19:19:55,050 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:19:55,050 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:19:55,051 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:19:55,051 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:19:55,052 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:19:55,052 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:19:55,053 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:19:55,053 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:19:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:19:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:19:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:19:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:19:55,056 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:19:55,056 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:19:55,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:19:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:19:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:19:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:19:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:19:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:19:55,058 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:19:55,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:19:55,058 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:19:55,058 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:19:55,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:19:55,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:19:55,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:19:55,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:19:55,059 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:19:55,059 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:19:55,059 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:19:55,060 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:19:55,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:19:55,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:19:55,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:19:55,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:19:55,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:19:55,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:19:55,062 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:19:55,062 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:19:55,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:19:55,062 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:19:55,062 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:19:55,063 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:19:55,063 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 19:19:55,063 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:19:55,063 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:19:55,063 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:19:55,063 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:19:55,064 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:19:55,064 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:19:55,064 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:19:55,064 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:19:55,064 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:19:55,064 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:19:55,065 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:19:55,065 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 19:19:55,065 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:19:55,065 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:19:55,065 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:19:55,066 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:19:55,066 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 19:19:55,066 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:19:55,067 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:19:55,067 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:19:55,067 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 19:19:55,068 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:19:55,068 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 19:19:55,068 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:19:55,069 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:19:55,069 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 19:19:55,069 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 19:19:55,069 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:19:55,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:19:55,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:19:55,070 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:19:55,071 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:19:55,071 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:19:55,071 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:19:55,072 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:19:55,072 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:19:55,072 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:19:55,073 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:19:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:19:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:19:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:19:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-13 19:19:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:19:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-13 19:19:55,075 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:19:55,075 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:19:55,075 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:19:55,075 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:19:55,075 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:19:55,075 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:19:55,076 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:19:55,076 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:19:55,076 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:19:55,076 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:19:55,076 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:19:55,076 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:19:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:19:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:19:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:19:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:19:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:19:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:19:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:19:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:19:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:19:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:19:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:19:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:19:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:19:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:19:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:19:55,081 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:19:55,082 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:19:55,082 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:19:55,082 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:19:55,082 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:19:55,082 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:19:55,082 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:19:55,083 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:19:55,083 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:19:55,084 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:19:55,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:19:55,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:19:55,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:19:55,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:19:55,086 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:19:55,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:19:55,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:19:55,091 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:19:55,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:19:55,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:19:55,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:19:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:19:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:19:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:19:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:19:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:19:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:19:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:19:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:19:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:19:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 19:19:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 19:19:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:19:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:19:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 19:19:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:19:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:19:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:19:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:19:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:19:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 19:19:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:19:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:19:55,102 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:19:55,102 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 19:19:55,102 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:19:55,102 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:19:55,102 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:19:55,102 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 19:19:55,102 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 19:19:55,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:19:55,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:19:55,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:19:57,399 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:19:57,399 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:19:57,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:57 BoogieIcfgContainer [2019-10-13 19:19:57,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:19:57,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:19:57,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:19:57,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:19:57,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:19:53" (1/3) ... [2019-10-13 19:19:57,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9ae666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:57, skipping insertion in model container [2019-10-13 19:19:57,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:54" (2/3) ... [2019-10-13 19:19:57,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9ae666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:57, skipping insertion in model container [2019-10-13 19:19:57,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:57" (3/3) ... [2019-10-13 19:19:57,411 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product32.cil.c [2019-10-13 19:19:57,422 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:19:57,432 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:19:57,444 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:19:57,478 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:19:57,479 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:19:57,479 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:19:57,479 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:19:57,479 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:19:57,479 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:19:57,479 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:19:57,480 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:19:57,517 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states. [2019-10-13 19:19:57,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 19:19:57,534 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:57,535 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:57,538 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:57,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:57,544 INFO L82 PathProgramCache]: Analyzing trace with hash -2027146740, now seen corresponding path program 1 times [2019-10-13 19:19:57,553 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:57,553 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451726368] [2019-10-13 19:19:57,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:57,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:57,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,076 WARN L191 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:19:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,272 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:19:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,509 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:19:59,509 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451726368] [2019-10-13 19:19:59,510 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121041958] [2019-10-13 19:19:59,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 2890 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:20:00,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:20:00,147 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:00,148 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-10-13 19:20:00,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224791060] [2019-10-13 19:20:00,157 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:20:00,157 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:00,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:20:00,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:00,171 INFO L87 Difference]: Start difference. First operand 851 states. Second operand 2 states. [2019-10-13 19:20:00,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:00,273 INFO L93 Difference]: Finished difference Result 1381 states and 2213 transitions. [2019-10-13 19:20:00,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:20:00,274 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 113 [2019-10-13 19:20:00,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:00,303 INFO L225 Difference]: With dead ends: 1381 [2019-10-13 19:20:00,304 INFO L226 Difference]: Without dead ends: 698 [2019-10-13 19:20:00,317 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:00,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2019-10-13 19:20:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2019-10-13 19:20:00,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2019-10-13 19:20:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1098 transitions. [2019-10-13 19:20:00,433 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1098 transitions. Word has length 113 [2019-10-13 19:20:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:00,435 INFO L462 AbstractCegarLoop]: Abstraction has 698 states and 1098 transitions. [2019-10-13 19:20:00,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:20:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1098 transitions. [2019-10-13 19:20:00,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 19:20:00,441 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:00,441 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:00,649 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:00,652 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:00,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:00,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1220182100, now seen corresponding path program 1 times [2019-10-13 19:20:00,653 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:00,653 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244178357] [2019-10-13 19:20:00,654 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:00,654 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:00,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,695 WARN L191 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:20:02,106 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244178357] [2019-10-13 19:20:02,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608776118] [2019-10-13 19:20:02,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:02,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:20:02,694 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:02,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2019-10-13 19:20:02,694 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325058860] [2019-10-13 19:20:02,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:02,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:02,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:02,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:02,697 INFO L87 Difference]: Start difference. First operand 698 states and 1098 transitions. Second operand 4 states. [2019-10-13 19:20:02,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:02,853 INFO L93 Difference]: Finished difference Result 1379 states and 2186 transitions. [2019-10-13 19:20:02,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:02,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-10-13 19:20:02,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:02,860 INFO L225 Difference]: With dead ends: 1379 [2019-10-13 19:20:02,860 INFO L226 Difference]: Without dead ends: 707 [2019-10-13 19:20:02,865 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:20:02,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2019-10-13 19:20:02,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2019-10-13 19:20:02,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-10-13 19:20:02,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1112 transitions. [2019-10-13 19:20:02,916 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1112 transitions. Word has length 113 [2019-10-13 19:20:02,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:02,916 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 1112 transitions. [2019-10-13 19:20:02,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:02,917 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1112 transitions. [2019-10-13 19:20:02,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-13 19:20:02,925 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:02,925 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:03,134 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:03,135 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:03,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:03,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1088965156, now seen corresponding path program 1 times [2019-10-13 19:20:03,136 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:03,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273581386] [2019-10-13 19:20:03,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:03,137 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:03,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,082 WARN L191 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:20:04,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273581386] [2019-10-13 19:20:04,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791823911] [2019-10-13 19:20:04,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:05,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:05,067 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:20:05,067 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:05,068 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:20:05,068 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554124050] [2019-10-13 19:20:05,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:05,069 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:05,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:05,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:05,069 INFO L87 Difference]: Start difference. First operand 707 states and 1112 transitions. Second operand 4 states. [2019-10-13 19:20:05,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:05,341 INFO L93 Difference]: Finished difference Result 1425 states and 2271 transitions. [2019-10-13 19:20:05,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:05,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2019-10-13 19:20:05,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:05,360 INFO L225 Difference]: With dead ends: 1425 [2019-10-13 19:20:05,360 INFO L226 Difference]: Without dead ends: 746 [2019-10-13 19:20:05,365 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:05,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2019-10-13 19:20:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2019-10-13 19:20:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-10-13 19:20:05,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1186 transitions. [2019-10-13 19:20:05,427 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1186 transitions. Word has length 115 [2019-10-13 19:20:05,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:05,428 INFO L462 AbstractCegarLoop]: Abstraction has 746 states and 1186 transitions. [2019-10-13 19:20:05,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:05,428 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1186 transitions. [2019-10-13 19:20:05,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 19:20:05,434 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:05,434 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:05,641 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:05,641 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:05,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:05,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1537184166, now seen corresponding path program 1 times [2019-10-13 19:20:05,642 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:05,643 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674971824] [2019-10-13 19:20:05,643 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:05,643 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:05,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,575 WARN L191 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,924 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:20:06,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674971824] [2019-10-13 19:20:06,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236979259] [2019-10-13 19:20:06,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:07,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:20:07,633 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:07,633 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 13 [2019-10-13 19:20:07,633 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072744317] [2019-10-13 19:20:07,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:07,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:07,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:07,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:07,635 INFO L87 Difference]: Start difference. First operand 746 states and 1186 transitions. Second operand 7 states. [2019-10-13 19:20:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:07,811 INFO L93 Difference]: Finished difference Result 1478 states and 2362 transitions. [2019-10-13 19:20:07,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:07,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2019-10-13 19:20:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:07,818 INFO L225 Difference]: With dead ends: 1478 [2019-10-13 19:20:07,819 INFO L226 Difference]: Without dead ends: 760 [2019-10-13 19:20:07,823 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:20:07,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2019-10-13 19:20:07,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 753. [2019-10-13 19:20:07,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-10-13 19:20:07,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1197 transitions. [2019-10-13 19:20:07,859 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1197 transitions. Word has length 117 [2019-10-13 19:20:07,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:07,860 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 1197 transitions. [2019-10-13 19:20:07,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:07,860 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1197 transitions. [2019-10-13 19:20:07,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 19:20:07,866 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:07,866 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:08,082 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:08,082 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:08,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:08,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1752638134, now seen corresponding path program 1 times [2019-10-13 19:20:08,086 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:08,086 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108851153] [2019-10-13 19:20:08,086 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:08,087 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:08,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,030 WARN L191 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:09,362 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108851153] [2019-10-13 19:20:09,362 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902813225] [2019-10-13 19:20:09,363 INFO L94 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 [2019-10-13 19:20:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:09,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:09,929 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:20:09,929 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:09,929 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:20:09,930 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109248384] [2019-10-13 19:20:09,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:09,930 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:09,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:09,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:09,931 INFO L87 Difference]: Start difference. First operand 753 states and 1197 transitions. Second operand 4 states. [2019-10-13 19:20:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:10,025 INFO L93 Difference]: Finished difference Result 1491 states and 2382 transitions. [2019-10-13 19:20:10,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:10,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 19:20:10,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:10,031 INFO L225 Difference]: With dead ends: 1491 [2019-10-13 19:20:10,031 INFO L226 Difference]: Without dead ends: 764 [2019-10-13 19:20:10,035 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:10,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2019-10-13 19:20:10,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 762. [2019-10-13 19:20:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2019-10-13 19:20:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1205 transitions. [2019-10-13 19:20:10,065 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1205 transitions. Word has length 118 [2019-10-13 19:20:10,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:10,065 INFO L462 AbstractCegarLoop]: Abstraction has 762 states and 1205 transitions. [2019-10-13 19:20:10,065 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:10,065 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1205 transitions. [2019-10-13 19:20:10,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 19:20:10,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:10,069 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:20:10,275 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:10,275 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:10,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:10,276 INFO L82 PathProgramCache]: Analyzing trace with hash 718255648, now seen corresponding path program 1 times [2019-10-13 19:20:10,276 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:10,276 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069398299] [2019-10-13 19:20:10,277 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:10,277 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:10,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,156 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:20:11,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069398299] [2019-10-13 19:20:11,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107651663] [2019-10-13 19:20:11,606 INFO L94 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 [2019-10-13 19:20:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:12,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:20:12,140 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:12,141 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 14 [2019-10-13 19:20:12,141 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032275879] [2019-10-13 19:20:12,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:12,142 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:12,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:12,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:20:12,142 INFO L87 Difference]: Start difference. First operand 762 states and 1205 transitions. Second operand 7 states. [2019-10-13 19:20:12,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:12,305 INFO L93 Difference]: Finished difference Result 1495 states and 2376 transitions. [2019-10-13 19:20:12,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:12,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-10-13 19:20:12,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:12,318 INFO L225 Difference]: With dead ends: 1495 [2019-10-13 19:20:12,318 INFO L226 Difference]: Without dead ends: 774 [2019-10-13 19:20:12,323 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:20:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2019-10-13 19:20:12,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 762. [2019-10-13 19:20:12,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2019-10-13 19:20:12,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1205 transitions. [2019-10-13 19:20:12,365 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1205 transitions. Word has length 118 [2019-10-13 19:20:12,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:12,365 INFO L462 AbstractCegarLoop]: Abstraction has 762 states and 1205 transitions. [2019-10-13 19:20:12,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:12,366 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1205 transitions. [2019-10-13 19:20:12,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 19:20:12,369 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:12,370 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:12,579 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:12,579 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:12,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:12,580 INFO L82 PathProgramCache]: Analyzing trace with hash -64052637, now seen corresponding path program 1 times [2019-10-13 19:20:12,580 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:12,580 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458695976] [2019-10-13 19:20:12,580 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:12,581 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:12,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,436 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,608 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:20:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:13,765 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458695976] [2019-10-13 19:20:13,765 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647262116] [2019-10-13 19:20:13,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:14,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:20:14,316 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:14,316 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:20:14,316 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592323669] [2019-10-13 19:20:14,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:14,322 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:14,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:14,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:14,323 INFO L87 Difference]: Start difference. First operand 762 states and 1205 transitions. Second operand 4 states. [2019-10-13 19:20:14,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:14,420 INFO L93 Difference]: Finished difference Result 1471 states and 2343 transitions. [2019-10-13 19:20:14,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:14,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-13 19:20:14,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:14,427 INFO L225 Difference]: With dead ends: 1471 [2019-10-13 19:20:14,427 INFO L226 Difference]: Without dead ends: 762 [2019-10-13 19:20:14,432 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:14,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2019-10-13 19:20:14,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2019-10-13 19:20:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2019-10-13 19:20:14,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1200 transitions. [2019-10-13 19:20:14,463 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1200 transitions. Word has length 121 [2019-10-13 19:20:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:14,464 INFO L462 AbstractCegarLoop]: Abstraction has 762 states and 1200 transitions. [2019-10-13 19:20:14,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1200 transitions. [2019-10-13 19:20:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 19:20:14,466 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:14,467 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:14,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:14,683 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:14,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:14,684 INFO L82 PathProgramCache]: Analyzing trace with hash 78569715, now seen corresponding path program 1 times [2019-10-13 19:20:14,684 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:14,684 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79025713] [2019-10-13 19:20:14,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:14,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:14,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,519 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:15,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79025713] [2019-10-13 19:20:15,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169477941] [2019-10-13 19:20:15,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:16,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 2892 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:16,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:20:16,373 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:16,373 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:20:16,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196395591] [2019-10-13 19:20:16,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:16,374 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:16,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:16,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:16,375 INFO L87 Difference]: Start difference. First operand 762 states and 1200 transitions. Second operand 4 states. [2019-10-13 19:20:16,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:16,616 INFO L93 Difference]: Finished difference Result 1467 states and 2334 transitions. [2019-10-13 19:20:16,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:16,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-13 19:20:16,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:16,623 INFO L225 Difference]: With dead ends: 1467 [2019-10-13 19:20:16,623 INFO L226 Difference]: Without dead ends: 804 [2019-10-13 19:20:16,627 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2019-10-13 19:20:16,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 801. [2019-10-13 19:20:16,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2019-10-13 19:20:16,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1273 transitions. [2019-10-13 19:20:16,655 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1273 transitions. Word has length 122 [2019-10-13 19:20:16,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:16,656 INFO L462 AbstractCegarLoop]: Abstraction has 801 states and 1273 transitions. [2019-10-13 19:20:16,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:16,656 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1273 transitions. [2019-10-13 19:20:16,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 19:20:16,658 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:16,659 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:16,865 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:16,866 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:16,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:16,866 INFO L82 PathProgramCache]: Analyzing trace with hash -81320279, now seen corresponding path program 1 times [2019-10-13 19:20:16,867 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:16,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735610710] [2019-10-13 19:20:16,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:16,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:16,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,966 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,143 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:20:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,290 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:18,290 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735610710] [2019-10-13 19:20:18,291 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744585136] [2019-10-13 19:20:18,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:18,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:18,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:20:18,947 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:18,947 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-13 19:20:18,947 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734517752] [2019-10-13 19:20:18,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:18,948 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:18,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:18,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:18,949 INFO L87 Difference]: Start difference. First operand 801 states and 1273 transitions. Second operand 7 states. [2019-10-13 19:20:19,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:19,062 INFO L93 Difference]: Finished difference Result 1481 states and 2350 transitions. [2019-10-13 19:20:19,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:19,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2019-10-13 19:20:19,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:19,069 INFO L225 Difference]: With dead ends: 1481 [2019-10-13 19:20:19,069 INFO L226 Difference]: Without dead ends: 818 [2019-10-13 19:20:19,073 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:20:19,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2019-10-13 19:20:19,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 808. [2019-10-13 19:20:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-10-13 19:20:19,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1282 transitions. [2019-10-13 19:20:19,100 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1282 transitions. Word has length 123 [2019-10-13 19:20:19,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:19,100 INFO L462 AbstractCegarLoop]: Abstraction has 808 states and 1282 transitions. [2019-10-13 19:20:19,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:19,100 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1282 transitions. [2019-10-13 19:20:19,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 19:20:19,103 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:19,103 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:19,309 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:19,310 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:19,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:19,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1402466365, now seen corresponding path program 1 times [2019-10-13 19:20:19,310 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:19,310 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291562941] [2019-10-13 19:20:19,310 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:19,311 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:19,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,339 WARN L191 SmtUtils]: Spent 934.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:20,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291562941] [2019-10-13 19:20:20,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83621884] [2019-10-13 19:20:20,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:21,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:21,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:20:21,233 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:21,233 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:20:21,234 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998969219] [2019-10-13 19:20:21,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:21,234 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:21,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:21,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:21,235 INFO L87 Difference]: Start difference. First operand 808 states and 1282 transitions. Second operand 4 states. [2019-10-13 19:20:21,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:21,310 INFO L93 Difference]: Finished difference Result 1523 states and 2426 transitions. [2019-10-13 19:20:21,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:20:21,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-13 19:20:21,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:21,316 INFO L225 Difference]: With dead ends: 1523 [2019-10-13 19:20:21,316 INFO L226 Difference]: Without dead ends: 808 [2019-10-13 19:20:21,320 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2019-10-13 19:20:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2019-10-13 19:20:21,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-10-13 19:20:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1279 transitions. [2019-10-13 19:20:21,347 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1279 transitions. Word has length 124 [2019-10-13 19:20:21,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:21,348 INFO L462 AbstractCegarLoop]: Abstraction has 808 states and 1279 transitions. [2019-10-13 19:20:21,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:21,348 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1279 transitions. [2019-10-13 19:20:21,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 19:20:21,350 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:21,351 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:21,558 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:21,558 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:21,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:21,559 INFO L82 PathProgramCache]: Analyzing trace with hash 875190530, now seen corresponding path program 1 times [2019-10-13 19:20:21,559 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:21,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200049291] [2019-10-13 19:20:21,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:21,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:21,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,538 WARN L191 SmtUtils]: Spent 887.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:22,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200049291] [2019-10-13 19:20:22,809 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876766550] [2019-10-13 19:20:22,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:23,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 2895 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 19:20:23,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 19:20:23,422 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:23,422 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-10-13 19:20:23,422 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108794723] [2019-10-13 19:20:23,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:20:23,423 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:23,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:20:23,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:20:23,424 INFO L87 Difference]: Start difference. First operand 808 states and 1279 transitions. Second operand 3 states. [2019-10-13 19:20:23,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:23,582 INFO L93 Difference]: Finished difference Result 2108 states and 3370 transitions. [2019-10-13 19:20:23,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:20:23,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-10-13 19:20:23,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:23,594 INFO L225 Difference]: With dead ends: 2108 [2019-10-13 19:20:23,595 INFO L226 Difference]: Without dead ends: 1449 [2019-10-13 19:20:23,599 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:20:23,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2019-10-13 19:20:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1376. [2019-10-13 19:20:23,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2019-10-13 19:20:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 2200 transitions. [2019-10-13 19:20:23,720 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 2200 transitions. Word has length 126 [2019-10-13 19:20:23,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:23,720 INFO L462 AbstractCegarLoop]: Abstraction has 1376 states and 2200 transitions. [2019-10-13 19:20:23,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:20:23,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 2200 transitions. [2019-10-13 19:20:23,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-13 19:20:23,727 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:23,728 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:23,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:23,935 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:23,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:23,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1193387823, now seen corresponding path program 1 times [2019-10-13 19:20:23,936 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:23,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165949815] [2019-10-13 19:20:23,936 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:23,936 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:23,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,749 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,150 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-10-13 19:20:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:25,269 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165949815] [2019-10-13 19:20:25,269 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942609890] [2019-10-13 19:20:25,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:25,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-13 19:20:25,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 19:20:25,921 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:25,921 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2019-10-13 19:20:25,921 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227089987] [2019-10-13 19:20:25,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:20:25,922 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:25,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:20:25,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:20:25,922 INFO L87 Difference]: Start difference. First operand 1376 states and 2200 transitions. Second operand 6 states. [2019-10-13 19:20:26,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:26,749 INFO L93 Difference]: Finished difference Result 3426 states and 5469 transitions. [2019-10-13 19:20:26,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:26,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 184 [2019-10-13 19:20:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:26,763 INFO L225 Difference]: With dead ends: 3426 [2019-10-13 19:20:26,763 INFO L226 Difference]: Without dead ends: 2199 [2019-10-13 19:20:26,769 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:20:26,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2019-10-13 19:20:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2195. [2019-10-13 19:20:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2195 states. [2019-10-13 19:20:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3480 transitions. [2019-10-13 19:20:26,855 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3480 transitions. Word has length 184 [2019-10-13 19:20:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:26,855 INFO L462 AbstractCegarLoop]: Abstraction has 2195 states and 3480 transitions. [2019-10-13 19:20:26,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:20:26,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3480 transitions. [2019-10-13 19:20:26,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-13 19:20:26,863 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:26,863 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:27,070 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:27,071 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:27,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:27,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1637447604, now seen corresponding path program 1 times [2019-10-13 19:20:27,071 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:27,071 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515978414] [2019-10-13 19:20:27,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:27,072 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:27,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:27,928 WARN L191 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 388