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_spec1_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:20:58,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:20:58,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:20:58,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:20:58,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:20:58,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:20:58,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:20:58,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:20:58,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:20:58,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:20:58,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:20:58,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:20:58,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:20:58,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:20:58,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:20:58,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:20:58,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:20:58,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:20:58,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:20:58,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:20:58,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:20:58,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:20:58,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:20:58,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:20:58,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:20:58,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:20:58,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:20:58,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:20:58,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:20:58,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:20:58,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:20:58,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:20:58,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:20:58,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:20:58,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:20:58,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:20:58,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:20:58,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:20:58,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:20:58,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:20:58,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:20:58,370 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 19:20:58,383 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:20:58,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:20:58,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:20:58,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:20:58,385 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:20:58,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:20:58,386 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:20:58,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:20:58,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:20:58,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:20:58,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:20:58,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:20:58,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:20:58,387 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:20:58,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:20:58,387 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:20:58,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:20:58,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:20:58,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:20:58,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:20:58,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:20:58,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:20:58,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:20:58,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:20:58,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:20:58,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:20:58,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:20:58,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:20:58,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:20:58,674 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:20:58,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:20:58,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:20:58,696 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:20:58,697 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:20:58,698 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product22.cil.c [2019-10-13 19:20:58,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f325caa/ad64b8498e304ff398a62d819e27f58c/FLAGe123052d2 [2019-10-13 19:20:59,413 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:20:59,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product22.cil.c [2019-10-13 19:20:59,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f325caa/ad64b8498e304ff398a62d819e27f58c/FLAGe123052d2 [2019-10-13 19:20:59,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f325caa/ad64b8498e304ff398a62d819e27f58c [2019-10-13 19:20:59,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:20:59,641 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:20:59,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:20:59,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:20:59,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:20:59,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:59" (1/1) ... [2019-10-13 19:20:59,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35da1448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:59, skipping insertion in model container [2019-10-13 19:20:59,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:59" (1/1) ... [2019-10-13 19:20:59,657 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:20:59,768 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:21:00,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:21:00,533 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:21:00,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:21:00,799 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:21:00,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00 WrapperNode [2019-10-13 19:21:00,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:21:00,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:21:00,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:21:00,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:21:00,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2019-10-13 19:21:00,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2019-10-13 19:21:00,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2019-10-13 19:21:00,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2019-10-13 19:21:00,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2019-10-13 19:21:00,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2019-10-13 19:21:00,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (1/1) ... [2019-10-13 19:21:00,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:21:00,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:21:00,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:21:00,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:21:00,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (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 19:21:01,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:21:01,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:21:01,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:21:01,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:21:01,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:21:01,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:21:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:21:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:21:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:21:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:21:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:21:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:21:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:21:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:21:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:21:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:21:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:21:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:21:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:21:01,075 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:21:01,075 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:21:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:21:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:21:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:21:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:21:01,078 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:21:01,078 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:21:01,078 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:21:01,078 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:21:01,078 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:21:01,078 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:21:01,079 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:21:01,079 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:21:01,079 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:21:01,079 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:21:01,079 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:21:01,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:21:01,080 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:21:01,080 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:21:01,080 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:21:01,080 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:21:01,081 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:21:01,081 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:21:01,081 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:21:01,082 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:21:01,082 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:21:01,082 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:21:01,082 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:21:01,082 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:21:01,082 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:21:01,083 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:21:01,083 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:21:01,083 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:21:01,083 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:21:01,083 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:21:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:21:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:21:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:21:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:21:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:21:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:21:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 19:21:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:21:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:21:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:21:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 19:21:01,086 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:21:01,086 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:21:01,086 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:21:01,087 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-13 19:21:01,087 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:21:01,087 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-13 19:21:01,087 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:21:01,087 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:21:01,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:21:01,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:21:01,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:21:01,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:21:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:21:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:21:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:21:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:21:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:21:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:21:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:21:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:21:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:21:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:21:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:21:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:21:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:21:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:21:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:21:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:21:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:21:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:21:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:21:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:21:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:21:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:21:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:21:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:21:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:21:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:21:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:21:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:21:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:21:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:21:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:21:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:21:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:21:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:21:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:21:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:21:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:21:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:21:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:21:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:21:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:21:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:21:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:21:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:21:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:21:01,101 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:21:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:21:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:21:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:21:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:21:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:21:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:21:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:21:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:21:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:21:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:21:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:21:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:21:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:21:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:21:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:21:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:21:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:21:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:21:01,110 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:21:01,111 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:21:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:21:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:21:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:21:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:21:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:21:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:21:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:21:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:21:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:21:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:21:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:21:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:21:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:21:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 19:21:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:21:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:21:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 19:21:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:21:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:21:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:21:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-13 19:21:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:21:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-13 19:21:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:21:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:21:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:21:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:21:03,759 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:21:03,760 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:21:03,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:03 BoogieIcfgContainer [2019-10-13 19:21:03,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:21:03,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:21:03,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:21:03,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:21:03,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:20:59" (1/3) ... [2019-10-13 19:21:03,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7acc4f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:03, skipping insertion in model container [2019-10-13 19:21:03,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:00" (2/3) ... [2019-10-13 19:21:03,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7acc4f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:03, skipping insertion in model container [2019-10-13 19:21:03,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:03" (3/3) ... [2019-10-13 19:21:03,773 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product22.cil.c [2019-10-13 19:21:03,783 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:21:03,797 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:21:03,808 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:21:03,853 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:21:03,854 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:21:03,854 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:21:03,854 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:21:03,854 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:21:03,854 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:21:03,854 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:21:03,854 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:21:03,897 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states. [2019-10-13 19:21:03,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 19:21:03,916 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:03,917 INFO L380 BasicCegarLoop]: trace histogram [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 19:21:03,919 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:03,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:03,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1159872126, now seen corresponding path program 1 times [2019-10-13 19:21:03,932 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:03,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770444365] [2019-10-13 19:21:03,933 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:03,933 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:03,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,639 WARN L191 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,001 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,313 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:06,751 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770444365] [2019-10-13 19:21:06,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703970131] [2019-10-13 19:21:06,752 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 19:21:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:21:07,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:21:07,371 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:07,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-10-13 19:21:07,372 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874462525] [2019-10-13 19:21:07,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:21:07,378 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:07,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:21:07,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:21:07,396 INFO L87 Difference]: Start difference. First operand 790 states. Second operand 2 states. [2019-10-13 19:21:07,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:07,484 INFO L93 Difference]: Finished difference Result 666 states and 1058 transitions. [2019-10-13 19:21:07,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:21:07,486 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 116 [2019-10-13 19:21:07,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:07,514 INFO L225 Difference]: With dead ends: 666 [2019-10-13 19:21:07,514 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 19:21:07,520 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:21:07,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 19:21:07,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 19:21:07,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 19:21:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1003 transitions. [2019-10-13 19:21:07,638 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1003 transitions. Word has length 116 [2019-10-13 19:21:07,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:07,641 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1003 transitions. [2019-10-13 19:21:07,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:21:07,641 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1003 transitions. [2019-10-13 19:21:07,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 19:21:07,650 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:07,650 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:21:07,859 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:07,860 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:07,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:07,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1060701681, now seen corresponding path program 1 times [2019-10-13 19:21:07,861 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:07,862 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276574247] [2019-10-13 19:21:07,863 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:07,863 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:07,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,069 WARN L191 SmtUtils]: Spent 954.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,347 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,523 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:09,866 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276574247] [2019-10-13 19:21:09,867 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028457495] [2019-10-13 19:21:09,867 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 19:21:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 3173 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:10,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:10,550 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:10,551 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:10,551 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485457803] [2019-10-13 19:21:10,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:10,553 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:10,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:10,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:10,554 INFO L87 Difference]: Start difference. First operand 629 states and 1003 transitions. Second operand 4 states. [2019-10-13 19:21:10,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:10,686 INFO L93 Difference]: Finished difference Result 1230 states and 1979 transitions. [2019-10-13 19:21:10,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:10,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 19:21:10,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:10,694 INFO L225 Difference]: With dead ends: 1230 [2019-10-13 19:21:10,694 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 19:21:10,702 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:10,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 19:21:10,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 19:21:10,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 19:21:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1002 transitions. [2019-10-13 19:21:10,757 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1002 transitions. Word has length 118 [2019-10-13 19:21:10,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:10,758 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1002 transitions. [2019-10-13 19:21:10,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:10,758 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1002 transitions. [2019-10-13 19:21:10,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 19:21:10,764 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:10,764 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, 1, 1] [2019-10-13 19:21:10,971 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:10,972 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:10,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:10,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1607555785, now seen corresponding path program 1 times [2019-10-13 19:21:10,974 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:10,974 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559620406] [2019-10-13 19:21:10,975 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:10,975 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:10,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,949 WARN L191 SmtUtils]: Spent 857.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,264 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,417 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:12,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559620406] [2019-10-13 19:21:12,739 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088543756] [2019-10-13 19:21:12,740 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 19:21:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 3175 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:13,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:13,427 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:13,428 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:13,428 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:13,428 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249125786] [2019-10-13 19:21:13,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:13,429 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:13,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:13,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:13,430 INFO L87 Difference]: Start difference. First operand 629 states and 1002 transitions. Second operand 4 states. [2019-10-13 19:21:13,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:13,512 INFO L93 Difference]: Finished difference Result 1230 states and 1977 transitions. [2019-10-13 19:21:13,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:13,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-13 19:21:13,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:13,518 INFO L225 Difference]: With dead ends: 1230 [2019-10-13 19:21:13,518 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 19:21:13,522 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:13,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 19:21:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 19:21:13,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 19:21:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1001 transitions. [2019-10-13 19:21:13,552 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1001 transitions. Word has length 120 [2019-10-13 19:21:13,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:13,552 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1001 transitions. [2019-10-13 19:21:13,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:13,553 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1001 transitions. [2019-10-13 19:21:13,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 19:21:13,556 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:13,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:13,765 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:13,774 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:13,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:13,774 INFO L82 PathProgramCache]: Analyzing trace with hash -104433287, now seen corresponding path program 1 times [2019-10-13 19:21:13,774 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:13,775 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119730248] [2019-10-13 19:21:13,775 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:13,775 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:13,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,709 WARN L191 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,956 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,117 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,465 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:15,466 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119730248] [2019-10-13 19:21:15,466 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527684207] [2019-10-13 19:21:15,467 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 19:21:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 3177 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:16,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:16,090 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:16,090 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:16,090 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405151689] [2019-10-13 19:21:16,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:16,091 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:16,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:16,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:16,093 INFO L87 Difference]: Start difference. First operand 629 states and 1001 transitions. Second operand 4 states. [2019-10-13 19:21:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:16,202 INFO L93 Difference]: Finished difference Result 1237 states and 1984 transitions. [2019-10-13 19:21:16,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:16,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-13 19:21:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:16,245 INFO L225 Difference]: With dead ends: 1237 [2019-10-13 19:21:16,245 INFO L226 Difference]: Without dead ends: 638 [2019-10-13 19:21:16,251 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:16,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2019-10-13 19:21:16,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2019-10-13 19:21:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2019-10-13 19:21:16,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1013 transitions. [2019-10-13 19:21:16,293 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1013 transitions. Word has length 122 [2019-10-13 19:21:16,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:16,294 INFO L462 AbstractCegarLoop]: Abstraction has 638 states and 1013 transitions. [2019-10-13 19:21:16,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:16,294 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1013 transitions. [2019-10-13 19:21:16,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 19:21:16,298 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:16,298 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, 1, 1, 1, 1, 1] [2019-10-13 19:21:16,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:16,514 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:16,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:16,514 INFO L82 PathProgramCache]: Analyzing trace with hash -730714916, now seen corresponding path program 1 times [2019-10-13 19:21:16,514 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:16,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216481478] [2019-10-13 19:21:16,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:16,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:16,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,467 WARN L191 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,712 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,872 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:18,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216481478] [2019-10-13 19:21:18,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467779987] [2019-10-13 19:21:18,176 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 19:21:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 3178 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:18,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:18,774 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:18,774 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:18,774 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950645858] [2019-10-13 19:21:18,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:18,775 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:18,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:18,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:18,776 INFO L87 Difference]: Start difference. First operand 638 states and 1013 transitions. Second operand 4 states. [2019-10-13 19:21:18,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:18,868 INFO L93 Difference]: Finished difference Result 1239 states and 1985 transitions. [2019-10-13 19:21:18,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:18,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-13 19:21:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:18,875 INFO L225 Difference]: With dead ends: 1239 [2019-10-13 19:21:18,876 INFO L226 Difference]: Without dead ends: 638 [2019-10-13 19:21:18,881 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:18,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2019-10-13 19:21:18,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2019-10-13 19:21:18,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2019-10-13 19:21:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1012 transitions. [2019-10-13 19:21:18,910 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1012 transitions. Word has length 123 [2019-10-13 19:21:18,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:18,910 INFO L462 AbstractCegarLoop]: Abstraction has 638 states and 1012 transitions. [2019-10-13 19:21:18,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:18,911 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1012 transitions. [2019-10-13 19:21:18,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 19:21:18,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:18,914 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, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:19,118 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:19,119 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:19,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:19,119 INFO L82 PathProgramCache]: Analyzing trace with hash -212076067, now seen corresponding path program 1 times [2019-10-13 19:21:19,120 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:19,120 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291499846] [2019-10-13 19:21:19,120 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:19,120 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:19,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,080 WARN L191 SmtUtils]: Spent 879.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,484 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,701 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:20,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291499846] [2019-10-13 19:21:20,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168189000] [2019-10-13 19:21:20,990 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 19:21:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:21,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:21,555 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:21,555 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:21,555 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086996737] [2019-10-13 19:21:21,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:21,556 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:21,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:21,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:21,556 INFO L87 Difference]: Start difference. First operand 638 states and 1012 transitions. Second operand 4 states. [2019-10-13 19:21:21,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:21,639 INFO L93 Difference]: Finished difference Result 1239 states and 1984 transitions. [2019-10-13 19:21:21,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:21,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-13 19:21:21,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:21,647 INFO L225 Difference]: With dead ends: 1239 [2019-10-13 19:21:21,647 INFO L226 Difference]: Without dead ends: 638 [2019-10-13 19:21:21,653 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:21,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2019-10-13 19:21:21,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2019-10-13 19:21:21,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2019-10-13 19:21:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1011 transitions. [2019-10-13 19:21:21,682 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1011 transitions. Word has length 124 [2019-10-13 19:21:21,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:21,685 INFO L462 AbstractCegarLoop]: Abstraction has 638 states and 1011 transitions. [2019-10-13 19:21:21,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:21,685 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1011 transitions. [2019-10-13 19:21:21,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 19:21:21,688 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:21,688 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:21,905 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:21,905 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:21,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:21,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1439359232, now seen corresponding path program 1 times [2019-10-13 19:21:21,907 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:21,908 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891725557] [2019-10-13 19:21:21,909 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:21,909 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:21,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,942 WARN L191 SmtUtils]: Spent 877.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,243 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,418 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:21:23,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891725557] [2019-10-13 19:21:23,847 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989975677] [2019-10-13 19:21:23,847 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 19:21:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:21:24,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:21:24,765 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:24,765 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2019-10-13 19:21:24,765 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306838278] [2019-10-13 19:21:24,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:21:24,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:24,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:21:24,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:21:24,767 INFO L87 Difference]: Start difference. First operand 638 states and 1011 transitions. Second operand 7 states. [2019-10-13 19:21:24,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:24,926 INFO L93 Difference]: Finished difference Result 1246 states and 1993 transitions. [2019-10-13 19:21:24,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:21:24,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2019-10-13 19:21:24,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:24,932 INFO L225 Difference]: With dead ends: 1246 [2019-10-13 19:21:24,932 INFO L226 Difference]: Without dead ends: 649 [2019-10-13 19:21:24,936 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:21:24,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2019-10-13 19:21:24,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 645. [2019-10-13 19:21:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-10-13 19:21:24,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1021 transitions. [2019-10-13 19:21:24,965 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1021 transitions. Word has length 125 [2019-10-13 19:21:24,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:24,966 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 1021 transitions. [2019-10-13 19:21:24,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:21:24,966 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1021 transitions. [2019-10-13 19:21:24,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 19:21:24,969 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:24,969 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:21:25,178 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:25,178 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:25,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:25,179 INFO L82 PathProgramCache]: Analyzing trace with hash 438750369, now seen corresponding path program 1 times [2019-10-13 19:21:25,179 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:25,180 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150184238] [2019-10-13 19:21:25,180 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:25,180 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:25,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,536 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,788 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,941 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 19:21:27,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150184238] [2019-10-13 19:21:27,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649553857] [2019-10-13 19:21:27,462 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 19:21:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:21:27,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:21:28,148 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:28,148 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2019-10-13 19:21:28,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119506984] [2019-10-13 19:21:28,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:21:28,149 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:28,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:21:28,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:21:28,150 INFO L87 Difference]: Start difference. First operand 645 states and 1021 transitions. Second operand 7 states. [2019-10-13 19:21:28,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:28,301 INFO L93 Difference]: Finished difference Result 1252 states and 2002 transitions. [2019-10-13 19:21:28,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:21:28,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2019-10-13 19:21:28,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:28,308 INFO L225 Difference]: With dead ends: 1252 [2019-10-13 19:21:28,308 INFO L226 Difference]: Without dead ends: 652 [2019-10-13 19:21:28,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2019-10-13 19:21:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2019-10-13 19:21:28,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 648. [2019-10-13 19:21:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-10-13 19:21:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1026 transitions. [2019-10-13 19:21:28,340 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1026 transitions. Word has length 126 [2019-10-13 19:21:28,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:28,342 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 1026 transitions. [2019-10-13 19:21:28,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:21:28,343 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1026 transitions. [2019-10-13 19:21:28,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 19:21:28,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:28,345 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:21:28,558 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:28,559 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:28,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:28,559 INFO L82 PathProgramCache]: Analyzing trace with hash -499781246, now seen corresponding path program 1 times [2019-10-13 19:21:28,559 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:28,560 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278449911] [2019-10-13 19:21:28,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:28,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:28,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,522 WARN L191 SmtUtils]: Spent 874.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,775 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,948 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:21:30,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278449911] [2019-10-13 19:21:30,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358661082] [2019-10-13 19:21:30,202 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 19:21:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:30,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:21:30,807 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:30,807 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-10-13 19:21:30,807 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070821064] [2019-10-13 19:21:30,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:30,808 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:30,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:30,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:21:30,808 INFO L87 Difference]: Start difference. First operand 648 states and 1026 transitions. Second operand 4 states. [2019-10-13 19:21:31,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:31,037 INFO L93 Difference]: Finished difference Result 1257 states and 2012 transitions. [2019-10-13 19:21:31,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:31,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-13 19:21:31,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:31,043 INFO L225 Difference]: With dead ends: 1257 [2019-10-13 19:21:31,043 INFO L226 Difference]: Without dead ends: 648 [2019-10-13 19:21:31,047 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:21:31,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2019-10-13 19:21:31,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2019-10-13 19:21:31,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-10-13 19:21:31,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1021 transitions. [2019-10-13 19:21:31,081 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1021 transitions. Word has length 126 [2019-10-13 19:21:31,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:31,082 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 1021 transitions. [2019-10-13 19:21:31,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:31,082 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1021 transitions. [2019-10-13 19:21:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 19:21:31,086 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:31,087 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:21:31,294 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:31,295 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:31,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:31,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1419215856, now seen corresponding path program 1 times [2019-10-13 19:21:31,296 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:31,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795378654] [2019-10-13 19:21:31,297 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:31,297 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:31,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,427 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:32,708 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat