java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:18:49,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:18:50,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:18:50,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:18:50,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:18:50,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:18:50,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:18:50,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:18:50,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:18:50,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:18:50,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:18:50,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:18:50,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:18:50,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:18:50,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:18:50,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:18:50,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:18:50,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:18:50,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:18:50,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:18:50,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:18:50,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:18:50,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:18:50,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:18:50,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:18:50,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:18:50,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:18:50,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:18:50,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:18:50,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:18:50,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:18:50,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:18:50,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:18:50,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:18:50,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:18:50,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:18:50,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:18:50,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:18:50,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:18:50,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:18:50,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:18:50,051 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 [2019-10-14 23:18:50,066 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:18:50,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:18:50,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:18:50,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:18:50,068 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:18:50,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:18:50,068 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:18:50,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:18:50,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:18:50,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:18:50,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:18:50,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:18:50,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:18:50,070 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:18:50,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:18:50,070 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:18:50,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:18:50,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:18:50,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:18:50,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:18:50,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:18:50,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:18:50,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:18:50,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:18:50,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:18:50,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:18:50,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:18:50,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:18:50,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:18:50,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:18:50,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:18:50,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:18:50,427 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:18:50,428 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:18:50,428 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c [2019-10-14 23:18:50,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89b71673c/f6e30d35837c44faa9df400334474b09/FLAG9a016019b [2019-10-14 23:18:51,215 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:18:51,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c [2019-10-14 23:18:51,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89b71673c/f6e30d35837c44faa9df400334474b09/FLAG9a016019b [2019-10-14 23:18:51,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89b71673c/f6e30d35837c44faa9df400334474b09 [2019-10-14 23:18:51,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:18:51,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:18:51,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:18:51,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:18:51,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:18:51,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:51" (1/1) ... [2019-10-14 23:18:51,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a3dae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:51, skipping insertion in model container [2019-10-14 23:18:51,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:51" (1/1) ... [2019-10-14 23:18:51,474 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:18:51,570 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:18:52,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:18:52,395 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:18:52,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:18:52,617 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:18:52,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:52 WrapperNode [2019-10-14 23:18:52,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:18:52,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:18:52,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:18:52,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:18:52,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:52" (1/1) ... [2019-10-14 23:18:52,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:52" (1/1) ... [2019-10-14 23:18:52,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:52" (1/1) ... [2019-10-14 23:18:52,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:52" (1/1) ... [2019-10-14 23:18:52,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:52" (1/1) ... [2019-10-14 23:18:52,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:52" (1/1) ... [2019-10-14 23:18:52,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:52" (1/1) ... [2019-10-14 23:18:52,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:18:52,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:18:52,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:18:52,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:18:52,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:52" (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 [2019-10-14 23:18:52,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:18:52,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:18:52,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:18:52,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:18:52,910 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-14 23:18:52,911 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-14 23:18:52,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-14 23:18:52,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-14 23:18:52,912 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-14 23:18:52,912 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-14 23:18:52,913 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-14 23:18:52,913 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-14 23:18:52,914 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-14 23:18:52,914 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-14 23:18:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-14 23:18:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-14 23:18:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:18:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-14 23:18:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-14 23:18:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-14 23:18:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:18:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-14 23:18:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:18:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:18:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:18:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-14 23:18:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-14 23:18:52,921 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-14 23:18:52,921 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-14 23:18:52,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-14 23:18:52,922 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-14 23:18:52,922 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-14 23:18:52,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-14 23:18:52,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-14 23:18:52,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-14 23:18:52,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-14 23:18:52,923 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:18:52,923 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:18:52,923 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:18:52,923 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:18:52,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:18:52,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:18:52,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:18:52,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:18:52,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:18:52,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:18:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-14 23:18:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-14 23:18:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-14 23:18:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-14 23:18:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-14 23:18:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-14 23:18:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-14 23:18:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-14 23:18:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-14 23:18:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-14 23:18:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-14 23:18:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-14 23:18:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-14 23:18:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-14 23:18:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-14 23:18:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-14 23:18:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-14 23:18:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-14 23:18:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-14 23:18:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-14 23:18:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-14 23:18:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-14 23:18:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-14 23:18:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-14 23:18:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-14 23:18:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-14 23:18:52,931 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-14 23:18:52,931 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-14 23:18:52,932 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:18:52,932 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-14 23:18:52,932 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-14 23:18:52,932 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-14 23:18:52,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-14 23:18:52,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-14 23:18:52,933 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:18:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:18:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:18:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:18:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-14 23:18:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-14 23:18:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:18:52,935 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-14 23:18:52,935 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-14 23:18:52,936 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-14 23:18:52,936 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-14 23:18:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-14 23:18:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-14 23:18:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-14 23:18:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-14 23:18:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-14 23:18:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-14 23:18:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:18:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-14 23:18:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-14 23:18:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-14 23:18:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-14 23:18:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-14 23:18:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-14 23:18:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-14 23:18:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-14 23:18:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-14 23:18:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:18:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-14 23:18:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-14 23:18:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-14 23:18:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:18:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-14 23:18:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:18:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:18:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:18:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:18:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:18:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:18:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:18:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-14 23:18:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-14 23:18:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-14 23:18:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-14 23:18:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-14 23:18:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-14 23:18:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-14 23:18:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-14 23:18:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-14 23:18:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:18:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:18:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:18:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:18:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:18:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:18:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:18:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:18:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:18:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:18:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:18:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:18:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:18:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:18:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:18:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:18:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:18:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:18:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:18:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-14 23:18:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-14 23:18:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-14 23:18:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-14 23:18:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-14 23:18:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-14 23:18:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-14 23:18:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-14 23:18:52,961 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-14 23:18:52,961 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-14 23:18:52,961 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-14 23:18:52,961 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-14 23:18:52,962 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-14 23:18:52,962 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-14 23:18:52,962 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-14 23:18:52,962 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-14 23:18:52,962 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-14 23:18:52,963 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-14 23:18:52,963 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-14 23:18:52,963 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-14 23:18:52,963 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-14 23:18:52,963 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-14 23:18:52,963 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-14 23:18:52,963 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-14 23:18:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-14 23:18:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-14 23:18:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:18:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:18:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:18:55,533 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:18:55,534 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-14 23:18:55,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:55 BoogieIcfgContainer [2019-10-14 23:18:55,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:18:55,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:18:55,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:18:55,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:18:55,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:18:51" (1/3) ... [2019-10-14 23:18:55,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4f892c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:55, skipping insertion in model container [2019-10-14 23:18:55,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:52" (2/3) ... [2019-10-14 23:18:55,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4f892c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:55, skipping insertion in model container [2019-10-14 23:18:55,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:55" (3/3) ... [2019-10-14 23:18:55,544 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product32.cil.c [2019-10-14 23:18:55,555 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:18:55,565 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:18:55,576 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:18:55,611 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:18:55,611 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:18:55,611 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:18:55,611 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:18:55,611 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:18:55,612 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:18:55,612 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:18:55,612 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:18:55,648 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states. [2019-10-14 23:18:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-14 23:18:55,665 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:55,666 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:55,668 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:55,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:55,674 INFO L82 PathProgramCache]: Analyzing trace with hash -2027146740, now seen corresponding path program 1 times [2019-10-14 23:18:55,684 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:55,684 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088110947] [2019-10-14 23:18:55,684 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:55,684 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:55,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,293 WARN L191 SmtUtils]: Spent 952.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:18:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,509 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-14 23:18:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:18:57,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088110947] [2019-10-14 23:18:57,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907126073] [2019-10-14 23:18:57,763 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 [2019-10-14 23:18:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:58,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 2890 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-14 23:18:58,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:18:58,326 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:58,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-10-14 23:18:58,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97060523] [2019-10-14 23:18:58,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:18:58,332 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:58,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:18:58,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:58,349 INFO L87 Difference]: Start difference. First operand 851 states. Second operand 2 states. [2019-10-14 23:18:58,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:58,473 INFO L93 Difference]: Finished difference Result 1381 states and 2213 transitions. [2019-10-14 23:18:58,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:18:58,475 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 113 [2019-10-14 23:18:58,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:58,506 INFO L225 Difference]: With dead ends: 1381 [2019-10-14 23:18:58,506 INFO L226 Difference]: Without dead ends: 698 [2019-10-14 23:18:58,518 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:58,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2019-10-14 23:18:58,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2019-10-14 23:18:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2019-10-14 23:18:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1098 transitions. [2019-10-14 23:18:58,623 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1098 transitions. Word has length 113 [2019-10-14 23:18:58,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:58,626 INFO L462 AbstractCegarLoop]: Abstraction has 698 states and 1098 transitions. [2019-10-14 23:18:58,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:18:58,626 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1098 transitions. [2019-10-14 23:18:58,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-14 23:18:58,678 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:58,678 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:58,879 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:58,879 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:58,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:58,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1220182100, now seen corresponding path program 1 times [2019-10-14 23:18:58,881 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:58,881 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940900530] [2019-10-14 23:18:58,882 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:58,883 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:58,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,058 WARN L191 SmtUtils]: Spent 926.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:19:00,399 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940900530] [2019-10-14 23:19:00,399 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177710954] [2019-10-14 23:19:00,399 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 [2019-10-14 23:19:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:01,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:19:01,104 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:01,104 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2019-10-14 23:19:01,104 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419870911] [2019-10-14 23:19:01,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:01,105 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:01,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:01,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:19:01,108 INFO L87 Difference]: Start difference. First operand 698 states and 1098 transitions. Second operand 4 states. [2019-10-14 23:19:01,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:01,272 INFO L93 Difference]: Finished difference Result 1379 states and 2186 transitions. [2019-10-14 23:19:01,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:01,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-10-14 23:19:01,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:01,279 INFO L225 Difference]: With dead ends: 1379 [2019-10-14 23:19:01,279 INFO L226 Difference]: Without dead ends: 707 [2019-10-14 23:19:01,284 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:19:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2019-10-14 23:19:01,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2019-10-14 23:19:01,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-10-14 23:19:01,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1112 transitions. [2019-10-14 23:19:01,322 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1112 transitions. Word has length 113 [2019-10-14 23:19:01,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:01,322 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 1112 transitions. [2019-10-14 23:19:01,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:01,322 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1112 transitions. [2019-10-14 23:19:01,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-14 23:19:01,325 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:01,325 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:01,531 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:01,531 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:01,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:01,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1088965156, now seen corresponding path program 1 times [2019-10-14 23:19:01,533 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:01,533 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674543974] [2019-10-14 23:19:01,533 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:01,533 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:01,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,494 WARN L191 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:19:02,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674543974] [2019-10-14 23:19:02,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417867494] [2019-10-14 23:19:02,805 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 [2019-10-14 23:19:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:03,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:03,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:19:03,326 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:03,327 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:19:03,327 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816223078] [2019-10-14 23:19:03,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:03,328 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:03,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:03,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:03,329 INFO L87 Difference]: Start difference. First operand 707 states and 1112 transitions. Second operand 4 states. [2019-10-14 23:19:03,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:03,665 INFO L93 Difference]: Finished difference Result 1425 states and 2271 transitions. [2019-10-14 23:19:03,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:03,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2019-10-14 23:19:03,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:03,672 INFO L225 Difference]: With dead ends: 1425 [2019-10-14 23:19:03,672 INFO L226 Difference]: Without dead ends: 746 [2019-10-14 23:19:03,676 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2019-10-14 23:19:03,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2019-10-14 23:19:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-10-14 23:19:03,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1186 transitions. [2019-10-14 23:19:03,716 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1186 transitions. Word has length 115 [2019-10-14 23:19:03,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:03,716 INFO L462 AbstractCegarLoop]: Abstraction has 746 states and 1186 transitions. [2019-10-14 23:19:03,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:03,716 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1186 transitions. [2019-10-14 23:19:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-14 23:19:03,724 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:03,725 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:03,940 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:03,940 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:03,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:03,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1537184166, now seen corresponding path program 1 times [2019-10-14 23:19:03,941 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:03,943 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082011395] [2019-10-14 23:19:03,943 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:03,943 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:03,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,850 WARN L191 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,993 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-14 23:19:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,383 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:19:05,383 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082011395] [2019-10-14 23:19:05,384 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150493220] [2019-10-14 23:19:05,384 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 [2019-10-14 23:19:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:05,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:19:05,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:19:06,044 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:06,044 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 13 [2019-10-14 23:19:06,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434647010] [2019-10-14 23:19:06,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:19:06,045 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:06,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:19:06,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:19:06,047 INFO L87 Difference]: Start difference. First operand 746 states and 1186 transitions. Second operand 7 states. [2019-10-14 23:19:06,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:06,225 INFO L93 Difference]: Finished difference Result 1478 states and 2362 transitions. [2019-10-14 23:19:06,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:19:06,226 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2019-10-14 23:19:06,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:06,242 INFO L225 Difference]: With dead ends: 1478 [2019-10-14 23:19:06,242 INFO L226 Difference]: Without dead ends: 760 [2019-10-14 23:19:06,249 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:19:06,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2019-10-14 23:19:06,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 753. [2019-10-14 23:19:06,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-10-14 23:19:06,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1197 transitions. [2019-10-14 23:19:06,293 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1197 transitions. Word has length 117 [2019-10-14 23:19:06,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:06,294 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 1197 transitions. [2019-10-14 23:19:06,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:19:06,294 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1197 transitions. [2019-10-14 23:19:06,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-14 23:19:06,298 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:06,298 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:06,518 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:06,518 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:06,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:06,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1752638134, now seen corresponding path program 1 times [2019-10-14 23:19:06,519 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:06,519 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444280139] [2019-10-14 23:19:06,519 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:06,519 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:06,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,639 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:07,940 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:07,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444280139] [2019-10-14 23:19:07,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843406066] [2019-10-14 23:19:07,941 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 [2019-10-14 23:19:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:08,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:19:08,658 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:08,659 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:19:08,660 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410287228] [2019-10-14 23:19:08,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:08,664 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:08,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:08,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:08,665 INFO L87 Difference]: Start difference. First operand 753 states and 1197 transitions. Second operand 4 states. [2019-10-14 23:19:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:08,801 INFO L93 Difference]: Finished difference Result 1491 states and 2382 transitions. [2019-10-14 23:19:08,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:08,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-14 23:19:08,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:08,814 INFO L225 Difference]: With dead ends: 1491 [2019-10-14 23:19:08,814 INFO L226 Difference]: Without dead ends: 764 [2019-10-14 23:19:08,824 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:08,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2019-10-14 23:19:08,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 762. [2019-10-14 23:19:08,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2019-10-14 23:19:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1205 transitions. [2019-10-14 23:19:08,882 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1205 transitions. Word has length 118 [2019-10-14 23:19:08,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:08,883 INFO L462 AbstractCegarLoop]: Abstraction has 762 states and 1205 transitions. [2019-10-14 23:19:08,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1205 transitions. [2019-10-14 23:19:08,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-14 23:19:08,889 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:08,890 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:09,098 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:09,098 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:09,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:09,099 INFO L82 PathProgramCache]: Analyzing trace with hash 718255648, now seen corresponding path program 1 times [2019-10-14 23:19:09,099 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:09,100 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521679706] [2019-10-14 23:19:09,100 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:09,100 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:09,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,113 WARN L191 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:19:10,482 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521679706] [2019-10-14 23:19:10,482 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57039114] [2019-10-14 23:19:10,482 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 [2019-10-14 23:19:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:19:10,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:19:11,015 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:11,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 14 [2019-10-14 23:19:11,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243483473] [2019-10-14 23:19:11,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:19:11,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:11,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:19:11,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:19:11,017 INFO L87 Difference]: Start difference. First operand 762 states and 1205 transitions. Second operand 7 states. [2019-10-14 23:19:11,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:11,223 INFO L93 Difference]: Finished difference Result 1495 states and 2376 transitions. [2019-10-14 23:19:11,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:19:11,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-10-14 23:19:11,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:11,232 INFO L225 Difference]: With dead ends: 1495 [2019-10-14 23:19:11,232 INFO L226 Difference]: Without dead ends: 774 [2019-10-14 23:19:11,238 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:19:11,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2019-10-14 23:19:11,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 762. [2019-10-14 23:19:11,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2019-10-14 23:19:11,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1205 transitions. [2019-10-14 23:19:11,275 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1205 transitions. Word has length 118 [2019-10-14 23:19:11,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:11,276 INFO L462 AbstractCegarLoop]: Abstraction has 762 states and 1205 transitions. [2019-10-14 23:19:11,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:19:11,276 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1205 transitions. [2019-10-14 23:19:11,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-14 23:19:11,279 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:11,280 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:11,490 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:11,490 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:11,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:11,491 INFO L82 PathProgramCache]: Analyzing trace with hash -64052637, now seen corresponding path program 1 times [2019-10-14 23:19:11,491 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:11,491 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330512265] [2019-10-14 23:19:11,491 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:11,491 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:11,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,371 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,666 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:12,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330512265] [2019-10-14 23:19:12,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371060391] [2019-10-14 23:19:12,667 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 [2019-10-14 23:19:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:13,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:13,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:19:13,235 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:13,235 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:19:13,235 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806721497] [2019-10-14 23:19:13,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:13,236 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:13,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:13,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:13,237 INFO L87 Difference]: Start difference. First operand 762 states and 1205 transitions. Second operand 4 states. [2019-10-14 23:19:13,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:13,349 INFO L93 Difference]: Finished difference Result 1471 states and 2343 transitions. [2019-10-14 23:19:13,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:13,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-14 23:19:13,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:13,401 INFO L225 Difference]: With dead ends: 1471 [2019-10-14 23:19:13,401 INFO L226 Difference]: Without dead ends: 762 [2019-10-14 23:19:13,404 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:13,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2019-10-14 23:19:13,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2019-10-14 23:19:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2019-10-14 23:19:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1200 transitions. [2019-10-14 23:19:13,443 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1200 transitions. Word has length 121 [2019-10-14 23:19:13,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:13,444 INFO L462 AbstractCegarLoop]: Abstraction has 762 states and 1200 transitions. [2019-10-14 23:19:13,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:13,444 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1200 transitions. [2019-10-14 23:19:13,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-14 23:19:13,446 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:13,447 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:13,656 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:13,657 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:13,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:13,657 INFO L82 PathProgramCache]: Analyzing trace with hash 78569715, now seen corresponding path program 1 times [2019-10-14 23:19:13,657 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:13,657 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516168470] [2019-10-14 23:19:13,658 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:13,658 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:13,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,593 WARN L191 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:14,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516168470] [2019-10-14 23:19:14,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172343108] [2019-10-14 23:19:14,882 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 [2019-10-14 23:19:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 2892 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:15,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:15,465 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:19:15,466 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:15,467 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:19:15,467 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370152739] [2019-10-14 23:19:15,470 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:15,471 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:15,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:15,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:15,471 INFO L87 Difference]: Start difference. First operand 762 states and 1200 transitions. Second operand 4 states. [2019-10-14 23:19:15,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:15,734 INFO L93 Difference]: Finished difference Result 1467 states and 2334 transitions. [2019-10-14 23:19:15,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:15,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-14 23:19:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:15,742 INFO L225 Difference]: With dead ends: 1467 [2019-10-14 23:19:15,742 INFO L226 Difference]: Without dead ends: 804 [2019-10-14 23:19:15,746 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:15,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2019-10-14 23:19:15,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 801. [2019-10-14 23:19:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2019-10-14 23:19:15,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1273 transitions. [2019-10-14 23:19:15,786 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1273 transitions. Word has length 122 [2019-10-14 23:19:15,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:15,789 INFO L462 AbstractCegarLoop]: Abstraction has 801 states and 1273 transitions. [2019-10-14 23:19:15,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:15,789 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1273 transitions. [2019-10-14 23:19:15,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-14 23:19:15,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:15,791 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:16,005 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:16,006 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:16,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:16,006 INFO L82 PathProgramCache]: Analyzing trace with hash -81320279, now seen corresponding path program 1 times [2019-10-14 23:19:16,007 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:16,007 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734294692] [2019-10-14 23:19:16,007 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:16,007 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:16,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,067 WARN L191 SmtUtils]: Spent 975.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:17,382 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734294692] [2019-10-14 23:19:17,382 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715158428] [2019-10-14 23:19:17,383 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 [2019-10-14 23:19:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:19:17,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:19:18,023 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:18,024 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-14 23:19:18,024 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336021084] [2019-10-14 23:19:18,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:19:18,025 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:18,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:19:18,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:19:18,025 INFO L87 Difference]: Start difference. First operand 801 states and 1273 transitions. Second operand 7 states. [2019-10-14 23:19:18,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:18,171 INFO L93 Difference]: Finished difference Result 1481 states and 2350 transitions. [2019-10-14 23:19:18,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:19:18,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2019-10-14 23:19:18,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:18,178 INFO L225 Difference]: With dead ends: 1481 [2019-10-14 23:19:18,179 INFO L226 Difference]: Without dead ends: 818 [2019-10-14 23:19:18,183 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:19:18,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2019-10-14 23:19:18,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 808. [2019-10-14 23:19:18,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-10-14 23:19:18,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1282 transitions. [2019-10-14 23:19:18,214 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1282 transitions. Word has length 123 [2019-10-14 23:19:18,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:18,214 INFO L462 AbstractCegarLoop]: Abstraction has 808 states and 1282 transitions. [2019-10-14 23:19:18,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:19:18,214 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1282 transitions. [2019-10-14 23:19:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-14 23:19:18,217 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:18,217 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:18,428 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:18,429 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:18,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:18,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1402466365, now seen corresponding path program 1 times [2019-10-14 23:19:18,430 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:18,430 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084108152] [2019-10-14 23:19:18,431 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:18,431 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:18,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,388 WARN L191 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:19,678 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084108152] [2019-10-14 23:19:19,678 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335066703] [2019-10-14 23:19:19,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:20,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:20,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:19:20,249 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:20,250 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:19:20,250 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863132954] [2019-10-14 23:19:20,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:20,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:20,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:20,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:20,252 INFO L87 Difference]: Start difference. First operand 808 states and 1282 transitions. Second operand 4 states. [2019-10-14 23:19:20,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:20,323 INFO L93 Difference]: Finished difference Result 1523 states and 2426 transitions. [2019-10-14 23:19:20,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:19:20,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-14 23:19:20,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:20,329 INFO L225 Difference]: With dead ends: 1523 [2019-10-14 23:19:20,330 INFO L226 Difference]: Without dead ends: 808 [2019-10-14 23:19:20,333 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:20,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2019-10-14 23:19:20,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2019-10-14 23:19:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-10-14 23:19:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1279 transitions. [2019-10-14 23:19:20,361 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1279 transitions. Word has length 124 [2019-10-14 23:19:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:20,361 INFO L462 AbstractCegarLoop]: Abstraction has 808 states and 1279 transitions. [2019-10-14 23:19:20,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:20,362 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1279 transitions. [2019-10-14 23:19:20,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-14 23:19:20,364 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:20,364 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:20,571 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:20,572 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:20,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:20,573 INFO L82 PathProgramCache]: Analyzing trace with hash 875190530, now seen corresponding path program 1 times [2019-10-14 23:19:20,573 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:20,573 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540938886] [2019-10-14 23:19:20,573 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:20,573 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:20,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,475 WARN L191 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:21,740 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:21,740 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540938886] [2019-10-14 23:19:21,741 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977547668] [2019-10-14 23:19:21,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:22,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 2895 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-14 23:19:22,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:22,320 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-14 23:19:22,321 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:22,321 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-10-14 23:19:22,323 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309416361] [2019-10-14 23:19:22,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:19:22,324 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:22,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:19:22,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:19:22,324 INFO L87 Difference]: Start difference. First operand 808 states and 1279 transitions. Second operand 3 states. [2019-10-14 23:19:22,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:22,479 INFO L93 Difference]: Finished difference Result 2108 states and 3370 transitions. [2019-10-14 23:19:22,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:19:22,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-10-14 23:19:22,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:22,490 INFO L225 Difference]: With dead ends: 2108 [2019-10-14 23:19:22,491 INFO L226 Difference]: Without dead ends: 1449 [2019-10-14 23:19:22,495 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:19:22,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2019-10-14 23:19:22,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1376. [2019-10-14 23:19:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2019-10-14 23:19:22,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 2200 transitions. [2019-10-14 23:19:22,577 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 2200 transitions. Word has length 126 [2019-10-14 23:19:22,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:22,578 INFO L462 AbstractCegarLoop]: Abstraction has 1376 states and 2200 transitions. [2019-10-14 23:19:22,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:19:22,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 2200 transitions. [2019-10-14 23:19:22,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-14 23:19:22,586 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:22,587 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:22,794 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:22,795 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:22,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:22,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1193387823, now seen corresponding path program 1 times [2019-10-14 23:19:22,796 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:22,796 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826952037] [2019-10-14 23:19:22,796 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:22,796 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:22,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,687 WARN L191 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:19:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,139 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-10-14 23:19:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 23:19:24,279 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826952037] [2019-10-14 23:19:24,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798365436] [2019-10-14 23:19:24,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:24,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-14 23:19:24,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-14 23:19:24,963 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:24,964 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2019-10-14 23:19:24,964 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806115508] [2019-10-14 23:19:24,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:19:24,965 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:24,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:19:24,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:19:24,965 INFO L87 Difference]: Start difference. First operand 1376 states and 2200 transitions. Second operand 6 states. [2019-10-14 23:19:25,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:25,757 INFO L93 Difference]: Finished difference Result 3426 states and 5469 transitions. [2019-10-14 23:19:25,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:19:25,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 184 [2019-10-14 23:19:25,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:25,774 INFO L225 Difference]: With dead ends: 3426 [2019-10-14 23:19:25,774 INFO L226 Difference]: Without dead ends: 2199 [2019-10-14 23:19:25,781 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:19:25,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2019-10-14 23:19:25,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2195. [2019-10-14 23:19:25,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2195 states. [2019-10-14 23:19:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3480 transitions. [2019-10-14 23:19:25,864 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3480 transitions. Word has length 184 [2019-10-14 23:19:25,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:25,865 INFO L462 AbstractCegarLoop]: Abstraction has 2195 states and 3480 transitions. [2019-10-14 23:19:25,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:19:25,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3480 transitions. [2019-10-14 23:19:25,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-14 23:19:25,873 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:25,873 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]