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_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:19:39,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:19:39,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:19:39,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:19:39,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:19:39,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:19:39,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:19:39,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:19:39,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:19:39,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:19:39,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:19:39,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:19:39,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:19:39,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:19:39,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:19:39,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:19:39,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:19:39,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:19:39,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:19:39,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:19:39,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:19:39,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:19:39,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:19:39,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:19:39,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:19:39,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:19:39,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:19:39,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:19:39,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:19:39,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:19:39,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:19:39,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:19:39,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:19:39,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:19:39,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:19:39,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:19:39,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:19:39,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:19:39,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:19:39,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:19:39,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:19:39,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:19:39,358 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:19:39,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:19:39,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:19:39,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:19:39,361 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:19:39,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:19:39,361 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:19:39,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:19:39,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:19:39,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:19:39,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:19:39,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:19:39,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:19:39,364 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:19:39,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:19:39,364 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:19:39,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:19:39,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:19:39,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:19:39,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:19:39,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:19:39,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:39,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:19:39,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:19:39,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:19:39,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:19:39,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:19:39,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:19:39,367 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:19:39,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:19:39,712 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:19:39,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:19:39,717 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:19:39,717 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:19:39,718 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c [2019-10-13 19:19:39,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/112e9ec8f/9fdc838873ce4b8e89d52b62c63c7bf5/FLAG68e75b1cb [2019-10-13 19:19:40,408 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:19:40,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c [2019-10-13 19:19:40,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/112e9ec8f/9fdc838873ce4b8e89d52b62c63c7bf5/FLAG68e75b1cb [2019-10-13 19:19:40,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/112e9ec8f/9fdc838873ce4b8e89d52b62c63c7bf5 [2019-10-13 19:19:40,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:19:40,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:19:40,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:40,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:19:40,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:19:40,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:40" (1/1) ... [2019-10-13 19:19:40,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b1071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:40, skipping insertion in model container [2019-10-13 19:19:40,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:40" (1/1) ... [2019-10-13 19:19:40,640 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:19:40,704 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:19:41,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:41,396 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:19:41,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:41,595 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:19:41,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:41 WrapperNode [2019-10-13 19:19:41,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:41,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:19:41,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:19:41,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:19:41,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:41" (1/1) ... [2019-10-13 19:19:41,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:41" (1/1) ... [2019-10-13 19:19:41,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:41" (1/1) ... [2019-10-13 19:19:41,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:41" (1/1) ... [2019-10-13 19:19:41,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:41" (1/1) ... [2019-10-13 19:19:41,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:41" (1/1) ... [2019-10-13 19:19:41,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:41" (1/1) ... [2019-10-13 19:19:41,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:19:41,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:19:41,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:19:41,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:19:41,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:41,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:19:41,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:19:41,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:19:41,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:19:41,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:19:41,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:19:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:19:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:19:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:19:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:19:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:19:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:19:41,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:19:41,894 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:19:41,894 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:19:41,894 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:19:41,894 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:19:41,895 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:19:41,895 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:19:41,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:19:41,895 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:19:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:19:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:19:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:19:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:19:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:19:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 19:19:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 19:19:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:19:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:19:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:19:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 19:19:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 19:19:41,899 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:19:41,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:19:41,899 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:19:41,899 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 19:19:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:19:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 19:19:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:19:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:19:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 19:19:41,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 19:19:41,901 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:19:41,901 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:19:41,901 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:19:41,902 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:19:41,902 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:19:41,902 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:19:41,902 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:19:41,903 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:19:41,903 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:19:41,903 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:19:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:19:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:19:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:19:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:19:41,905 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:19:41,905 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:19:41,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:19:41,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:19:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:19:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:19:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:19:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:19:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:19:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:19:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:19:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:19:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:19:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:19:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-13 19:19:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-13 19:19:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:19:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:19:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:19:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:19:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:19:41,910 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:19:41,910 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:19:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:19:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:19:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:19:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:19:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:19:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:19:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:19:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:19:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:19:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:19:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:19:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:19:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:19:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:19:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:19:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:19:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:19:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:19:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:19:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:19:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:19:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:19:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:19:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:19:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:19:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:19:41,916 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:19:41,916 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:19:41,916 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:19:41,916 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:19:41,917 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:19:41,917 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:19:41,917 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:19:41,917 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:19:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:19:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:19:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:19:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:19:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:19:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:19:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:19:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:19:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:19:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:19:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:19:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:19:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 19:19:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 19:19:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:19:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:19:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:19:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:19:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:19:41,921 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:19:41,921 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:19:41,921 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 19:19:41,921 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 19:19:41,921 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:19:41,921 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:19:41,921 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 19:19:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 19:19:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:19:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:19:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:19:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 19:19:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-13 19:19:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-13 19:19:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 19:19:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:19:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:19:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:19:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:19:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:19:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:19:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:19:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:19:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:19:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:19:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:19:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:19:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:19:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:19:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:19:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:19:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:19:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:19:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:19:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:19:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:19:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:19:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:19:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:19:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:19:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:19:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:19:44,308 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:19:44,308 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:19:44,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:44 BoogieIcfgContainer [2019-10-13 19:19:44,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:19:44,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:19:44,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:19:44,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:19:44,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:19:40" (1/3) ... [2019-10-13 19:19:44,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799789b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:44, skipping insertion in model container [2019-10-13 19:19:44,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:41" (2/3) ... [2019-10-13 19:19:44,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799789b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:44, skipping insertion in model container [2019-10-13 19:19:44,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:44" (3/3) ... [2019-10-13 19:19:44,320 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2019-10-13 19:19:44,330 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:19:44,339 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:19:44,351 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:19:44,394 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:19:44,394 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:19:44,394 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:19:44,394 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:19:44,394 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:19:44,394 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:19:44,395 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:19:44,395 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:19:44,437 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states. [2019-10-13 19:19:44,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 19:19:44,465 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:44,466 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:44,468 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:44,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:44,474 INFO L82 PathProgramCache]: Analyzing trace with hash -270219278, now seen corresponding path program 1 times [2019-10-13 19:19:44,483 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:44,483 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62880143] [2019-10-13 19:19:44,484 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:44,484 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:44,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,087 WARN L191 SmtUtils]: Spent 942.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:19:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:19:46,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62880143] [2019-10-13 19:19:46,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299729907] [2019-10-13 19:19:46,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:47,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 2890 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:19:47,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:19:47,194 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:47,194 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-10-13 19:19:47,195 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046252953] [2019-10-13 19:19:47,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:19:47,201 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:47,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:19:47,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:47,217 INFO L87 Difference]: Start difference. First operand 835 states. Second operand 2 states. [2019-10-13 19:19:47,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:47,323 INFO L93 Difference]: Finished difference Result 1349 states and 2167 transitions. [2019-10-13 19:19:47,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:19:47,324 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 113 [2019-10-13 19:19:47,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:47,349 INFO L225 Difference]: With dead ends: 1349 [2019-10-13 19:19:47,349 INFO L226 Difference]: Without dead ends: 682 [2019-10-13 19:19:47,361 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:47,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-10-13 19:19:47,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-10-13 19:19:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-10-13 19:19:47,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1075 transitions. [2019-10-13 19:19:47,489 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1075 transitions. Word has length 113 [2019-10-13 19:19:47,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:47,491 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1075 transitions. [2019-10-13 19:19:47,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:19:47,492 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1075 transitions. [2019-10-13 19:19:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 19:19:47,500 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:47,502 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:47,710 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:47,711 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:47,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:47,712 INFO L82 PathProgramCache]: Analyzing trace with hash 536745362, now seen corresponding path program 1 times [2019-10-13 19:19:47,713 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:47,713 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567760335] [2019-10-13 19:19:47,713 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:47,714 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:47,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,778 WARN L191 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:19:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:19:49,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567760335] [2019-10-13 19:19:49,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594122221] [2019-10-13 19:19:49,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:49,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:19:49,762 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:49,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2019-10-13 19:19:49,763 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233472418] [2019-10-13 19:19:49,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:49,764 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:49,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:49,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:19:49,765 INFO L87 Difference]: Start difference. First operand 682 states and 1075 transitions. Second operand 4 states. [2019-10-13 19:19:49,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:49,893 INFO L93 Difference]: Finished difference Result 1347 states and 2140 transitions. [2019-10-13 19:19:49,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:49,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-10-13 19:19:49,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:49,901 INFO L225 Difference]: With dead ends: 1347 [2019-10-13 19:19:49,901 INFO L226 Difference]: Without dead ends: 691 [2019-10-13 19:19:49,905 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:19:49,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-10-13 19:19:49,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2019-10-13 19:19:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2019-10-13 19:19:49,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1089 transitions. [2019-10-13 19:19:49,949 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1089 transitions. Word has length 113 [2019-10-13 19:19:49,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:49,949 INFO L462 AbstractCegarLoop]: Abstraction has 691 states and 1089 transitions. [2019-10-13 19:19:49,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:49,950 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1089 transitions. [2019-10-13 19:19:49,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-13 19:19:49,952 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:49,952 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:50,167 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:50,168 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:50,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:50,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1841317292, now seen corresponding path program 1 times [2019-10-13 19:19:50,170 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:50,170 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485355086] [2019-10-13 19:19:50,171 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:50,171 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:50,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,112 WARN L191 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:19:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:19:51,399 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485355086] [2019-10-13 19:19:51,399 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322646036] [2019-10-13 19:19:51,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:19:52,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:19:52,148 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:52,148 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-13 19:19:52,149 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395416377] [2019-10-13 19:19:52,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:19:52,150 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:52,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:19:52,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:19:52,150 INFO L87 Difference]: Start difference. First operand 691 states and 1089 transitions. Second operand 7 states. [2019-10-13 19:19:52,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:52,312 INFO L93 Difference]: Finished difference Result 1365 states and 2165 transitions. [2019-10-13 19:19:52,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:19:52,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-13 19:19:52,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:52,319 INFO L225 Difference]: With dead ends: 1365 [2019-10-13 19:19:52,319 INFO L226 Difference]: Without dead ends: 702 [2019-10-13 19:19:52,322 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:19:52,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-13 19:19:52,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 698. [2019-10-13 19:19:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2019-10-13 19:19:52,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1101 transitions. [2019-10-13 19:19:52,366 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1101 transitions. Word has length 115 [2019-10-13 19:19:52,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:52,367 INFO L462 AbstractCegarLoop]: Abstraction has 698 states and 1101 transitions. [2019-10-13 19:19:52,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:19:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1101 transitions. [2019-10-13 19:19:52,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 19:19:52,371 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:52,371 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:52,581 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:52,589 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:52,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:52,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1924153805, now seen corresponding path program 1 times [2019-10-13 19:19:52,589 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:52,590 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860543867] [2019-10-13 19:19:52,590 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:52,590 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:52,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,697 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:19:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:19:54,071 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860543867] [2019-10-13 19:19:54,071 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984634504] [2019-10-13 19:19:54,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:54,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:54,741 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:19:54,741 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:54,742 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:19:54,742 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626775586] [2019-10-13 19:19:54,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:54,743 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:54,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:54,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:19:54,743 INFO L87 Difference]: Start difference. First operand 698 states and 1101 transitions. Second operand 4 states. [2019-10-13 19:19:54,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:54,842 INFO L93 Difference]: Finished difference Result 1381 states and 2190 transitions. [2019-10-13 19:19:54,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:54,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-10-13 19:19:54,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:54,848 INFO L225 Difference]: With dead ends: 1381 [2019-10-13 19:19:54,849 INFO L226 Difference]: Without dead ends: 709 [2019-10-13 19:19:54,852 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:54,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2019-10-13 19:19:54,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 707. [2019-10-13 19:19:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-10-13 19:19:54,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1109 transitions. [2019-10-13 19:19:54,883 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1109 transitions. Word has length 116 [2019-10-13 19:19:54,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:54,883 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 1109 transitions. [2019-10-13 19:19:54,883 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:54,883 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1109 transitions. [2019-10-13 19:19:54,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 19:19:54,885 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:54,886 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] [2019-10-13 19:19:55,093 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:55,093 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:55,094 INFO L82 PathProgramCache]: Analyzing trace with hash 546326437, now seen corresponding path program 1 times [2019-10-13 19:19:55,094 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:55,094 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024143800] [2019-10-13 19:19:55,094 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:55,095 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:55,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:55,984 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:19:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:19:56,303 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024143800] [2019-10-13 19:19:56,303 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058221756] [2019-10-13 19:19:56,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:19:56,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:19:56,917 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:56,917 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-10-13 19:19:56,917 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434020292] [2019-10-13 19:19:56,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:19:56,918 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:56,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:19:56,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:19:56,919 INFO L87 Difference]: Start difference. First operand 707 states and 1109 transitions. Second operand 7 states. [2019-10-13 19:19:57,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:57,108 INFO L93 Difference]: Finished difference Result 1382 states and 2181 transitions. [2019-10-13 19:19:57,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:19:57,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-10-13 19:19:57,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:57,128 INFO L225 Difference]: With dead ends: 1382 [2019-10-13 19:19:57,128 INFO L226 Difference]: Without dead ends: 716 [2019-10-13 19:19:57,136 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:19:57,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2019-10-13 19:19:57,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 707. [2019-10-13 19:19:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-10-13 19:19:57,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1109 transitions. [2019-10-13 19:19:57,179 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1109 transitions. Word has length 116 [2019-10-13 19:19:57,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:57,180 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 1109 transitions. [2019-10-13 19:19:57,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:19:57,181 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1109 transitions. [2019-10-13 19:19:57,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 19:19:57,190 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:57,190 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:57,400 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:57,401 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:57,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:57,401 INFO L82 PathProgramCache]: Analyzing trace with hash 736421213, now seen corresponding path program 1 times [2019-10-13 19:19:57,402 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:57,402 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103503732] [2019-10-13 19:19:57,402 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:57,402 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:57,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,291 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:19:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:19:58,600 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103503732] [2019-10-13 19:19:58,600 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621310786] [2019-10-13 19:19:58,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:59,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:19:59,138 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:59,139 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:19:59,139 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348288392] [2019-10-13 19:19:59,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:59,140 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:59,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:59,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:19:59,142 INFO L87 Difference]: Start difference. First operand 707 states and 1109 transitions. Second operand 4 states. [2019-10-13 19:19:59,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:59,430 INFO L93 Difference]: Finished difference Result 1415 states and 2251 transitions. [2019-10-13 19:19:59,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:59,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-13 19:19:59,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:59,441 INFO L225 Difference]: With dead ends: 1415 [2019-10-13 19:19:59,441 INFO L226 Difference]: Without dead ends: 749 [2019-10-13 19:19:59,447 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:59,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2019-10-13 19:19:59,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 746. [2019-10-13 19:19:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-10-13 19:19:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1182 transitions. [2019-10-13 19:19:59,487 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1182 transitions. Word has length 119 [2019-10-13 19:19:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:59,487 INFO L462 AbstractCegarLoop]: Abstraction has 746 states and 1182 transitions. [2019-10-13 19:19:59,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1182 transitions. [2019-10-13 19:19:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 19:19:59,490 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:59,490 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:59,705 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:59,706 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:59,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:59,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1108082173, now seen corresponding path program 1 times [2019-10-13 19:19:59,707 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:59,707 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877619964] [2019-10-13 19:19:59,708 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:59,708 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:59,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,666 WARN L191 SmtUtils]: Spent 869.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:00,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877619964] [2019-10-13 19:20:00,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420933814] [2019-10-13 19:20:00,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:01,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:20:01,500 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:01,501 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:20:01,501 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639664384] [2019-10-13 19:20:01,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:01,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:01,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:01,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:01,505 INFO L87 Difference]: Start difference. First operand 746 states and 1182 transitions. Second operand 4 states. [2019-10-13 19:20:01,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:01,585 INFO L93 Difference]: Finished difference Result 1439 states and 2297 transitions. [2019-10-13 19:20:01,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:01,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-13 19:20:01,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:01,590 INFO L225 Difference]: With dead ends: 1439 [2019-10-13 19:20:01,591 INFO L226 Difference]: Without dead ends: 746 [2019-10-13 19:20:01,594 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:01,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2019-10-13 19:20:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2019-10-13 19:20:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-10-13 19:20:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1177 transitions. [2019-10-13 19:20:01,624 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1177 transitions. Word has length 121 [2019-10-13 19:20:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:01,625 INFO L462 AbstractCegarLoop]: Abstraction has 746 states and 1177 transitions. [2019-10-13 19:20:01,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:01,625 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1177 transitions. [2019-10-13 19:20:01,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 19:20:01,627 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:01,627 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:01,834 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:01,835 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:01,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:01,835 INFO L82 PathProgramCache]: Analyzing trace with hash -546984174, now seen corresponding path program 1 times [2019-10-13 19:20:01,835 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:01,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380924094] [2019-10-13 19:20:01,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:01,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:01,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,978 WARN L191 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:03,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380924094] [2019-10-13 19:20:03,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631302369] [2019-10-13 19:20:03,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 2892 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:03,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:20:03,817 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:03,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-13 19:20:03,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828408681] [2019-10-13 19:20:03,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:03,818 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:03,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:03,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:03,819 INFO L87 Difference]: Start difference. First operand 746 states and 1177 transitions. Second operand 7 states. [2019-10-13 19:20:03,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:03,962 INFO L93 Difference]: Finished difference Result 1407 states and 2229 transitions. [2019-10-13 19:20:03,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:03,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2019-10-13 19:20:03,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:03,968 INFO L225 Difference]: With dead ends: 1407 [2019-10-13 19:20:03,968 INFO L226 Difference]: Without dead ends: 760 [2019-10-13 19:20:03,972 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:20:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2019-10-13 19:20:04,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 753. [2019-10-13 19:20:04,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-10-13 19:20:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1188 transitions. [2019-10-13 19:20:04,008 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1188 transitions. Word has length 122 [2019-10-13 19:20:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:04,010 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 1188 transitions. [2019-10-13 19:20:04,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:04,010 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1188 transitions. [2019-10-13 19:20:04,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 19:20:04,013 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:04,013 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:04,219 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:04,220 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:04,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:04,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1594119675, now seen corresponding path program 1 times [2019-10-13 19:20:04,221 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:04,221 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937987244] [2019-10-13 19:20:04,222 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:04,222 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:04,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,179 WARN L191 SmtUtils]: Spent 861.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:20:05,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937987244] [2019-10-13 19:20:05,450 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451986388] [2019-10-13 19:20:05,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:05,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:06,029 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:20:06,029 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:06,029 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-13 19:20:06,029 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007963770] [2019-10-13 19:20:06,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:06,030 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:06,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:06,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:06,031 INFO L87 Difference]: Start difference. First operand 753 states and 1188 transitions. Second operand 7 states. [2019-10-13 19:20:06,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:06,194 INFO L93 Difference]: Finished difference Result 1407 states and 2228 transitions. [2019-10-13 19:20:06,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:06,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2019-10-13 19:20:06,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:06,200 INFO L225 Difference]: With dead ends: 1407 [2019-10-13 19:20:06,201 INFO L226 Difference]: Without dead ends: 760 [2019-10-13 19:20:06,204 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:20:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2019-10-13 19:20:06,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 750. [2019-10-13 19:20:06,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-10-13 19:20:06,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1182 transitions. [2019-10-13 19:20:06,231 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1182 transitions. Word has length 123 [2019-10-13 19:20:06,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:06,233 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 1182 transitions. [2019-10-13 19:20:06,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:06,233 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1182 transitions. [2019-10-13 19:20:06,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 19:20:06,236 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:06,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:06,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:06,444 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:06,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:06,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1778368231, now seen corresponding path program 1 times [2019-10-13 19:20:06,445 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:06,445 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824197710] [2019-10-13 19:20:06,445 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:06,445 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:06,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,291 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:07,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824197710] [2019-10-13 19:20:07,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021797065] [2019-10-13 19:20:07,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:08,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:08,116 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:20:08,117 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:08,117 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:20:08,117 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498536635] [2019-10-13 19:20:08,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:08,118 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:08,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:08,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:08,119 INFO L87 Difference]: Start difference. First operand 750 states and 1182 transitions. Second operand 4 states. [2019-10-13 19:20:08,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:08,199 INFO L93 Difference]: Finished difference Result 1443 states and 2297 transitions. [2019-10-13 19:20:08,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:20:08,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-13 19:20:08,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:08,204 INFO L225 Difference]: With dead ends: 1443 [2019-10-13 19:20:08,205 INFO L226 Difference]: Without dead ends: 750 [2019-10-13 19:20:08,208 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:08,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2019-10-13 19:20:08,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2019-10-13 19:20:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-10-13 19:20:08,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1179 transitions. [2019-10-13 19:20:08,243 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1179 transitions. Word has length 123 [2019-10-13 19:20:08,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:08,243 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 1179 transitions. [2019-10-13 19:20:08,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:08,243 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1179 transitions. [2019-10-13 19:20:08,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 19:20:08,246 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:08,246 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:08,457 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:08,458 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:08,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:08,458 INFO L82 PathProgramCache]: Analyzing trace with hash -478392882, now seen corresponding path program 1 times [2019-10-13 19:20:08,458 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:08,459 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155050434] [2019-10-13 19:20:08,459 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:08,459 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:08,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,360 WARN L191 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:20:09,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155050434] [2019-10-13 19:20:09,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411651345] [2019-10-13 19:20:09,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:10,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:20:10,212 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:10,212 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-13 19:20:10,214 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990914142] [2019-10-13 19:20:10,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:10,215 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:10,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:10,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:10,216 INFO L87 Difference]: Start difference. First operand 750 states and 1179 transitions. Second operand 4 states. [2019-10-13 19:20:10,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:10,420 INFO L93 Difference]: Finished difference Result 1439 states and 2291 transitions. [2019-10-13 19:20:10,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:10,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-13 19:20:10,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:10,427 INFO L225 Difference]: With dead ends: 1439 [2019-10-13 19:20:10,427 INFO L226 Difference]: Without dead ends: 792 [2019-10-13 19:20:10,431 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:10,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2019-10-13 19:20:10,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 792. [2019-10-13 19:20:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2019-10-13 19:20:10,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1256 transitions. [2019-10-13 19:20:10,470 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1256 transitions. Word has length 124 [2019-10-13 19:20:10,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:10,472 INFO L462 AbstractCegarLoop]: Abstraction has 792 states and 1256 transitions. [2019-10-13 19:20:10,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:10,472 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1256 transitions. [2019-10-13 19:20:10,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 19:20:10,475 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:10,476 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:10,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:10,684 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:10,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:10,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1453671361, now seen corresponding path program 1 times [2019-10-13 19:20:10,685 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:10,686 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730708735] [2019-10-13 19:20:10,686 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:10,686 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:10,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,709 WARN L191 SmtUtils]: Spent 906.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:11,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730708735] [2019-10-13 19:20:11,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813633655] [2019-10-13 19:20:11,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 2895 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 19:20:12,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:12,557 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 19:20:12,558 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:12,558 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-10-13 19:20:12,558 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071436325] [2019-10-13 19:20:12,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:20:12,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:12,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:20:12,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:20:12,559 INFO L87 Difference]: Start difference. First operand 792 states and 1256 transitions. Second operand 3 states. [2019-10-13 19:20:12,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:12,712 INFO L93 Difference]: Finished difference Result 2074 states and 3321 transitions. [2019-10-13 19:20:12,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:20:12,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-10-13 19:20:12,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:12,723 INFO L225 Difference]: With dead ends: 2074 [2019-10-13 19:20:12,723 INFO L226 Difference]: Without dead ends: 1431 [2019-10-13 19:20:12,727 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:20:12,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2019-10-13 19:20:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1360. [2019-10-13 19:20:12,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1360 states. [2019-10-13 19:20:12,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2177 transitions. [2019-10-13 19:20:12,793 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2177 transitions. Word has length 126 [2019-10-13 19:20:12,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:12,793 INFO L462 AbstractCegarLoop]: Abstraction has 1360 states and 2177 transitions. [2019-10-13 19:20:12,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:20:12,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2177 transitions. [2019-10-13 19:20:12,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-13 19:20:12,801 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:12,801 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:13,008 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:13,009 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:13,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:13,009 INFO L82 PathProgramCache]: Analyzing trace with hash 414118588, now seen corresponding path program 1 times [2019-10-13 19:20:13,009 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:13,009 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346115400] [2019-10-13 19:20:13,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:13,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:13,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,844 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:20:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,269 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-10-13 19:20:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:14,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346115400] [2019-10-13 19:20:14,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225990886] [2019-10-13 19:20:14,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true