java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:21:29,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:21:29,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:21:29,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:21:29,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:21:29,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:21:29,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:21:29,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:21:29,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:21:29,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:21:29,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:21:29,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:21:29,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:21:29,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:21:29,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:21:29,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:21:29,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:21:29,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:21:29,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:21:29,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:21:29,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:21:29,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:21:29,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:21:29,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:21:29,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:21:29,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:21:29,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:21:29,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:21:29,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:21:29,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:21:29,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:21:29,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:21:29,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:21:29,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:21:29,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:21:29,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:21:29,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:21:29,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:21:29,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:21:29,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:21:29,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:21:29,952 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 19:21:29,973 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:21:29,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:21:29,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:21:29,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:21:29,976 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:21:29,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:21:29,976 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:21:29,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:21:29,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:21:29,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:21:29,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:21:29,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:21:29,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:21:29,979 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:21:29,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:21:29,979 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:21:29,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:21:29,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:21:29,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:21:29,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:21:29,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:21:29,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:21:29,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:21:29,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:21:29,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:21:29,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:21:29,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:21:29,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:21:29,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:21:30,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:21:30,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:21:30,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:21:30,275 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:21:30,275 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:21:30,276 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c [2019-10-13 19:21:30,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e225f79a/793ea6744f30491c94e1ac80e4bdca16/FLAG93b38c4c5 [2019-10-13 19:21:30,970 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:21:30,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c [2019-10-13 19:21:30,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e225f79a/793ea6744f30491c94e1ac80e4bdca16/FLAG93b38c4c5 [2019-10-13 19:21:31,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e225f79a/793ea6744f30491c94e1ac80e4bdca16 [2019-10-13 19:21:31,167 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:21:31,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:21:31,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:21:31,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:21:31,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:21:31,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:21:31" (1/1) ... [2019-10-13 19:21:31,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e0108d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:31, skipping insertion in model container [2019-10-13 19:21:31,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:21:31" (1/1) ... [2019-10-13 19:21:31,181 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:21:31,248 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:21:31,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:21:31,971 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:21:32,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:21:32,182 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:21:32,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:32 WrapperNode [2019-10-13 19:21:32,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:21:32,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:21:32,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:21:32,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:21:32,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:32" (1/1) ... [2019-10-13 19:21:32,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:32" (1/1) ... [2019-10-13 19:21:32,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:32" (1/1) ... [2019-10-13 19:21:32,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:32" (1/1) ... [2019-10-13 19:21:32,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:32" (1/1) ... [2019-10-13 19:21:32,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:32" (1/1) ... [2019-10-13 19:21:32,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:32" (1/1) ... [2019-10-13 19:21:32,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:21:32,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:21:32,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:21:32,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:21:32,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:21:32,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:21:32,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:21:32,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:21:32,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:21:32,476 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:21:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:21:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:21:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:21:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:21:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:21:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:21:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:21:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:21:32,479 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:21:32,479 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:21:32,479 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:21:32,479 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:21:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:21:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:21:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:21:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:21:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:21:32,481 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:21:32,481 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:21:32,481 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:21:32,481 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:21:32,482 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:21:32,482 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:21:32,482 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:21:32,482 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:21:32,483 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:21:32,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:21:32,483 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:21:32,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:21:32,484 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:21:32,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:21:32,484 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:21:32,484 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:21:32,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:21:32,484 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:21:32,485 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:21:32,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:21:32,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:21:32,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:21:32,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:21:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:21:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:21:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:21:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:21:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:21:32,487 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:21:32,487 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 19:21:32,487 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:21:32,487 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:21:32,488 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:21:32,488 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:21:32,488 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:21:32,488 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:21:32,489 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:21:32,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:21:32,489 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:21:32,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:21:32,490 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:21:32,490 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:21:32,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:21:32,490 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:21:32,491 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:21:32,491 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:21:32,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:21:32,491 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:21:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-13 19:21:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:21:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-13 19:21:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:21:32,493 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:21:32,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:21:32,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:21:32,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:21:32,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:21:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:21:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:21:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:21:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:21:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:21:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:21:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:21:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:21:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:21:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:21:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:21:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:21:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:21:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:21:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:21:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:21:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:21:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:21:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:21:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:21:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:21:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:21:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:21:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:21:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:21:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:21:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:21:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:21:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:21:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:21:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:21:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:21:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:21:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:21:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:21:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:21:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:21:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:21:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:21:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:21:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:21:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:21:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:21:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:21:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:21:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:21:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:21:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:21:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:21:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:21:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:21:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:21:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:21:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:21:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:21:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:21:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:21:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:21:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:21:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:21:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:21:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:21:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:21:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:21:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:21:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:21:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:21:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:21:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:21:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:21:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:21:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:21:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:21:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:21:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 19:21:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:21:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:21:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:21:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:21:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:21:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:21:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:21:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:21:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:21:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:21:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:21:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:21:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-13 19:21:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:21:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-13 19:21:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:21:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:21:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:21:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:21:35,136 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:21:35,136 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:21:35,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:35 BoogieIcfgContainer [2019-10-13 19:21:35,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:21:35,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:21:35,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:21:35,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:21:35,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:21:31" (1/3) ... [2019-10-13 19:21:35,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747a5f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:35, skipping insertion in model container [2019-10-13 19:21:35,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:32" (2/3) ... [2019-10-13 19:21:35,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747a5f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:35, skipping insertion in model container [2019-10-13 19:21:35,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:35" (3/3) ... [2019-10-13 19:21:35,147 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2019-10-13 19:21:35,157 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:21:35,168 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:21:35,180 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:21:35,212 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:21:35,212 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:21:35,212 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:21:35,212 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:21:35,212 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:21:35,213 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:21:35,213 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:21:35,213 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:21:35,249 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states. [2019-10-13 19:21:35,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 19:21:35,266 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:35,267 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:35,269 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:35,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:35,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2022384104, now seen corresponding path program 1 times [2019-10-13 19:21:35,286 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:35,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999894636] [2019-10-13 19:21:35,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:35,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:35,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,934 WARN L191 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,268 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,455 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:37,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999894636] [2019-10-13 19:21:37,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861434154] [2019-10-13 19:21:37,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:38,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:21:38,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:21:38,389 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:38,390 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-10-13 19:21:38,390 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21063641] [2019-10-13 19:21:38,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:21:38,396 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:38,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:21:38,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:21:38,413 INFO L87 Difference]: Start difference. First operand 806 states. Second operand 2 states. [2019-10-13 19:21:38,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:38,498 INFO L93 Difference]: Finished difference Result 682 states and 1081 transitions. [2019-10-13 19:21:38,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:21:38,506 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 116 [2019-10-13 19:21:38,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:38,545 INFO L225 Difference]: With dead ends: 682 [2019-10-13 19:21:38,545 INFO L226 Difference]: Without dead ends: 645 [2019-10-13 19:21:38,550 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:21:38,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2019-10-13 19:21:38,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2019-10-13 19:21:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-10-13 19:21:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1026 transitions. [2019-10-13 19:21:38,690 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1026 transitions. Word has length 116 [2019-10-13 19:21:38,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:38,692 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 1026 transitions. [2019-10-13 19:21:38,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:21:38,692 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1026 transitions. [2019-10-13 19:21:38,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 19:21:38,701 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:38,703 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:38,908 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:38,910 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:38,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:38,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1798333227, now seen corresponding path program 1 times [2019-10-13 19:21:38,911 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:38,912 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149433710] [2019-10-13 19:21:38,912 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:38,912 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:38,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,136 WARN L191 SmtUtils]: Spent 950.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,425 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,623 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:40,970 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:40,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149433710] [2019-10-13 19:21:40,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270251991] [2019-10-13 19:21:40,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:41,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 3173 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:41,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:41,662 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:41,662 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:41,662 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078415760] [2019-10-13 19:21:41,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:41,664 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:41,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:41,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:41,665 INFO L87 Difference]: Start difference. First operand 645 states and 1026 transitions. Second operand 4 states. [2019-10-13 19:21:41,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:41,797 INFO L93 Difference]: Finished difference Result 1262 states and 2025 transitions. [2019-10-13 19:21:41,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:41,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 19:21:41,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:41,804 INFO L225 Difference]: With dead ends: 1262 [2019-10-13 19:21:41,804 INFO L226 Difference]: Without dead ends: 645 [2019-10-13 19:21:41,812 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:41,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2019-10-13 19:21:41,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2019-10-13 19:21:41,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-10-13 19:21:41,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1025 transitions. [2019-10-13 19:21:41,859 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1025 transitions. Word has length 118 [2019-10-13 19:21:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:41,860 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 1025 transitions. [2019-10-13 19:21:41,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1025 transitions. [2019-10-13 19:21:41,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 19:21:41,866 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:41,866 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:42,073 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:42,074 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:42,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:42,075 INFO L82 PathProgramCache]: Analyzing trace with hash 2025770863, now seen corresponding path program 1 times [2019-10-13 19:21:42,075 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:42,076 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863641683] [2019-10-13 19:21:42,076 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:42,076 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:42,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,157 WARN L191 SmtUtils]: Spent 927.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,417 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,570 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:43,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863641683] [2019-10-13 19:21:43,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206708968] [2019-10-13 19:21:43,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:44,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 3175 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:44,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:44,448 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:44,448 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:44,448 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952490336] [2019-10-13 19:21:44,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:44,449 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:44,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:44,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:44,450 INFO L87 Difference]: Start difference. First operand 645 states and 1025 transitions. Second operand 4 states. [2019-10-13 19:21:44,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:44,537 INFO L93 Difference]: Finished difference Result 1262 states and 2023 transitions. [2019-10-13 19:21:44,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:44,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-13 19:21:44,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:44,550 INFO L225 Difference]: With dead ends: 1262 [2019-10-13 19:21:44,551 INFO L226 Difference]: Without dead ends: 645 [2019-10-13 19:21:44,556 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:44,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2019-10-13 19:21:44,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2019-10-13 19:21:44,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-10-13 19:21:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1024 transitions. [2019-10-13 19:21:44,597 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1024 transitions. Word has length 120 [2019-10-13 19:21:44,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:44,597 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 1024 transitions. [2019-10-13 19:21:44,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1024 transitions. [2019-10-13 19:21:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 19:21:44,601 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:44,601 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:44,808 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:44,809 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:44,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:44,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1223604915, now seen corresponding path program 1 times [2019-10-13 19:21:44,810 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:44,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581061455] [2019-10-13 19:21:44,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:44,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:44,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:45,806 WARN L191 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,150 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,337 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:46,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581061455] [2019-10-13 19:21:46,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190333326] [2019-10-13 19:21:46,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:47,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 3177 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:47,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:47,318 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:47,322 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:47,323 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269487042] [2019-10-13 19:21:47,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:47,325 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:47,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:47,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:47,326 INFO L87 Difference]: Start difference. First operand 645 states and 1024 transitions. Second operand 4 states. [2019-10-13 19:21:47,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:47,427 INFO L93 Difference]: Finished difference Result 1269 states and 2030 transitions. [2019-10-13 19:21:47,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:47,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-13 19:21:47,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:47,434 INFO L225 Difference]: With dead ends: 1269 [2019-10-13 19:21:47,434 INFO L226 Difference]: Without dead ends: 654 [2019-10-13 19:21:47,437 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-10-13 19:21:47,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2019-10-13 19:21:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-10-13 19:21:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1036 transitions. [2019-10-13 19:21:47,467 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1036 transitions. Word has length 122 [2019-10-13 19:21:47,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:47,467 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 1036 transitions. [2019-10-13 19:21:47,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:47,467 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1036 transitions. [2019-10-13 19:21:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 19:21:47,471 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:47,472 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:47,679 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:47,679 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:47,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:47,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1957225257, now seen corresponding path program 1 times [2019-10-13 19:21:47,680 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:47,680 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494674488] [2019-10-13 19:21:47,680 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:47,680 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:47,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:48,620 WARN L191 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:48,879 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,110 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:49,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494674488] [2019-10-13 19:21:49,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821394162] [2019-10-13 19:21:49,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:50,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 3178 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:50,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:50,104 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:50,104 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:50,105 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891958147] [2019-10-13 19:21:50,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:50,107 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:50,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:50,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:50,107 INFO L87 Difference]: Start difference. First operand 654 states and 1036 transitions. Second operand 4 states. [2019-10-13 19:21:50,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:50,194 INFO L93 Difference]: Finished difference Result 1271 states and 2031 transitions. [2019-10-13 19:21:50,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:50,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-13 19:21:50,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:50,204 INFO L225 Difference]: With dead ends: 1271 [2019-10-13 19:21:50,204 INFO L226 Difference]: Without dead ends: 654 [2019-10-13 19:21:50,212 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:50,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-10-13 19:21:50,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2019-10-13 19:21:50,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-10-13 19:21:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1035 transitions. [2019-10-13 19:21:50,246 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1035 transitions. Word has length 123 [2019-10-13 19:21:50,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:50,246 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 1035 transitions. [2019-10-13 19:21:50,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:50,247 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1035 transitions. [2019-10-13 19:21:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 19:21:50,251 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:50,252 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:50,470 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:50,471 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:50,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:50,471 INFO L82 PathProgramCache]: Analyzing trace with hash 974787383, now seen corresponding path program 1 times [2019-10-13 19:21:50,472 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:50,472 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087458265] [2019-10-13 19:21:50,472 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:50,473 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:50,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:51,550 WARN L191 SmtUtils]: Spent 936.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:51,884 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,073 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:52,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087458265] [2019-10-13 19:21:52,308 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711418419] [2019-10-13 19:21:52,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:52,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:52,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:52,913 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:52,913 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:52,913 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422670765] [2019-10-13 19:21:52,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:52,914 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:52,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:52,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:52,915 INFO L87 Difference]: Start difference. First operand 654 states and 1035 transitions. Second operand 4 states. [2019-10-13 19:21:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:52,994 INFO L93 Difference]: Finished difference Result 1271 states and 2030 transitions. [2019-10-13 19:21:52,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:52,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-13 19:21:52,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:53,000 INFO L225 Difference]: With dead ends: 1271 [2019-10-13 19:21:53,000 INFO L226 Difference]: Without dead ends: 654 [2019-10-13 19:21:53,004 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-10-13 19:21:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2019-10-13 19:21:53,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-10-13 19:21:53,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1034 transitions. [2019-10-13 19:21:53,035 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1034 transitions. Word has length 124 [2019-10-13 19:21:53,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:53,037 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 1034 transitions. [2019-10-13 19:21:53,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1034 transitions. [2019-10-13 19:21:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 19:21:53,039 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:53,039 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:53,247 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:53,247 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:53,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:53,247 INFO L82 PathProgramCache]: Analyzing trace with hash 131398875, now seen corresponding path program 1 times [2019-10-13 19:21:53,248 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:53,248 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764764789] [2019-10-13 19:21:53,248 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:53,248 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:53,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,280 WARN L191 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,572 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,752 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:21:55,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764764789] [2019-10-13 19:21:55,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127661082] [2019-10-13 19:21:55,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:55,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:55,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:21:55,971 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:55,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-10-13 19:21:55,971 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768834416] [2019-10-13 19:21:55,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:55,974 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:55,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:55,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:21:55,974 INFO L87 Difference]: Start difference. First operand 654 states and 1034 transitions. Second operand 4 states. [2019-10-13 19:21:56,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:56,170 INFO L93 Difference]: Finished difference Result 1270 states and 2030 transitions. [2019-10-13 19:21:56,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:56,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-13 19:21:56,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:56,177 INFO L225 Difference]: With dead ends: 1270 [2019-10-13 19:21:56,177 INFO L226 Difference]: Without dead ends: 654 [2019-10-13 19:21:56,183 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:21:56,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-10-13 19:21:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2019-10-13 19:21:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-10-13 19:21:56,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1029 transitions. [2019-10-13 19:21:56,204 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1029 transitions. Word has length 125 [2019-10-13 19:21:56,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:56,205 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 1029 transitions. [2019-10-13 19:21:56,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:56,205 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1029 transitions. [2019-10-13 19:21:56,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 19:21:56,207 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:56,207 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:56,416 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:56,416 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:56,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:56,417 INFO L82 PathProgramCache]: Analyzing trace with hash 2025700873, now seen corresponding path program 1 times [2019-10-13 19:21:56,417 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:56,417 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343389715] [2019-10-13 19:21:56,417 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:56,418 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:56,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:57,361 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:57,642 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:57,830 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:21:58,297 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343389715] [2019-10-13 19:21:58,297 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349736984] [2019-10-13 19:21:58,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:59,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 3182 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:59,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:21:59,145 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:59,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2019-10-13 19:21:59,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843556140] [2019-10-13 19:21:59,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:59,150 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:59,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:59,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:21:59,152 INFO L87 Difference]: Start difference. First operand 654 states and 1029 transitions. Second operand 4 states. [2019-10-13 19:21:59,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:59,307 INFO L93 Difference]: Finished difference Result 1270 states and 2020 transitions. [2019-10-13 19:21:59,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:59,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-10-13 19:21:59,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:59,315 INFO L225 Difference]: With dead ends: 1270 [2019-10-13 19:21:59,316 INFO L226 Difference]: Without dead ends: 654 [2019-10-13 19:21:59,319 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:21:59,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-10-13 19:21:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2019-10-13 19:21:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-10-13 19:21:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1024 transitions. [2019-10-13 19:21:59,343 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1024 transitions. Word has length 127 [2019-10-13 19:21:59,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:59,345 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 1024 transitions. [2019-10-13 19:21:59,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:59,345 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1024 transitions. [2019-10-13 19:21:59,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 19:21:59,348 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:59,349 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:59,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:59,556 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:59,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:59,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1647818991, now seen corresponding path program 1 times [2019-10-13 19:21:59,557 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:59,557 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659197279] [2019-10-13 19:21:59,557 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:59,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:59,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:00,649 WARN L191 SmtUtils]: Spent 926.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:22:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:00,932 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:22:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,123 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:22:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:22:01,510 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659197279] [2019-10-13 19:22:01,510 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619857473] [2019-10-13 19:22:01,510 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 19:22:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:02,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:22:02,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:22:02,114 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:22:02,114 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:22:02,114 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-10-13 19:22:02,114 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408082628] [2019-10-13 19:22:02,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:22:02,115 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:22:02,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:22:02,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:22:02,116 INFO L87 Difference]: Start difference. First operand 654 states and 1024 transitions. Second operand 4 states. [2019-10-13 19:22:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:22:02,328 INFO L93 Difference]: Finished difference Result 1306 states and 2069 transitions. [2019-10-13 19:22:02,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:22:02,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-10-13 19:22:02,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:22:02,333 INFO L225 Difference]: With dead ends: 1306 [2019-10-13 19:22:02,334 INFO L226 Difference]: Without dead ends: 693 [2019-10-13 19:22:02,337 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:22:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2019-10-13 19:22:02,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2019-10-13 19:22:02,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2019-10-13 19:22:02,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1088 transitions. [2019-10-13 19:22:02,364 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1088 transitions. Word has length 129 [2019-10-13 19:22:02,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:22:02,365 INFO L462 AbstractCegarLoop]: Abstraction has 693 states and 1088 transitions. [2019-10-13 19:22:02,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:22:02,365 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1088 transitions. [2019-10-13 19:22:02,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 19:22:02,368 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:22:02,369 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:22:02,579 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:22:02,579 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:22:02,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:22:02,580 INFO L82 PathProgramCache]: Analyzing trace with hash 999739231, now seen corresponding path program 1 times [2019-10-13 19:22:02,580 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:22:02,580 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471219824] [2019-10-13 19:22:02,581 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:22:02,581 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:22:02,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:22:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:03,580 WARN L191 SmtUtils]: Spent 849.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:22:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:22:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat