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_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:20:34,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:20:34,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:20:34,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:20:34,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:20:34,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:20:34,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:20:34,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:20:34,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:20:34,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:20:34,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:20:34,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:20:34,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:20:34,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:20:34,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:20:34,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:20:34,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:20:34,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:20:34,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:20:34,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:20:34,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:20:34,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:20:34,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:20:34,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:20:34,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:20:34,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:20:34,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:20:34,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:20:34,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:20:34,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:20:34,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:20:34,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:20:34,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:20:34,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:20:34,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:20:34,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:20:34,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:20:34,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:20:34,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:20:34,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:20:34,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:20:34,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:20:34,327 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:20:34,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:20:34,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:20:34,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:20:34,330 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:20:34,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:20:34,331 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:20:34,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:20:34,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:20:34,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:20:34,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:20:34,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:20:34,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:20:34,333 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:20:34,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:20:34,334 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:20:34,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:20:34,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:20:34,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:20:34,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:20:34,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:20:34,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:20:34,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:20:34,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:20:34,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:20:34,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:20:34,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:20:34,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:20:34,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:20:34,644 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:20:34,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:20:34,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:20:34,668 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:20:34,668 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:20:34,669 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_productSimulator.cil.c [2019-10-14 23:20:34,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8958e0a18/3e1dd0c4275746bd89cd728f4cde0e4b/FLAGa28b88ba7 [2019-10-14 23:20:35,419 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:20:35,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_productSimulator.cil.c [2019-10-14 23:20:35,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8958e0a18/3e1dd0c4275746bd89cd728f4cde0e4b/FLAGa28b88ba7 [2019-10-14 23:20:35,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8958e0a18/3e1dd0c4275746bd89cd728f4cde0e4b [2019-10-14 23:20:35,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:20:35,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:20:35,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:20:35,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:20:35,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:20:35,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:35" (1/1) ... [2019-10-14 23:20:35,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5f6572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:35, skipping insertion in model container [2019-10-14 23:20:35,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:35" (1/1) ... [2019-10-14 23:20:35,613 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:20:35,711 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:20:36,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:20:36,521 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:20:36,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:20:36,842 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:20:36,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:36 WrapperNode [2019-10-14 23:20:36,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:20:36,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:20:36,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:20:36,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:20:36,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:36" (1/1) ... [2019-10-14 23:20:36,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:36" (1/1) ... [2019-10-14 23:20:36,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:36" (1/1) ... [2019-10-14 23:20:36,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:36" (1/1) ... [2019-10-14 23:20:36,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:36" (1/1) ... [2019-10-14 23:20:37,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:36" (1/1) ... [2019-10-14 23:20:37,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:36" (1/1) ... [2019-10-14 23:20:37,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:20:37,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:20:37,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:20:37,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:20:37,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:20:37,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:20:37,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:20:37,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:20:37,166 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:20:37,167 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:20:37,168 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:20:37,168 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:20:37,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:20:37,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:20:37,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:20:37,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:20:37,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:20:37,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:20:37,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:20:37,170 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:20:37,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:20:37,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-14 23:20:37,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-14 23:20:37,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-14 23:20:37,174 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-14 23:20:37,174 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-14 23:20:37,175 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-14 23:20:37,175 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-14 23:20:37,175 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-14 23:20:37,175 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-14 23:20:37,176 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-14 23:20:37,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-14 23:20:37,176 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-14 23:20:37,176 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-14 23:20:37,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-14 23:20:37,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-14 23:20:37,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-14 23:20:37,177 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-14 23:20:37,177 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-14 23:20:37,178 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-14 23:20:37,178 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-14 23:20:37,178 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-14 23:20:37,178 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-14 23:20:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-14 23:20:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-14 23:20:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-14 23:20:37,180 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-14 23:20:37,180 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-14 23:20:37,180 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-14 23:20:37,180 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-14 23:20:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-14 23:20:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-14 23:20:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-14 23:20:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-14 23:20:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-14 23:20:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-14 23:20:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-14 23:20:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-14 23:20:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-14 23:20:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-14 23:20:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-14 23:20:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-14 23:20:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-14 23:20:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-14 23:20:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-14 23:20:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-14 23:20:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-14 23:20:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-14 23:20:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-14 23:20:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-14 23:20:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:20:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-14 23:20:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-14 23:20:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-14 23:20:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-14 23:20:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-14 23:20:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-14 23:20:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-14 23:20:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-14 23:20:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-14 23:20:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-14 23:20:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-14 23:20:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-14 23:20:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-14 23:20:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-14 23:20:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-14 23:20:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-14 23:20:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:20:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-14 23:20:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-14 23:20:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-14 23:20:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:20:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-14 23:20:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:20:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:20:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:20:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-14 23:20:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-14 23:20:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-14 23:20:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:20:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:20:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:20:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:20:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:20:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:20:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:20:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:20:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:20:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:20:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:20:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:20:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:20:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:20:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:20:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:20:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:20:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:20:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:20:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:20:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:20:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:20:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:20:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:20:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-14 23:20:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-14 23:20:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:20:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:20:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-14 23:20:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-14 23:20:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:20:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-14 23:20:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-14 23:20:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-14 23:20:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-14 23:20:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-14 23:20:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-14 23:20:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-14 23:20:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-14 23:20:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-14 23:20:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-14 23:20:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-14 23:20:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:20:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-14 23:20:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-14 23:20:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-14 23:20:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:20:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-14 23:20:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-14 23:20:37,211 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-14 23:20:37,218 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-14 23:20:37,218 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-14 23:20:37,218 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-14 23:20:37,219 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-14 23:20:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-14 23:20:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-14 23:20:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-14 23:20:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-14 23:20:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-14 23:20:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-14 23:20:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-14 23:20:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-14 23:20:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-14 23:20:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-14 23:20:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-14 23:20:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-14 23:20:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-14 23:20:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-14 23:20:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-14 23:20:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-14 23:20:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-14 23:20:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-14 23:20:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-14 23:20:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-14 23:20:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-14 23:20:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-14 23:20:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-14 23:20:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-14 23:20:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-14 23:20:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-14 23:20:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-14 23:20:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-14 23:20:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-14 23:20:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-14 23:20:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-14 23:20:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-14 23:20:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-14 23:20:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-14 23:20:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-14 23:20:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-14 23:20:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-14 23:20:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:20:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-14 23:20:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-14 23:20:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-14 23:20:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-14 23:20:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-14 23:20:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-14 23:20:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-14 23:20:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-14 23:20:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-14 23:20:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:20:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-14 23:20:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:20:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:20:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:20:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:20:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:20:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:20:40,112 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:20:40,113 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-14 23:20:40,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:40 BoogieIcfgContainer [2019-10-14 23:20:40,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:20:40,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:20:40,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:20:40,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:20:40,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:20:35" (1/3) ... [2019-10-14 23:20:40,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112e6db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:40, skipping insertion in model container [2019-10-14 23:20:40,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:36" (2/3) ... [2019-10-14 23:20:40,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112e6db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:40, skipping insertion in model container [2019-10-14 23:20:40,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:40" (3/3) ... [2019-10-14 23:20:40,126 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_productSimulator.cil.c [2019-10-14 23:20:40,138 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:20:40,214 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:20:40,226 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:20:40,259 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:20:40,260 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:20:40,260 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:20:40,260 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:20:40,260 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:20:40,260 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:20:40,260 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:20:40,260 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:20:40,299 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states. [2019-10-14 23:20:40,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-14 23:20:40,319 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:40,320 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:40,323 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:40,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:40,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1052026056, now seen corresponding path program 1 times [2019-10-14 23:20:40,339 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:40,340 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766880017] [2019-10-14 23:20:40,340 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:40,341 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:40,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:42,212 WARN L191 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 421 [2019-10-14 23:20:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:42,786 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:42,998 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,523 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-10-14 23:20:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-14 23:20:43,801 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766880017] [2019-10-14 23:20:43,804 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301249595] [2019-10-14 23:20:43,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:44,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 3578 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-14 23:20:44,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-14 23:20:44,607 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:44,607 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [16] total 16 [2019-10-14 23:20:44,607 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895026524] [2019-10-14 23:20:44,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:20:44,614 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:44,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:20:44,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:20:44,632 INFO L87 Difference]: Start difference. First operand 927 states. Second operand 2 states. [2019-10-14 23:20:44,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:44,750 INFO L93 Difference]: Finished difference Result 798 states and 1232 transitions. [2019-10-14 23:20:44,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:20:44,751 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 150 [2019-10-14 23:20:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:44,803 INFO L225 Difference]: With dead ends: 798 [2019-10-14 23:20:44,803 INFO L226 Difference]: Without dead ends: 761 [2019-10-14 23:20:44,819 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:20:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2019-10-14 23:20:44,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2019-10-14 23:20:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2019-10-14 23:20:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1177 transitions. [2019-10-14 23:20:45,000 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1177 transitions. Word has length 150 [2019-10-14 23:20:45,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:45,011 INFO L462 AbstractCegarLoop]: Abstraction has 761 states and 1177 transitions. [2019-10-14 23:20:45,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:20:45,012 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1177 transitions. [2019-10-14 23:20:45,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-14 23:20:45,026 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:45,026 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:45,235 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:45,235 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:45,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:45,236 INFO L82 PathProgramCache]: Analyzing trace with hash 781539179, now seen corresponding path program 1 times [2019-10-14 23:20:45,236 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:45,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321313119] [2019-10-14 23:20:45,236 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:45,237 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:45,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:46,488 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 421 [2019-10-14 23:20:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:46,945 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,165 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,649 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-10-14 23:20:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-14 23:20:47,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321313119] [2019-10-14 23:20:47,782 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183860867] [2019-10-14 23:20:47,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:48,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 3581 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:48,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-14 23:20:48,534 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:48,534 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-10-14 23:20:48,535 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480620029] [2019-10-14 23:20:48,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:48,536 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:48,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:48,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:20:48,537 INFO L87 Difference]: Start difference. First operand 761 states and 1177 transitions. Second operand 4 states. [2019-10-14 23:20:48,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:48,732 INFO L93 Difference]: Finished difference Result 1473 states and 2297 transitions. [2019-10-14 23:20:48,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:48,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2019-10-14 23:20:48,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:48,744 INFO L225 Difference]: With dead ends: 1473 [2019-10-14 23:20:48,745 INFO L226 Difference]: Without dead ends: 761 [2019-10-14 23:20:48,754 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:20:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2019-10-14 23:20:48,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2019-10-14 23:20:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2019-10-14 23:20:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1176 transitions. [2019-10-14 23:20:48,811 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1176 transitions. Word has length 152 [2019-10-14 23:20:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:48,811 INFO L462 AbstractCegarLoop]: Abstraction has 761 states and 1176 transitions. [2019-10-14 23:20:48,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:48,812 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1176 transitions. [2019-10-14 23:20:48,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-14 23:20:48,817 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:48,817 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:49,023 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:49,024 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:49,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:49,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1779559927, now seen corresponding path program 1 times [2019-10-14 23:20:49,025 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:49,025 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218049021] [2019-10-14 23:20:49,025 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:49,025 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:49,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,085 WARN L191 SmtUtils]: Spent 909.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-14 23:20:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,521 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,704 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:51,096 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-10-14 23:20:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-14 23:20:51,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218049021] [2019-10-14 23:20:51,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473537061] [2019-10-14 23:20:51,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:51,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 3583 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:51,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-14 23:20:51,947 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:51,947 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-10-14 23:20:51,947 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469755850] [2019-10-14 23:20:51,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:51,948 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:51,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:51,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:20:51,949 INFO L87 Difference]: Start difference. First operand 761 states and 1176 transitions. Second operand 4 states. [2019-10-14 23:20:52,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:52,036 INFO L93 Difference]: Finished difference Result 1473 states and 2295 transitions. [2019-10-14 23:20:52,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:52,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2019-10-14 23:20:52,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:52,044 INFO L225 Difference]: With dead ends: 1473 [2019-10-14 23:20:52,044 INFO L226 Difference]: Without dead ends: 761 [2019-10-14 23:20:52,048 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:20:52,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2019-10-14 23:20:52,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2019-10-14 23:20:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2019-10-14 23:20:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1175 transitions. [2019-10-14 23:20:52,077 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1175 transitions. Word has length 154 [2019-10-14 23:20:52,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:52,078 INFO L462 AbstractCegarLoop]: Abstraction has 761 states and 1175 transitions. [2019-10-14 23:20:52,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:52,078 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1175 transitions. [2019-10-14 23:20:52,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-14 23:20:52,081 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:52,081 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:52,289 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:52,290 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:52,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:52,290 INFO L82 PathProgramCache]: Analyzing trace with hash 939633715, now seen corresponding path program 1 times [2019-10-14 23:20:52,290 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:52,290 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667522106] [2019-10-14 23:20:52,291 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:52,291 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:52,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:53,275 WARN L191 SmtUtils]: Spent 871.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-14 23:20:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:53,739 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:53,994 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,366 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-10-14 23:20:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-14 23:20:54,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667522106] [2019-10-14 23:20:54,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963368430] [2019-10-14 23:20:54,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:55,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 3585 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:55,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:55,176 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-14 23:20:55,177 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:55,177 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-10-14 23:20:55,177 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313670545] [2019-10-14 23:20:55,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:55,179 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:55,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:55,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:20:55,181 INFO L87 Difference]: Start difference. First operand 761 states and 1175 transitions. Second operand 4 states. [2019-10-14 23:20:55,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:55,286 INFO L93 Difference]: Finished difference Result 1480 states and 2302 transitions. [2019-10-14 23:20:55,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:55,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2019-10-14 23:20:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:55,293 INFO L225 Difference]: With dead ends: 1480 [2019-10-14 23:20:55,293 INFO L226 Difference]: Without dead ends: 770 [2019-10-14 23:20:55,297 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:20:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2019-10-14 23:20:55,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2019-10-14 23:20:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2019-10-14 23:20:55,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1187 transitions. [2019-10-14 23:20:55,323 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1187 transitions. Word has length 156 [2019-10-14 23:20:55,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:55,324 INFO L462 AbstractCegarLoop]: Abstraction has 770 states and 1187 transitions. [2019-10-14 23:20:55,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:55,324 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1187 transitions. [2019-10-14 23:20:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-14 23:20:55,327 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:55,327 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:55,539 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:55,540 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:55,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:55,540 INFO L82 PathProgramCache]: Analyzing trace with hash -451740952, now seen corresponding path program 1 times [2019-10-14 23:20:55,541 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:55,541 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680117748] [2019-10-14 23:20:55,542 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:55,542 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:55,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:56,631 WARN L191 SmtUtils]: Spent 986.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-14 23:20:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,060 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:20:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,289 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,826 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-10-14 23:20:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-14 23:20:58,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680117748] [2019-10-14 23:20:58,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757813359] [2019-10-14 23:20:58,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:58,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 3586 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:58,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:58,747 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-14 23:20:58,747 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:58,748 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-10-14 23:20:58,748 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706729471] [2019-10-14 23:20:58,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:58,749 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:58,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:58,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:20:58,750 INFO L87 Difference]: Start difference. First operand 770 states and 1187 transitions. Second operand 4 states. [2019-10-14 23:20:58,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:58,871 INFO L93 Difference]: Finished difference Result 1482 states and 2303 transitions. [2019-10-14 23:20:58,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:58,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2019-10-14 23:20:58,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:58,889 INFO L225 Difference]: With dead ends: 1482 [2019-10-14 23:20:58,889 INFO L226 Difference]: Without dead ends: 770 [2019-10-14 23:20:58,895 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:20:58,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2019-10-14 23:20:58,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2019-10-14 23:20:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2019-10-14 23:20:58,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1186 transitions. [2019-10-14 23:20:58,938 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1186 transitions. Word has length 157 [2019-10-14 23:20:58,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:58,939 INFO L462 AbstractCegarLoop]: Abstraction has 770 states and 1186 transitions. [2019-10-14 23:20:58,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:58,939 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1186 transitions. [2019-10-14 23:20:58,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-14 23:20:58,942 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:58,942 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:59,150 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:59,150 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:59,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:59,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1893266647, now seen corresponding path program 1 times [2019-10-14 23:20:59,151 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:59,151 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512346037] [2019-10-14 23:20:59,152 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:59,152 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:59,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,344 WARN L191 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 421 [2019-10-14 23:21:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,697 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:21:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,888 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:21:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:01,328 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-10-14 23:21:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-14 23:21:01,488 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512346037] [2019-10-14 23:21:01,488 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707798718] [2019-10-14 23:21:01,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:21:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:02,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 3587 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:21:02,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:21:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-14 23:21:02,171 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:21:02,171 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-10-14 23:21:02,171 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432166967] [2019-10-14 23:21:02,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:21:02,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:21:02,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:21:02,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:21:02,173 INFO L87 Difference]: Start difference. First operand 770 states and 1186 transitions. Second operand 4 states. [2019-10-14 23:21:02,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:21:02,267 INFO L93 Difference]: Finished difference Result 1482 states and 2302 transitions. [2019-10-14 23:21:02,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:21:02,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2019-10-14 23:21:02,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:21:02,274 INFO L225 Difference]: With dead ends: 1482 [2019-10-14 23:21:02,274 INFO L226 Difference]: Without dead ends: 770 [2019-10-14 23:21:02,278 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:21:02,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2019-10-14 23:21:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2019-10-14 23:21:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2019-10-14 23:21:02,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1185 transitions. [2019-10-14 23:21:02,303 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1185 transitions. Word has length 158 [2019-10-14 23:21:02,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:21:02,304 INFO L462 AbstractCegarLoop]: Abstraction has 770 states and 1185 transitions. [2019-10-14 23:21:02,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:21:02,304 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1185 transitions. [2019-10-14 23:21:02,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-14 23:21:02,307 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:21:02,307 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:21:02,517 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:21:02,517 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:21:02,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:21:02,517 INFO L82 PathProgramCache]: Analyzing trace with hash -192959796, now seen corresponding path program 1 times [2019-10-14 23:21:02,518 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:21:02,518 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870045714] [2019-10-14 23:21:02,518 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:21:02,518 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:21:02,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:21:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:03,569 WARN L191 SmtUtils]: Spent 962.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-14 23:21:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:03,945 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:21:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,115 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:21:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,490 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-10-14 23:21:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-14 23:21:04,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870045714] [2019-10-14 23:21:04,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046439511] [2019-10-14 23:21:04,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:21:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:05,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 3588 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:21:05,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:21:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-14 23:21:05,365 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:21:05,366 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2019-10-14 23:21:05,366 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730103787] [2019-10-14 23:21:05,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:21:05,367 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:21:05,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:21:05,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:21:05,367 INFO L87 Difference]: Start difference. First operand 770 states and 1185 transitions. Second operand 7 states. [2019-10-14 23:21:05,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:21:05,551 INFO L93 Difference]: Finished difference Result 1489 states and 2311 transitions. [2019-10-14 23:21:05,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:21:05,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2019-10-14 23:21:05,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:21:05,558 INFO L225 Difference]: With dead ends: 1489 [2019-10-14 23:21:05,558 INFO L226 Difference]: Without dead ends: 781 [2019-10-14 23:21:05,563 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:21:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2019-10-14 23:21:05,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 777. [2019-10-14 23:21:05,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2019-10-14 23:21:05,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1195 transitions. [2019-10-14 23:21:05,610 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1195 transitions. Word has length 159 [2019-10-14 23:21:05,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:21:05,611 INFO L462 AbstractCegarLoop]: Abstraction has 777 states and 1195 transitions. [2019-10-14 23:21:05,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:21:05,611 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1195 transitions. [2019-10-14 23:21:05,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-14 23:21:05,614 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:21:05,614 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:21:05,822 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:21:05,822 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:21:05,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:21:05,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2103645234, now seen corresponding path program 1 times [2019-10-14 23:21:05,823 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:21:05,824 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198055136] [2019-10-14 23:21:05,824 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:21:05,824 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:21:05,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:21:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:06,858 WARN L191 SmtUtils]: Spent 940.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-14 23:21:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,271 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:21:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,445 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:21:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,867 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-10-14 23:21:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-14 23:21:08,036 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198055136] [2019-10-14 23:21:08,036 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395966094] [2019-10-14 23:21:08,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:21:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:21:08,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 3589 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:21:08,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:21:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-14 23:21:08,716 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:21:08,716 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19] total 21 [2019-10-14 23:21:08,716 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519782404] [2019-10-14 23:21:08,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:21:08,717 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:21:08,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:21:08,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:21:08,718 INFO L87 Difference]: Start difference. First operand 777 states and 1195 transitions. Second operand 4 states. [2019-10-14 23:21:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:21:08,917 INFO L93 Difference]: Finished difference Result 1494 states and 2322 transitions. [2019-10-14 23:21:08,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:21:08,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2019-10-14 23:21:08,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:21:08,926 INFO L225 Difference]: With dead ends: 1494 [2019-10-14 23:21:08,926 INFO L226 Difference]: Without dead ends: 777 [2019-10-14 23:21:08,933 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:21:08,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2019-10-14 23:21:08,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 777. [2019-10-14 23:21:08,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2019-10-14 23:21:08,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1190 transitions. [2019-10-14 23:21:08,989 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1190 transitions. Word has length 160 [2019-10-14 23:21:08,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:21:08,990 INFO L462 AbstractCegarLoop]: Abstraction has 777 states and 1190 transitions. [2019-10-14 23:21:08,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:21:08,990 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1190 transitions. [2019-10-14 23:21:08,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-14 23:21:08,994 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:21:08,994 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:21:09,206 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:21:09,206 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:21:09,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:21:09,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1087779282, now seen corresponding path program 1 times [2019-10-14 23:21:09,207 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:21:09,207 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280294408] [2019-10-14 23:21:09,208 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:21:09,208 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:21:09,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:21:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat