./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f11976cf57fe8d65e71fe2317840ceb817472b70b756607274947c31f43df4d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 02:42:45,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 02:42:46,020 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 02:42:46,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 02:42:46,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 02:42:46,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 02:42:46,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 02:42:46,056 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 02:42:46,056 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 02:42:46,058 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 02:42:46,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 02:42:46,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 02:42:46,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 02:42:46,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 02:42:46,060 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 02:42:46,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 02:42:46,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 02:42:46,061 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 02:42:46,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 02:42:46,062 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 02:42:46,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 02:42:46,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 02:42:46,065 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 02:42:46,065 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 02:42:46,065 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 02:42:46,065 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 02:42:46,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 02:42:46,066 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 02:42:46,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 02:42:46,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 02:42:46,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 02:42:46,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 02:42:46,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 02:42:46,067 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 02:42:46,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 02:42:46,068 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 02:42:46,068 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 02:42:46,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 02:42:46,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 02:42:46,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 02:42:46,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 02:42:46,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 02:42:46,071 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f11976cf57fe8d65e71fe2317840ceb817472b70b756607274947c31f43df4d [2024-10-14 02:42:46,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 02:42:46,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 02:42:46,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 02:42:46,357 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 02:42:46,358 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 02:42:46,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c [2024-10-14 02:42:47,807 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 02:42:48,146 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 02:42:48,147 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c [2024-10-14 02:42:48,176 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c86d63473/7ab08c05cf704a8c9ffcc77db2dd7c9d/FLAG6f64b1399 [2024-10-14 02:42:48,387 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c86d63473/7ab08c05cf704a8c9ffcc77db2dd7c9d [2024-10-14 02:42:48,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 02:42:48,392 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 02:42:48,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 02:42:48,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 02:42:48,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 02:42:48,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:42:48" (1/1) ... [2024-10-14 02:42:48,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd1494c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:48, skipping insertion in model container [2024-10-14 02:42:48,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:42:48" (1/1) ... [2024-10-14 02:42:48,466 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 02:42:48,891 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c[45414,45427] [2024-10-14 02:42:48,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 02:42:48,981 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 02:42:48,991 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2024-10-14 02:42:48,993 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1639] [2024-10-14 02:42:48,993 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2005] [2024-10-14 02:42:48,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2021] [2024-10-14 02:42:48,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2059] [2024-10-14 02:42:48,995 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2068] [2024-10-14 02:42:48,995 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2162] [2024-10-14 02:42:48,995 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2828] [2024-10-14 02:42:48,996 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3180] [2024-10-14 02:42:48,996 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3361] [2024-10-14 02:42:49,100 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c[45414,45427] [2024-10-14 02:42:49,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 02:42:49,209 INFO L204 MainTranslator]: Completed translation [2024-10-14 02:42:49,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:49 WrapperNode [2024-10-14 02:42:49,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 02:42:49,211 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 02:42:49,211 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 02:42:49,211 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 02:42:49,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:49" (1/1) ... [2024-10-14 02:42:49,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:49" (1/1) ... [2024-10-14 02:42:49,302 INFO L138 Inliner]: procedures = 96, calls = 347, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 1122 [2024-10-14 02:42:49,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 02:42:49,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 02:42:49,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 02:42:49,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 02:42:49,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:49" (1/1) ... [2024-10-14 02:42:49,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:49" (1/1) ... [2024-10-14 02:42:49,326 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:49" (1/1) ... [2024-10-14 02:42:49,364 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-10-14 02:42:49,364 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:49" (1/1) ... [2024-10-14 02:42:49,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:49" (1/1) ... [2024-10-14 02:42:49,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:49" (1/1) ... [2024-10-14 02:42:49,392 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:49" (1/1) ... [2024-10-14 02:42:49,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:49" (1/1) ... [2024-10-14 02:42:49,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:49" (1/1) ... [2024-10-14 02:42:49,409 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 02:42:49,410 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 02:42:49,410 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 02:42:49,410 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 02:42:49,411 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:49" (1/1) ... [2024-10-14 02:42:49,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 02:42:49,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:42:49,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 02:42:49,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 02:42:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-10-14 02:42:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-10-14 02:42:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 02:42:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-10-14 02:42:49,524 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-10-14 02:42:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-10-14 02:42:49,524 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-10-14 02:42:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-10-14 02:42:49,525 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-10-14 02:42:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-10-14 02:42:49,525 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-10-14 02:42:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-10-14 02:42:49,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-10-14 02:42:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-10-14 02:42:49,526 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-10-14 02:42:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-10-14 02:42:49,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-10-14 02:42:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-10-14 02:42:49,527 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-10-14 02:42:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-10-14 02:42:49,527 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-10-14 02:42:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-10-14 02:42:49,527 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-10-14 02:42:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-10-14 02:42:49,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-10-14 02:42:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-10-14 02:42:49,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-10-14 02:42:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-10-14 02:42:49,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-10-14 02:42:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-10-14 02:42:49,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-10-14 02:42:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-10-14 02:42:49,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-10-14 02:42:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-10-14 02:42:49,531 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-10-14 02:42:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-10-14 02:42:49,531 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-10-14 02:42:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-10-14 02:42:49,531 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-10-14 02:42:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-10-14 02:42:49,531 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-10-14 02:42:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-10-14 02:42:49,531 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-10-14 02:42:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 02:42:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 02:42:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 02:42:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 02:42:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 02:42:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 02:42:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-14 02:42:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-14 02:42:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-14 02:42:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-14 02:42:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-14 02:42:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-14 02:42:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-14 02:42:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-14 02:42:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-10-14 02:42:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-10-14 02:42:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-10-14 02:42:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-10-14 02:42:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-10-14 02:42:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-10-14 02:42:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-10-14 02:42:49,533 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-10-14 02:42:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-10-14 02:42:49,533 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-10-14 02:42:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-10-14 02:42:49,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-10-14 02:42:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 02:42:49,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 02:42:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-10-14 02:42:49,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-10-14 02:42:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-10-14 02:42:49,534 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-10-14 02:42:49,728 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 02:42:49,732 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 02:42:50,969 INFO L? ?]: Removed 451 outVars from TransFormulas that were not future-live. [2024-10-14 02:42:50,969 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 02:42:51,082 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 02:42:51,083 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 02:42:51,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:42:51 BoogieIcfgContainer [2024-10-14 02:42:51,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 02:42:51,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 02:42:51,090 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 02:42:51,093 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 02:42:51,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:42:48" (1/3) ... [2024-10-14 02:42:51,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b279ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:42:51, skipping insertion in model container [2024-10-14 02:42:51,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:49" (2/3) ... [2024-10-14 02:42:51,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b279ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:42:51, skipping insertion in model container [2024-10-14 02:42:51,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:42:51" (3/3) ... [2024-10-14 02:42:51,097 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product20.cil.c [2024-10-14 02:42:51,123 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 02:42:51,123 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 02:42:51,209 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 02:42:51,216 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e363e50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 02:42:51,217 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 02:42:51,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 554 states, 424 states have (on average 1.7169811320754718) internal successors, (728), 447 states have internal predecessors, (728), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) [2024-10-14 02:42:51,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-14 02:42:51,239 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:42:51,240 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:42:51,241 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:42:51,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:42:51,248 INFO L85 PathProgramCache]: Analyzing trace with hash 125562786, now seen corresponding path program 1 times [2024-10-14 02:42:51,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:42:51,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844286879] [2024-10-14 02:42:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:42:51,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:42:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:51,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:42:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:52,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:42:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:52,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:42:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:52,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-14 02:42:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:52,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:42:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:52,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:42:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:52,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-14 02:42:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:52,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:42:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:52,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:42:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:52,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:42:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-14 02:42:52,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:42:52,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844286879] [2024-10-14 02:42:52,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844286879] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:42:52,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:42:52,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 02:42:52,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133983640] [2024-10-14 02:42:52,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:42:52,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 02:42:52,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:42:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 02:42:52,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 02:42:52,620 INFO L87 Difference]: Start difference. First operand has 554 states, 424 states have (on average 1.7169811320754718) internal successors, (728), 447 states have internal predecessors, (728), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:42:57,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:42:57,998 INFO L93 Difference]: Finished difference Result 1264 states and 2154 transitions. [2024-10-14 02:42:58,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 02:42:58,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2024-10-14 02:42:58,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:42:58,029 INFO L225 Difference]: With dead ends: 1264 [2024-10-14 02:42:58,029 INFO L226 Difference]: Without dead ends: 710 [2024-10-14 02:42:58,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:42:58,041 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 662 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 3328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-10-14 02:42:58,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 678 Invalid, 3328 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [130 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-10-14 02:42:58,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-10-14 02:42:58,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 550. [2024-10-14 02:42:58,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 422 states have (on average 1.7061611374407584) internal successors, (720), 443 states have internal predecessors, (720), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-14 02:42:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 919 transitions. [2024-10-14 02:42:58,228 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 919 transitions. Word has length 72 [2024-10-14 02:42:58,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:42:58,228 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 919 transitions. [2024-10-14 02:42:58,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:42:58,229 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 919 transitions. [2024-10-14 02:42:58,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-14 02:42:58,232 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:42:58,232 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:42:58,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 02:42:58,233 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:42:58,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:42:58,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1813588004, now seen corresponding path program 1 times [2024-10-14 02:42:58,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:42:58,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306916827] [2024-10-14 02:42:58,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:42:58,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:42:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:58,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:42:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:58,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:42:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:58,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:42:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:58,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-14 02:42:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:58,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:42:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:58,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:42:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:58,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 02:42:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:58,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:42:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:58,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:42:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:58,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:42:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:42:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-14 02:42:58,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:42:58,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306916827] [2024-10-14 02:42:58,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306916827] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:42:58,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:42:58,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 02:42:58,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771616709] [2024-10-14 02:42:58,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:42:58,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 02:42:58,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:42:58,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 02:42:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 02:42:58,966 INFO L87 Difference]: Start difference. First operand 550 states and 919 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:03,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:03,751 INFO L93 Difference]: Finished difference Result 1257 states and 2126 transitions. [2024-10-14 02:43:03,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 02:43:03,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 75 [2024-10-14 02:43:03,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:03,758 INFO L225 Difference]: With dead ends: 1257 [2024-10-14 02:43:03,758 INFO L226 Difference]: Without dead ends: 710 [2024-10-14 02:43:03,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:43:03,762 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 659 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:03,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 670 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 3177 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-10-14 02:43:03,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-10-14 02:43:03,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 550. [2024-10-14 02:43:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 422 states have (on average 1.7037914691943128) internal successors, (719), 443 states have internal predecessors, (719), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-14 02:43:03,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 918 transitions. [2024-10-14 02:43:03,865 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 918 transitions. Word has length 75 [2024-10-14 02:43:03,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:03,865 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 918 transitions. [2024-10-14 02:43:03,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:03,866 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 918 transitions. [2024-10-14 02:43:03,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-14 02:43:03,871 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:03,871 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:03,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 02:43:03,872 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:03,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash 368781364, now seen corresponding path program 1 times [2024-10-14 02:43:03,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:03,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30309704] [2024-10-14 02:43:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:03,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:04,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:04,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:04,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:43:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:04,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 02:43:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:04,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:04,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:43:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:04,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-14 02:43:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:04,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:04,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:04,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-14 02:43:04,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:04,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30309704] [2024-10-14 02:43:04,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30309704] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:04,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160345116] [2024-10-14 02:43:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:04,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:04,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:04,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:04,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 02:43:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:04,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 02:43:04,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 02:43:04,924 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:04,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160345116] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:04,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:04,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-14 02:43:04,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765529725] [2024-10-14 02:43:04,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:04,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 02:43:04,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:04,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 02:43:04,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:43:04,927 INFO L87 Difference]: Start difference. First operand 550 states and 918 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:05,123 INFO L93 Difference]: Finished difference Result 1104 states and 1843 transitions. [2024-10-14 02:43:05,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:43:05,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 77 [2024-10-14 02:43:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:05,128 INFO L225 Difference]: With dead ends: 1104 [2024-10-14 02:43:05,129 INFO L226 Difference]: Without dead ends: 559 [2024-10-14 02:43:05,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-14 02:43:05,132 INFO L432 NwaCegarLoop]: 893 mSDtfsCounter, 13 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:05,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2673 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:43:05,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-10-14 02:43:05,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2024-10-14 02:43:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 430 states have (on average 1.7) internal successors, (731), 451 states have internal predecessors, (731), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-14 02:43:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 930 transitions. [2024-10-14 02:43:05,225 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 930 transitions. Word has length 77 [2024-10-14 02:43:05,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:05,225 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 930 transitions. [2024-10-14 02:43:05,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:05,226 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 930 transitions. [2024-10-14 02:43:05,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-14 02:43:05,228 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:05,228 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:05,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 02:43:05,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:05,430 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:05,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:05,430 INFO L85 PathProgramCache]: Analyzing trace with hash -46088001, now seen corresponding path program 1 times [2024-10-14 02:43:05,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:05,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987772399] [2024-10-14 02:43:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:05,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:05,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:05,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:05,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 02:43:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:05,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-14 02:43:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:05,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:05,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:43:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:06,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-14 02:43:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:06,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:06,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:06,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-14 02:43:06,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:06,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987772399] [2024-10-14 02:43:06,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987772399] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:06,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428056985] [2024-10-14 02:43:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:06,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:06,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:06,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:06,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 02:43:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:06,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 02:43:06,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 02:43:06,602 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:06,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428056985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:06,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:06,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-14 02:43:06,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388310894] [2024-10-14 02:43:06,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:06,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 02:43:06,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:06,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 02:43:06,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:43:06,605 INFO L87 Difference]: Start difference. First operand 559 states and 930 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:06,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:06,772 INFO L93 Difference]: Finished difference Result 1106 states and 1844 transitions. [2024-10-14 02:43:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:43:06,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2024-10-14 02:43:06,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:06,777 INFO L225 Difference]: With dead ends: 1106 [2024-10-14 02:43:06,777 INFO L226 Difference]: Without dead ends: 559 [2024-10-14 02:43:06,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-14 02:43:06,781 INFO L432 NwaCegarLoop]: 893 mSDtfsCounter, 11 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:06,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2673 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:43:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-10-14 02:43:06,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2024-10-14 02:43:06,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 430 states have (on average 1.697674418604651) internal successors, (730), 451 states have internal predecessors, (730), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-14 02:43:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 929 transitions. [2024-10-14 02:43:06,879 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 929 transitions. Word has length 78 [2024-10-14 02:43:06,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:06,879 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 929 transitions. [2024-10-14 02:43:06,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:06,880 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 929 transitions. [2024-10-14 02:43:06,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-14 02:43:06,882 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:06,882 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:06,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 02:43:07,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-14 02:43:07,083 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:07,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1007388776, now seen corresponding path program 1 times [2024-10-14 02:43:07,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:07,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454767570] [2024-10-14 02:43:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:07,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:07,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:07,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:07,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-14 02:43:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:07,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 02:43:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:07,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:07,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:43:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:07,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-14 02:43:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:07,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:07,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:07,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-14 02:43:07,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:07,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454767570] [2024-10-14 02:43:07,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454767570] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:07,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035254790] [2024-10-14 02:43:07,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:07,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:07,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:07,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:07,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 02:43:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:08,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 02:43:08,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:08,058 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 02:43:08,058 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:08,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035254790] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:08,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:08,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-14 02:43:08,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798416399] [2024-10-14 02:43:08,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:08,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 02:43:08,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:08,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 02:43:08,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:43:08,061 INFO L87 Difference]: Start difference. First operand 559 states and 929 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:08,244 INFO L93 Difference]: Finished difference Result 1106 states and 1843 transitions. [2024-10-14 02:43:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:43:08,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2024-10-14 02:43:08,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:08,249 INFO L225 Difference]: With dead ends: 1106 [2024-10-14 02:43:08,249 INFO L226 Difference]: Without dead ends: 559 [2024-10-14 02:43:08,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-14 02:43:08,253 INFO L432 NwaCegarLoop]: 893 mSDtfsCounter, 10 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:08,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2673 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:43:08,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-10-14 02:43:08,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2024-10-14 02:43:08,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 430 states have (on average 1.6953488372093024) internal successors, (729), 451 states have internal predecessors, (729), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-14 02:43:08,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 928 transitions. [2024-10-14 02:43:08,339 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 928 transitions. Word has length 79 [2024-10-14 02:43:08,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:08,339 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 928 transitions. [2024-10-14 02:43:08,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:08,340 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 928 transitions. [2024-10-14 02:43:08,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-14 02:43:08,342 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:08,342 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:08,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 02:43:08,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:08,544 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:08,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:08,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1728194077, now seen corresponding path program 1 times [2024-10-14 02:43:08,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:08,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562017078] [2024-10-14 02:43:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:08,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:08,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:08,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:08,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:08,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-14 02:43:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:08,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:08,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:43:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:09,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-14 02:43:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:09,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:09,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:09,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:09,262 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 02:43:09,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:09,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562017078] [2024-10-14 02:43:09,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562017078] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:09,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236925126] [2024-10-14 02:43:09,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:09,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:09,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:09,266 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:09,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 02:43:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:09,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 02:43:09,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:43:09,622 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:09,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236925126] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:09,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:09,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-14 02:43:09,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126920714] [2024-10-14 02:43:09,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:09,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 02:43:09,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:09,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 02:43:09,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:43:09,626 INFO L87 Difference]: Start difference. First operand 559 states and 928 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:09,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:09,875 INFO L93 Difference]: Finished difference Result 1130 states and 1888 transitions. [2024-10-14 02:43:09,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 02:43:09,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2024-10-14 02:43:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:09,880 INFO L225 Difference]: With dead ends: 1130 [2024-10-14 02:43:09,880 INFO L226 Difference]: Without dead ends: 573 [2024-10-14 02:43:09,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:43:09,884 INFO L432 NwaCegarLoop]: 866 mSDtfsCounter, 75 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:09,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2560 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:43:09,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-10-14 02:43:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 559. [2024-10-14 02:43:09,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 430 states have (on average 1.6837209302325582) internal successors, (724), 451 states have internal predecessors, (724), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-14 02:43:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 923 transitions. [2024-10-14 02:43:09,972 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 923 transitions. Word has length 80 [2024-10-14 02:43:09,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:09,972 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 923 transitions. [2024-10-14 02:43:09,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:09,973 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 923 transitions. [2024-10-14 02:43:09,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-14 02:43:09,974 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:09,974 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:09,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 02:43:10,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:10,175 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:10,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:10,176 INFO L85 PathProgramCache]: Analyzing trace with hash -458702843, now seen corresponding path program 1 times [2024-10-14 02:43:10,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:10,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457697592] [2024-10-14 02:43:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:10,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:10,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:10,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:10,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:10,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-14 02:43:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:10,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:10,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:43:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:10,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-14 02:43:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:10,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:10,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:10,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:10,947 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 02:43:10,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457697592] [2024-10-14 02:43:10,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457697592] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:10,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619381613] [2024-10-14 02:43:10,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:10,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:10,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:10,950 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:10,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 02:43:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:11,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 02:43:11,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:43:11,279 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:11,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619381613] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:11,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:11,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-14 02:43:11,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712463608] [2024-10-14 02:43:11,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:11,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 02:43:11,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:11,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 02:43:11,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:43:11,281 INFO L87 Difference]: Start difference. First operand 559 states and 923 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:11,480 INFO L93 Difference]: Finished difference Result 1130 states and 1878 transitions. [2024-10-14 02:43:11,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 02:43:11,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 82 [2024-10-14 02:43:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:11,485 INFO L225 Difference]: With dead ends: 1130 [2024-10-14 02:43:11,485 INFO L226 Difference]: Without dead ends: 573 [2024-10-14 02:43:11,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:43:11,488 INFO L432 NwaCegarLoop]: 866 mSDtfsCounter, 74 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:11,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 2560 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:43:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-10-14 02:43:11,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 559. [2024-10-14 02:43:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 430 states have (on average 1.672093023255814) internal successors, (719), 451 states have internal predecessors, (719), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-14 02:43:11,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 918 transitions. [2024-10-14 02:43:11,574 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 918 transitions. Word has length 82 [2024-10-14 02:43:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:11,574 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 918 transitions. [2024-10-14 02:43:11,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 918 transitions. [2024-10-14 02:43:11,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-14 02:43:11,576 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:11,576 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:11,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 02:43:11,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:11,777 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:11,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:11,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1714432409, now seen corresponding path program 1 times [2024-10-14 02:43:11,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:11,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540302951] [2024-10-14 02:43:11,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:11,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:12,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:12,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:12,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:12,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 02:43:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:12,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:12,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:43:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:12,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-14 02:43:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:12,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:12,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:12,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 02:43:12,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:12,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540302951] [2024-10-14 02:43:12,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540302951] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:12,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786254907] [2024-10-14 02:43:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:12,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:12,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:12,394 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:12,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 02:43:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:12,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 02:43:12,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:43:12,739 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:12,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786254907] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:12,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:12,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-14 02:43:12,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80133743] [2024-10-14 02:43:12,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:12,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 02:43:12,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:12,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 02:43:12,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:43:12,741 INFO L87 Difference]: Start difference. First operand 559 states and 918 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:13,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:13,006 INFO L93 Difference]: Finished difference Result 1180 states and 1950 transitions. [2024-10-14 02:43:13,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:43:13,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2024-10-14 02:43:13,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:13,012 INFO L225 Difference]: With dead ends: 1180 [2024-10-14 02:43:13,012 INFO L226 Difference]: Without dead ends: 637 [2024-10-14 02:43:13,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-14 02:43:13,017 INFO L432 NwaCegarLoop]: 897 mSDtfsCounter, 129 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:13,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2589 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 02:43:13,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2024-10-14 02:43:13,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 609. [2024-10-14 02:43:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 479 states have (on average 1.6764091858037578) internal successors, (803), 500 states have internal predecessors, (803), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-14 02:43:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1002 transitions. [2024-10-14 02:43:13,132 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1002 transitions. Word has length 84 [2024-10-14 02:43:13,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:13,133 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 1002 transitions. [2024-10-14 02:43:13,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:13,133 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1002 transitions. [2024-10-14 02:43:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-14 02:43:13,135 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:13,135 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:13,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 02:43:13,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:13,336 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:13,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:13,336 INFO L85 PathProgramCache]: Analyzing trace with hash 72352856, now seen corresponding path program 1 times [2024-10-14 02:43:13,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:13,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788975028] [2024-10-14 02:43:13,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:13,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:13,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:13,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:13,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:13,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:13,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:13,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:43:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:13,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-14 02:43:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:14,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:14,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:14,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 02:43:14,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:14,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788975028] [2024-10-14 02:43:14,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788975028] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:14,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401138046] [2024-10-14 02:43:14,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:14,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:14,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:14,015 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:14,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 02:43:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:14,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 02:43:14,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:43:14,370 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:14,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401138046] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:14,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:14,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-14 02:43:14,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098968674] [2024-10-14 02:43:14,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:14,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 02:43:14,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:14,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 02:43:14,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:43:14,375 INFO L87 Difference]: Start difference. First operand 609 states and 1002 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:14,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:14,632 INFO L93 Difference]: Finished difference Result 1194 states and 1973 transitions. [2024-10-14 02:43:14,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:43:14,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2024-10-14 02:43:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:14,637 INFO L225 Difference]: With dead ends: 1194 [2024-10-14 02:43:14,637 INFO L226 Difference]: Without dead ends: 637 [2024-10-14 02:43:14,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-14 02:43:14,640 INFO L432 NwaCegarLoop]: 896 mSDtfsCounter, 123 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:14,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 2564 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 02:43:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2024-10-14 02:43:14,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 609. [2024-10-14 02:43:14,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 479 states have (on average 1.6659707724425887) internal successors, (798), 500 states have internal predecessors, (798), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-14 02:43:14,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 997 transitions. [2024-10-14 02:43:14,724 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 997 transitions. Word has length 85 [2024-10-14 02:43:14,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:14,724 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 997 transitions. [2024-10-14 02:43:14,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:14,725 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 997 transitions. [2024-10-14 02:43:14,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-14 02:43:14,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:14,726 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:14,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 02:43:14,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:14,927 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:14,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:14,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1224636503, now seen corresponding path program 1 times [2024-10-14 02:43:14,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:14,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334256634] [2024-10-14 02:43:14,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:14,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:15,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:15,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:15,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:15,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:15,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:15,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:43:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:15,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-14 02:43:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:15,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:15,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:15,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 02:43:15,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334256634] [2024-10-14 02:43:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334256634] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707193578] [2024-10-14 02:43:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:15,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:15,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:15,623 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:15,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 02:43:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:15,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 02:43:15,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:43:16,019 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:16,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707193578] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:16,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:16,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-10-14 02:43:16,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920264959] [2024-10-14 02:43:16,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:16,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 02:43:16,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:16,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 02:43:16,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-10-14 02:43:16,022 INFO L87 Difference]: Start difference. First operand 609 states and 997 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 02:43:16,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:16,309 INFO L93 Difference]: Finished difference Result 1188 states and 1954 transitions. [2024-10-14 02:43:16,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 02:43:16,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2024-10-14 02:43:16,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:16,315 INFO L225 Difference]: With dead ends: 1188 [2024-10-14 02:43:16,316 INFO L226 Difference]: Without dead ends: 645 [2024-10-14 02:43:16,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-10-14 02:43:16,319 INFO L432 NwaCegarLoop]: 874 mSDtfsCounter, 113 mSDsluCounter, 5156 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6030 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:16,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6030 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:43:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2024-10-14 02:43:16,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 627. [2024-10-14 02:43:16,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 494 states have (on average 1.665991902834008) internal successors, (823), 517 states have internal predecessors, (823), 103 states have call successors, (103), 28 states have call predecessors, (103), 29 states have return successors, (100), 95 states have call predecessors, (100), 98 states have call successors, (100) [2024-10-14 02:43:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1026 transitions. [2024-10-14 02:43:16,411 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1026 transitions. Word has length 85 [2024-10-14 02:43:16,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:16,411 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 1026 transitions. [2024-10-14 02:43:16,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 02:43:16,412 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1026 transitions. [2024-10-14 02:43:16,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-14 02:43:16,414 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:16,414 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:16,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-14 02:43:16,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-14 02:43:16,615 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:16,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:16,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1668247926, now seen corresponding path program 1 times [2024-10-14 02:43:16,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:16,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567595235] [2024-10-14 02:43:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:16,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:16,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:16,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:16,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:16,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:16,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:16,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:43:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:17,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-14 02:43:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:17,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:17,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:17,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:17,263 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 02:43:17,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:17,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567595235] [2024-10-14 02:43:17,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567595235] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:17,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009106811] [2024-10-14 02:43:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:17,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:17,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:17,268 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:17,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 02:43:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:17,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 02:43:17,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 02:43:17,711 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:17,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009106811] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:17,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:17,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-10-14 02:43:17,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999617880] [2024-10-14 02:43:17,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:17,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 02:43:17,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:17,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 02:43:17,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:43:17,713 INFO L87 Difference]: Start difference. First operand 627 states and 1026 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 02:43:17,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:17,915 INFO L93 Difference]: Finished difference Result 1126 states and 1854 transitions. [2024-10-14 02:43:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 02:43:17,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2024-10-14 02:43:17,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:17,923 INFO L225 Difference]: With dead ends: 1126 [2024-10-14 02:43:17,928 INFO L226 Difference]: Without dead ends: 649 [2024-10-14 02:43:17,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-10-14 02:43:17,936 INFO L432 NwaCegarLoop]: 887 mSDtfsCounter, 86 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:17,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5243 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:43:17,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-10-14 02:43:18,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 645. [2024-10-14 02:43:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 509 states have (on average 1.6660117878192535) internal successors, (848), 534 states have internal predecessors, (848), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-10-14 02:43:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1055 transitions. [2024-10-14 02:43:18,043 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1055 transitions. Word has length 85 [2024-10-14 02:43:18,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:18,044 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1055 transitions. [2024-10-14 02:43:18,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 02:43:18,044 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1055 transitions. [2024-10-14 02:43:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-14 02:43:18,046 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:18,046 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:18,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 02:43:18,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:18,247 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:18,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:18,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1260743686, now seen corresponding path program 1 times [2024-10-14 02:43:18,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:18,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900304812] [2024-10-14 02:43:18,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:18,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:18,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:18,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:18,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:18,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:18,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:18,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:43:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:18,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-14 02:43:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:18,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:18,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:18,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-14 02:43:18,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:18,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900304812] [2024-10-14 02:43:18,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900304812] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:18,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071819079] [2024-10-14 02:43:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:18,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:18,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:18,800 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:18,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 02:43:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:19,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 02:43:19,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 02:43:19,169 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:19,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071819079] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:19,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:19,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-14 02:43:19,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369880417] [2024-10-14 02:43:19,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:19,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 02:43:19,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:19,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 02:43:19,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-14 02:43:19,172 INFO L87 Difference]: Start difference. First operand 645 states and 1055 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 02:43:19,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:19,375 INFO L93 Difference]: Finished difference Result 1154 states and 1903 transitions. [2024-10-14 02:43:19,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 02:43:19,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2024-10-14 02:43:19,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:19,381 INFO L225 Difference]: With dead ends: 1154 [2024-10-14 02:43:19,381 INFO L226 Difference]: Without dead ends: 677 [2024-10-14 02:43:19,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-14 02:43:19,384 INFO L432 NwaCegarLoop]: 887 mSDtfsCounter, 95 mSDsluCounter, 4346 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5233 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:19,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5233 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:43:19,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-10-14 02:43:19,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 645. [2024-10-14 02:43:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 509 states have (on average 1.6660117878192535) internal successors, (848), 534 states have internal predecessors, (848), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-10-14 02:43:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1055 transitions. [2024-10-14 02:43:19,479 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1055 transitions. Word has length 86 [2024-10-14 02:43:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:19,479 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1055 transitions. [2024-10-14 02:43:19,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 02:43:19,480 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1055 transitions. [2024-10-14 02:43:19,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-14 02:43:19,482 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:19,483 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:19,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 02:43:19,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-14 02:43:19,683 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:19,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1883922310, now seen corresponding path program 1 times [2024-10-14 02:43:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:19,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792039935] [2024-10-14 02:43:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:19,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:19,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:19,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:19,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:19,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:20,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:20,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:43:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:20,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-14 02:43:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:20,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:20,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:20,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 02:43:20,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:20,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792039935] [2024-10-14 02:43:20,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792039935] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:20,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247954331] [2024-10-14 02:43:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:20,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:20,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:20,310 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:20,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 02:43:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:20,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 02:43:20,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 02:43:20,739 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:20,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247954331] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:20,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:20,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-10-14 02:43:20,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271087533] [2024-10-14 02:43:20,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:20,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 02:43:20,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:20,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 02:43:20,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-10-14 02:43:20,741 INFO L87 Difference]: Start difference. First operand 645 states and 1055 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 02:43:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:21,043 INFO L93 Difference]: Finished difference Result 1140 states and 1878 transitions. [2024-10-14 02:43:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 02:43:21,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2024-10-14 02:43:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:21,049 INFO L225 Difference]: With dead ends: 1140 [2024-10-14 02:43:21,049 INFO L226 Difference]: Without dead ends: 663 [2024-10-14 02:43:21,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-10-14 02:43:21,053 INFO L432 NwaCegarLoop]: 876 mSDtfsCounter, 113 mSDsluCounter, 5162 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6038 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:21,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6038 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 02:43:21,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-10-14 02:43:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 645. [2024-10-14 02:43:21,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 509 states have (on average 1.6660117878192535) internal successors, (848), 534 states have internal predecessors, (848), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-10-14 02:43:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1055 transitions. [2024-10-14 02:43:21,157 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1055 transitions. Word has length 86 [2024-10-14 02:43:21,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:21,158 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1055 transitions. [2024-10-14 02:43:21,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 02:43:21,158 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1055 transitions. [2024-10-14 02:43:21,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-14 02:43:21,160 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:21,160 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:21,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-14 02:43:21,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-14 02:43:21,360 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:21,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:21,361 INFO L85 PathProgramCache]: Analyzing trace with hash -532532581, now seen corresponding path program 1 times [2024-10-14 02:43:21,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:21,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474865982] [2024-10-14 02:43:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:21,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:21,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:21,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:21,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:21,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:21,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:21,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-14 02:43:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:21,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-14 02:43:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:21,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:21,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:21,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 02:43:21,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:21,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474865982] [2024-10-14 02:43:21,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474865982] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:21,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318512779] [2024-10-14 02:43:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:21,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:21,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:21,918 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:21,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 02:43:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:22,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 02:43:22,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 02:43:22,253 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:22,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318512779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:22,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:22,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-10-14 02:43:22,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847619255] [2024-10-14 02:43:22,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:22,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 02:43:22,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:22,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 02:43:22,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-14 02:43:22,255 INFO L87 Difference]: Start difference. First operand 645 states and 1055 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:22,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:22,455 INFO L93 Difference]: Finished difference Result 1192 states and 1963 transitions. [2024-10-14 02:43:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:43:22,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2024-10-14 02:43:22,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:22,461 INFO L225 Difference]: With dead ends: 1192 [2024-10-14 02:43:22,461 INFO L226 Difference]: Without dead ends: 645 [2024-10-14 02:43:22,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-14 02:43:22,465 INFO L432 NwaCegarLoop]: 882 mSDtfsCounter, 13 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:22,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2642 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:43:22,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2024-10-14 02:43:22,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2024-10-14 02:43:22,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 509 states have (on average 1.6581532416502947) internal successors, (844), 534 states have internal predecessors, (844), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-10-14 02:43:22,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1051 transitions. [2024-10-14 02:43:22,570 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1051 transitions. Word has length 86 [2024-10-14 02:43:22,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:22,571 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1051 transitions. [2024-10-14 02:43:22,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:22,572 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1051 transitions. [2024-10-14 02:43:22,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-14 02:43:22,573 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:22,573 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:22,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-14 02:43:22,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-14 02:43:22,774 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:22,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:22,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1322842786, now seen corresponding path program 1 times [2024-10-14 02:43:22,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:22,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615017275] [2024-10-14 02:43:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:22,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:22,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:22,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:22,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:23,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:23,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:23,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:43:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:23,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 02:43:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:23,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:23,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:23,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-14 02:43:23,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:23,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615017275] [2024-10-14 02:43:23,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615017275] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183256023] [2024-10-14 02:43:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:23,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:23,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:23,307 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:23,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 02:43:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:23,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 02:43:23,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-14 02:43:23,634 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:23,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183256023] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:23,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:23,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-14 02:43:23,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101848726] [2024-10-14 02:43:23,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:23,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 02:43:23,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:23,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 02:43:23,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:43:23,636 INFO L87 Difference]: Start difference. First operand 645 states and 1051 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:23,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:23,782 INFO L93 Difference]: Finished difference Result 1234 states and 2029 transitions. [2024-10-14 02:43:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 02:43:23,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2024-10-14 02:43:23,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:23,788 INFO L225 Difference]: With dead ends: 1234 [2024-10-14 02:43:23,788 INFO L226 Difference]: Without dead ends: 669 [2024-10-14 02:43:23,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:43:23,792 INFO L432 NwaCegarLoop]: 876 mSDtfsCounter, 7 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:23,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2617 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:43:23,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-10-14 02:43:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2024-10-14 02:43:23,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 533 states have (on average 1.6360225140712945) internal successors, (872), 558 states have internal predecessors, (872), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-10-14 02:43:23,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1079 transitions. [2024-10-14 02:43:23,884 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1079 transitions. Word has length 87 [2024-10-14 02:43:23,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:23,884 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 1079 transitions. [2024-10-14 02:43:23,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-14 02:43:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1079 transitions. [2024-10-14 02:43:23,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-14 02:43:23,886 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:23,886 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:23,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-14 02:43:24,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 02:43:24,087 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:24,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:24,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1025735312, now seen corresponding path program 1 times [2024-10-14 02:43:24,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:24,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726395269] [2024-10-14 02:43:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:24,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:24,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:24,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:24,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:24,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:24,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:24,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-14 02:43:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:24,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 02:43:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:24,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:24,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:24,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 02:43:24,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:24,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726395269] [2024-10-14 02:43:24,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726395269] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:24,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353466270] [2024-10-14 02:43:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:24,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:24,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:24,662 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:24,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 02:43:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:24,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 02:43:24,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 02:43:25,030 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:25,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353466270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:25,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:25,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-10-14 02:43:25,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733221455] [2024-10-14 02:43:25,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:25,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 02:43:25,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:25,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 02:43:25,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-10-14 02:43:25,033 INFO L87 Difference]: Start difference. First operand 669 states and 1079 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 02:43:25,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:25,258 INFO L93 Difference]: Finished difference Result 1170 states and 1910 transitions. [2024-10-14 02:43:25,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 02:43:25,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2024-10-14 02:43:25,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:25,265 INFO L225 Difference]: With dead ends: 1170 [2024-10-14 02:43:25,265 INFO L226 Difference]: Without dead ends: 693 [2024-10-14 02:43:25,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-10-14 02:43:25,268 INFO L432 NwaCegarLoop]: 870 mSDtfsCounter, 119 mSDsluCounter, 5124 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5994 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:25,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5994 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:43:25,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-10-14 02:43:25,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 669. [2024-10-14 02:43:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 533 states have (on average 1.6360225140712945) internal successors, (872), 558 states have internal predecessors, (872), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-10-14 02:43:25,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1079 transitions. [2024-10-14 02:43:25,381 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1079 transitions. Word has length 88 [2024-10-14 02:43:25,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:25,382 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 1079 transitions. [2024-10-14 02:43:25,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 02:43:25,382 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1079 transitions. [2024-10-14 02:43:25,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-14 02:43:25,384 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:25,384 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 02:43:25,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-14 02:43:25,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:25,584 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:25,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:25,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1399563392, now seen corresponding path program 1 times [2024-10-14 02:43:25,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:25,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773073828] [2024-10-14 02:43:25,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:25,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:25,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:25,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:25,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:25,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:25,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:25,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:26,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 02:43:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:26,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:26,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:26,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 02:43:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:26,059 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 02:43:26,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:26,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773073828] [2024-10-14 02:43:26,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773073828] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:26,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619862097] [2024-10-14 02:43:26,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:26,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:26,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:26,061 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:26,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-14 02:43:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:26,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 02:43:26,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 02:43:26,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:26,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619862097] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:26,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:26,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-10-14 02:43:26,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608119674] [2024-10-14 02:43:26,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:26,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 02:43:26,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:26,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 02:43:26,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-14 02:43:26,607 INFO L87 Difference]: Start difference. First operand 669 states and 1079 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 02:43:29,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:29,383 INFO L93 Difference]: Finished difference Result 2193 states and 3648 transitions. [2024-10-14 02:43:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 02:43:29,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2024-10-14 02:43:29,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:29,392 INFO L225 Difference]: With dead ends: 2193 [2024-10-14 02:43:29,392 INFO L226 Difference]: Without dead ends: 1721 [2024-10-14 02:43:29,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-14 02:43:29,394 INFO L432 NwaCegarLoop]: 581 mSDtfsCounter, 2796 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 3832 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2979 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 4372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 3832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:29,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2979 Valid, 1598 Invalid, 4372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 3832 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-14 02:43:29,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2024-10-14 02:43:29,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1534. [2024-10-14 02:43:29,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1209 states have (on average 1.674110835401158) internal successors, (2024), 1252 states have internal predecessors, (2024), 259 states have call successors, (259), 60 states have call predecessors, (259), 65 states have return successors, (268), 236 states have call predecessors, (268), 254 states have call successors, (268) [2024-10-14 02:43:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 2551 transitions. [2024-10-14 02:43:29,621 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 2551 transitions. Word has length 88 [2024-10-14 02:43:29,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:29,622 INFO L471 AbstractCegarLoop]: Abstraction has 1534 states and 2551 transitions. [2024-10-14 02:43:29,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-14 02:43:29,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 2551 transitions. [2024-10-14 02:43:29,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-10-14 02:43:29,626 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:29,626 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:43:29,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-14 02:43:29,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 02:43:29,827 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:29,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1162844207, now seen corresponding path program 1 times [2024-10-14 02:43:29,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:29,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954376659] [2024-10-14 02:43:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:29,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 02:43:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:43:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 02:43:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-14 02:43:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 02:43:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-14 02:43:30,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:30,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954376659] [2024-10-14 02:43:30,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954376659] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:30,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661456163] [2024-10-14 02:43:30,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:30,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:30,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:30,825 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:30,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-14 02:43:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:31,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 2074 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 02:43:31,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-14 02:43:31,313 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:31,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661456163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:31,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:31,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2024-10-14 02:43:31,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781698254] [2024-10-14 02:43:31,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:31,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:43:31,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:31,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:43:31,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:43:31,315 INFO L87 Difference]: Start difference. First operand 1534 states and 2551 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-14 02:43:31,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:31,877 INFO L93 Difference]: Finished difference Result 2895 states and 4918 transitions. [2024-10-14 02:43:31,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 02:43:31,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 139 [2024-10-14 02:43:31,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:31,887 INFO L225 Difference]: With dead ends: 2895 [2024-10-14 02:43:31,888 INFO L226 Difference]: Without dead ends: 1558 [2024-10-14 02:43:31,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-10-14 02:43:31,895 INFO L432 NwaCegarLoop]: 874 mSDtfsCounter, 854 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:31,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 2232 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 02:43:31,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2024-10-14 02:43:32,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1558. [2024-10-14 02:43:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1230 states have (on average 1.6747967479674797) internal successors, (2060), 1273 states have internal predecessors, (2060), 259 states have call successors, (259), 63 states have call predecessors, (259), 68 states have return successors, (271), 236 states have call predecessors, (271), 254 states have call successors, (271) [2024-10-14 02:43:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2590 transitions. [2024-10-14 02:43:32,122 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2590 transitions. Word has length 139 [2024-10-14 02:43:32,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:32,123 INFO L471 AbstractCegarLoop]: Abstraction has 1558 states and 2590 transitions. [2024-10-14 02:43:32,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-14 02:43:32,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2590 transitions. [2024-10-14 02:43:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-14 02:43:32,127 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:32,127 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:43:32,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-14 02:43:32,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 02:43:32,328 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:32,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:32,329 INFO L85 PathProgramCache]: Analyzing trace with hash -645717385, now seen corresponding path program 1 times [2024-10-14 02:43:32,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:32,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903692427] [2024-10-14 02:43:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:32,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:32,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:32,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:32,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:32,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:32,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:32,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:32,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 02:43:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:32,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:32,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:33,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:43:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:33,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:33,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:33,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-14 02:43:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:33,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-14 02:43:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:33,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:33,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:33,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-14 02:43:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:33,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-14 02:43:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:33,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-14 02:43:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-14 02:43:33,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:33,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903692427] [2024-10-14 02:43:33,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903692427] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:33,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378905516] [2024-10-14 02:43:33,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:33,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:33,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:33,119 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:33,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-14 02:43:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:33,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 2076 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 02:43:33,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-14 02:43:33,566 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:33,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378905516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:33,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:33,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2024-10-14 02:43:33,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090854820] [2024-10-14 02:43:33,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:33,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:43:33,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:33,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:43:33,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:43:33,568 INFO L87 Difference]: Start difference. First operand 1558 states and 2590 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-14 02:43:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:34,287 INFO L93 Difference]: Finished difference Result 2943 states and 4987 transitions. [2024-10-14 02:43:34,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 02:43:34,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2024-10-14 02:43:34,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:34,298 INFO L225 Difference]: With dead ends: 2943 [2024-10-14 02:43:34,299 INFO L226 Difference]: Without dead ends: 1582 [2024-10-14 02:43:34,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-10-14 02:43:34,307 INFO L432 NwaCegarLoop]: 871 mSDtfsCounter, 841 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:34,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 2229 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 02:43:34,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2024-10-14 02:43:34,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2024-10-14 02:43:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1251 states have (on average 1.6754596322941646) internal successors, (2096), 1294 states have internal predecessors, (2096), 259 states have call successors, (259), 66 states have call predecessors, (259), 71 states have return successors, (274), 236 states have call predecessors, (274), 254 states have call successors, (274) [2024-10-14 02:43:34,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2629 transitions. [2024-10-14 02:43:34,523 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2629 transitions. Word has length 141 [2024-10-14 02:43:34,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:34,524 INFO L471 AbstractCegarLoop]: Abstraction has 1582 states and 2629 transitions. [2024-10-14 02:43:34,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-14 02:43:34,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2629 transitions. [2024-10-14 02:43:34,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-10-14 02:43:34,529 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:34,529 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:43:34,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-14 02:43:34,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:34,730 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:34,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:34,730 INFO L85 PathProgramCache]: Analyzing trace with hash 834269750, now seen corresponding path program 1 times [2024-10-14 02:43:34,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:34,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712633374] [2024-10-14 02:43:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:34,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:34,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:34,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:34,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:34,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:34,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:34,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 02:43:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-14 02:43:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 02:43:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-14 02:43:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 02:43:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-14 02:43:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 02:43:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-14 02:43:35,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:35,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712633374] [2024-10-14 02:43:35,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712633374] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:35,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323961221] [2024-10-14 02:43:35,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:35,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:35,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:35,550 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:35,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-14 02:43:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:35,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 2078 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 02:43:35,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-14 02:43:36,026 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:36,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323961221] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:36,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:36,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-10-14 02:43:36,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723451787] [2024-10-14 02:43:36,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:36,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 02:43:36,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:36,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 02:43:36,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:43:36,028 INFO L87 Difference]: Start difference. First operand 1582 states and 2629 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-10-14 02:43:38,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:38,815 INFO L93 Difference]: Finished difference Result 4238 states and 7099 transitions. [2024-10-14 02:43:38,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 02:43:38,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 142 [2024-10-14 02:43:38,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:38,837 INFO L225 Difference]: With dead ends: 4238 [2024-10-14 02:43:38,838 INFO L226 Difference]: Without dead ends: 2695 [2024-10-14 02:43:38,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-10-14 02:43:38,848 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 1671 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 5130 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 5393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 5130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:38,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 1927 Invalid, 5393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 5130 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-14 02:43:38,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2024-10-14 02:43:39,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2483. [2024-10-14 02:43:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 1937 states have (on average 1.6597831698502838) internal successors, (3215), 1989 states have internal predecessors, (3215), 425 states have call successors, (425), 101 states have call predecessors, (425), 120 states have return successors, (478), 403 states have call predecessors, (478), 420 states have call successors, (478) [2024-10-14 02:43:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 4118 transitions. [2024-10-14 02:43:39,190 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 4118 transitions. Word has length 142 [2024-10-14 02:43:39,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:39,190 INFO L471 AbstractCegarLoop]: Abstraction has 2483 states and 4118 transitions. [2024-10-14 02:43:39,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-10-14 02:43:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 4118 transitions. [2024-10-14 02:43:39,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-14 02:43:39,196 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:39,196 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:43:39,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-14 02:43:39,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:39,398 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:39,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1063959183, now seen corresponding path program 1 times [2024-10-14 02:43:39,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:39,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004477455] [2024-10-14 02:43:39,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:39,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:39,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:39,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:39,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:39,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:39,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:39,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:39,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 02:43:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:39,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:39,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:40,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:43:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:40,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:40,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:40,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 02:43:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:40,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-14 02:43:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:40,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:40,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:40,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 02:43:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:40,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-14 02:43:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:40,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-14 02:43:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-14 02:43:40,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:40,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004477455] [2024-10-14 02:43:40,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004477455] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:40,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730971965] [2024-10-14 02:43:40,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:40,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:40,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:40,253 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:40,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-14 02:43:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:40,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 2075 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 02:43:40,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-14 02:43:40,706 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:40,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730971965] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:40,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:40,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2024-10-14 02:43:40,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969403785] [2024-10-14 02:43:40,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:40,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:43:40,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:40,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:43:40,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:43:40,708 INFO L87 Difference]: Start difference. First operand 2483 states and 4118 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-14 02:43:41,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:41,391 INFO L93 Difference]: Finished difference Result 4817 states and 8134 transitions. [2024-10-14 02:43:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 02:43:41,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 143 [2024-10-14 02:43:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:41,408 INFO L225 Difference]: With dead ends: 4817 [2024-10-14 02:43:41,408 INFO L226 Difference]: Without dead ends: 2531 [2024-10-14 02:43:41,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-10-14 02:43:41,420 INFO L432 NwaCegarLoop]: 868 mSDtfsCounter, 832 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:41,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 2226 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 02:43:41,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2024-10-14 02:43:41,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2531. [2024-10-14 02:43:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 1979 states have (on average 1.6609398686205155) internal successors, (3287), 2031 states have internal predecessors, (3287), 425 states have call successors, (425), 107 states have call predecessors, (425), 126 states have return successors, (483), 403 states have call predecessors, (483), 420 states have call successors, (483) [2024-10-14 02:43:41,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 4195 transitions. [2024-10-14 02:43:41,840 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 4195 transitions. Word has length 143 [2024-10-14 02:43:41,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:41,841 INFO L471 AbstractCegarLoop]: Abstraction has 2531 states and 4195 transitions. [2024-10-14 02:43:41,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-14 02:43:41,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 4195 transitions. [2024-10-14 02:43:41,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-14 02:43:41,848 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:41,848 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:43:41,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-14 02:43:42,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:42,049 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:42,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:42,049 INFO L85 PathProgramCache]: Analyzing trace with hash -443107711, now seen corresponding path program 1 times [2024-10-14 02:43:42,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:42,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997624736] [2024-10-14 02:43:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:42,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 02:43:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:43:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-14 02:43:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-14 02:43:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-14 02:43:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-14 02:43:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 02:43:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-14 02:43:42,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:42,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997624736] [2024-10-14 02:43:42,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997624736] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:42,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906372406] [2024-10-14 02:43:42,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:42,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:42,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:42,804 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:42,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-14 02:43:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:43,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 02:43:43,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-14 02:43:43,274 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:43,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906372406] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:43,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:43,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2024-10-14 02:43:43,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353008063] [2024-10-14 02:43:43,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:43,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:43:43,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:43,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:43:43,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-14 02:43:43,276 INFO L87 Difference]: Start difference. First operand 2531 states and 4195 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-14 02:43:43,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:43,928 INFO L93 Difference]: Finished difference Result 4913 states and 8272 transitions. [2024-10-14 02:43:43,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 02:43:43,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 145 [2024-10-14 02:43:43,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:43,950 INFO L225 Difference]: With dead ends: 4913 [2024-10-14 02:43:43,951 INFO L226 Difference]: Without dead ends: 2579 [2024-10-14 02:43:43,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-14 02:43:43,963 INFO L432 NwaCegarLoop]: 865 mSDtfsCounter, 838 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:43,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 2223 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 02:43:43,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2024-10-14 02:43:44,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2579. [2024-10-14 02:43:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 2021 states have (on average 1.6620484908461157) internal successors, (3359), 2073 states have internal predecessors, (3359), 425 states have call successors, (425), 113 states have call predecessors, (425), 132 states have return successors, (488), 403 states have call predecessors, (488), 420 states have call successors, (488) [2024-10-14 02:43:44,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 4272 transitions. [2024-10-14 02:43:44,348 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 4272 transitions. Word has length 145 [2024-10-14 02:43:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:44,348 INFO L471 AbstractCegarLoop]: Abstraction has 2579 states and 4272 transitions. [2024-10-14 02:43:44,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-14 02:43:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 4272 transitions. [2024-10-14 02:43:44,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-14 02:43:44,352 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:44,353 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:43:44,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-14 02:43:44,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-14 02:43:44,553 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:44,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:44,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1016264049, now seen corresponding path program 1 times [2024-10-14 02:43:44,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:44,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749068063] [2024-10-14 02:43:44,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:44,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:44,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:44,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:44,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:44,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:44,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:44,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 02:43:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:43:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-14 02:43:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 02:43:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-14 02:43:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-14 02:43:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-14 02:43:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,466 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-14 02:43:45,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:45,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749068063] [2024-10-14 02:43:45,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749068063] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:45,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068582940] [2024-10-14 02:43:45,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:45,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:45,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:45,468 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:45,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-14 02:43:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:45,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 2079 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 02:43:45,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-14 02:43:45,984 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:45,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068582940] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:45,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:45,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2024-10-14 02:43:45,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063719624] [2024-10-14 02:43:45,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:45,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:43:45,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:45,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:43:45,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:43:45,986 INFO L87 Difference]: Start difference. First operand 2579 states and 4272 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-14 02:43:46,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:46,630 INFO L93 Difference]: Finished difference Result 2685 states and 4453 transitions. [2024-10-14 02:43:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:43:46,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 147 [2024-10-14 02:43:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:46,650 INFO L225 Difference]: With dead ends: 2685 [2024-10-14 02:43:46,650 INFO L226 Difference]: Without dead ends: 2670 [2024-10-14 02:43:46,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:43:46,654 INFO L432 NwaCegarLoop]: 883 mSDtfsCounter, 828 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:46,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 2259 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 02:43:46,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2024-10-14 02:43:47,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2585. [2024-10-14 02:43:47,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2585 states, 2027 states have (on average 1.6600888011840158) internal successors, (3365), 2079 states have internal predecessors, (3365), 425 states have call successors, (425), 113 states have call predecessors, (425), 132 states have return successors, (488), 403 states have call predecessors, (488), 420 states have call successors, (488) [2024-10-14 02:43:47,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 4278 transitions. [2024-10-14 02:43:47,089 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 4278 transitions. Word has length 147 [2024-10-14 02:43:47,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:47,089 INFO L471 AbstractCegarLoop]: Abstraction has 2585 states and 4278 transitions. [2024-10-14 02:43:47,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-14 02:43:47,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 4278 transitions. [2024-10-14 02:43:47,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-14 02:43:47,093 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:47,093 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:43:47,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-14 02:43:47,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-14 02:43:47,294 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:47,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2077014372, now seen corresponding path program 1 times [2024-10-14 02:43:47,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:47,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692076047] [2024-10-14 02:43:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:47,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:47,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:47,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:47,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:47,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:47,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:47,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:47,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 02:43:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:47,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:47,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:48,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:43:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:48,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:48,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:48,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-14 02:43:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:48,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 02:43:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:48,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:48,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:48,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-14 02:43:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:48,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-14 02:43:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:48,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-14 02:43:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:48,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-14 02:43:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-14 02:43:48,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:48,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692076047] [2024-10-14 02:43:48,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692076047] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:48,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19003691] [2024-10-14 02:43:48,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:48,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:48,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:48,065 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:48,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-14 02:43:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:48,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 2092 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 02:43:48,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-14 02:43:48,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:48,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19003691] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:48,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:48,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-10-14 02:43:48,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189168857] [2024-10-14 02:43:48,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:48,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 02:43:48,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:48,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 02:43:48,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-10-14 02:43:48,517 INFO L87 Difference]: Start difference. First operand 2585 states and 4278 transitions. Second operand has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-14 02:43:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:49,113 INFO L93 Difference]: Finished difference Result 2775 states and 4554 transitions. [2024-10-14 02:43:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 02:43:49,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) Word has length 152 [2024-10-14 02:43:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:49,126 INFO L225 Difference]: With dead ends: 2775 [2024-10-14 02:43:49,127 INFO L226 Difference]: Without dead ends: 2760 [2024-10-14 02:43:49,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:43:49,129 INFO L432 NwaCegarLoop]: 891 mSDtfsCounter, 838 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 3490 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:49,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 3490 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 02:43:49,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2024-10-14 02:43:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2739. [2024-10-14 02:43:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 2149 states have (on average 1.6551884597487203) internal successors, (3557), 2201 states have internal predecessors, (3557), 441 states have call successors, (441), 131 states have call predecessors, (441), 148 states have return successors, (507), 417 states have call predecessors, (507), 436 states have call successors, (507) [2024-10-14 02:43:49,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 4505 transitions. [2024-10-14 02:43:49,504 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 4505 transitions. Word has length 152 [2024-10-14 02:43:49,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:49,504 INFO L471 AbstractCegarLoop]: Abstraction has 2739 states and 4505 transitions. [2024-10-14 02:43:49,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-14 02:43:49,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 4505 transitions. [2024-10-14 02:43:49,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-14 02:43:49,509 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:49,509 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:43:49,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-14 02:43:49,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:49,711 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:49,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:49,711 INFO L85 PathProgramCache]: Analyzing trace with hash -609794903, now seen corresponding path program 1 times [2024-10-14 02:43:49,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:49,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688366055] [2024-10-14 02:43:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:49,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:49,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:49,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:49,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:49,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-14 02:43:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:49,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:49,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-14 02:43:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:43:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-14 02:43:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 02:43:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-14 02:43:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-14 02:43:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-14 02:43:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-14 02:43:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-14 02:43:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-14 02:43:50,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:50,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688366055] [2024-10-14 02:43:50,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688366055] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:50,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962530374] [2024-10-14 02:43:50,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:50,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:50,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:50,521 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:50,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-14 02:43:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:50,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 2122 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 02:43:50,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-14 02:43:50,945 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:50,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962530374] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:50,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:50,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2024-10-14 02:43:50,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652986515] [2024-10-14 02:43:50,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:50,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 02:43:50,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:50,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 02:43:50,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-14 02:43:50,947 INFO L87 Difference]: Start difference. First operand 2739 states and 4505 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-10-14 02:43:51,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:51,429 INFO L93 Difference]: Finished difference Result 5458 states and 8986 transitions. [2024-10-14 02:43:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:43:51,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2024-10-14 02:43:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:51,442 INFO L225 Difference]: With dead ends: 5458 [2024-10-14 02:43:51,442 INFO L226 Difference]: Without dead ends: 2709 [2024-10-14 02:43:51,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:43:51,451 INFO L432 NwaCegarLoop]: 884 mSDtfsCounter, 7 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:51,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2645 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:43:51,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2024-10-14 02:43:51,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 2709. [2024-10-14 02:43:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2709 states, 2122 states have (on average 1.655042412818096) internal successors, (3512), 2172 states have internal predecessors, (3512), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2024-10-14 02:43:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2709 states to 2709 states and 4456 transitions. [2024-10-14 02:43:51,860 INFO L78 Accepts]: Start accepts. Automaton has 2709 states and 4456 transitions. Word has length 161 [2024-10-14 02:43:51,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:51,861 INFO L471 AbstractCegarLoop]: Abstraction has 2709 states and 4456 transitions. [2024-10-14 02:43:51,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-10-14 02:43:51,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2709 states and 4456 transitions. [2024-10-14 02:43:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-14 02:43:51,865 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:51,865 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:43:51,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-14 02:43:52,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:52,066 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:52,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:52,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1036536404, now seen corresponding path program 1 times [2024-10-14 02:43:52,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:52,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824702056] [2024-10-14 02:43:52,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:52,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:52,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:52,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:52,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:52,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 02:43:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:52,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:52,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:52,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 02:43:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:52,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:52,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:53,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:43:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:53,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:53,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:53,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-14 02:43:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:53,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 02:43:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:53,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:53,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:53,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-14 02:43:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:53,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-14 02:43:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:53,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-14 02:43:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:53,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-14 02:43:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:53,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-14 02:43:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-14 02:43:53,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:53,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824702056] [2024-10-14 02:43:53,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824702056] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:53,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362835876] [2024-10-14 02:43:53,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:53,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:53,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:53,045 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:53,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-14 02:43:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:53,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 2125 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 02:43:53,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-14 02:43:53,464 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:53,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362835876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:53,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:53,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 13 [2024-10-14 02:43:53,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512477666] [2024-10-14 02:43:53,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:53,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 02:43:53,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:53,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 02:43:53,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-14 02:43:53,465 INFO L87 Difference]: Start difference. First operand 2709 states and 4456 transitions. Second operand has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2024-10-14 02:43:53,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:53,890 INFO L93 Difference]: Finished difference Result 5392 states and 8881 transitions. [2024-10-14 02:43:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 02:43:53,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 163 [2024-10-14 02:43:53,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:53,903 INFO L225 Difference]: With dead ends: 5392 [2024-10-14 02:43:53,903 INFO L226 Difference]: Without dead ends: 2708 [2024-10-14 02:43:53,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-10-14 02:43:53,910 INFO L432 NwaCegarLoop]: 900 mSDtfsCounter, 119 mSDsluCounter, 4376 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5276 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:53,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5276 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:43:53,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2024-10-14 02:43:54,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2688. [2024-10-14 02:43:54,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2688 states, 2101 states have (on average 1.655402189433603) internal successors, (3478), 2151 states have internal predecessors, (3478), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2024-10-14 02:43:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2688 states to 2688 states and 4422 transitions. [2024-10-14 02:43:54,281 INFO L78 Accepts]: Start accepts. Automaton has 2688 states and 4422 transitions. Word has length 163 [2024-10-14 02:43:54,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:54,281 INFO L471 AbstractCegarLoop]: Abstraction has 2688 states and 4422 transitions. [2024-10-14 02:43:54,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2024-10-14 02:43:54,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2688 states and 4422 transitions. [2024-10-14 02:43:54,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-14 02:43:54,285 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:54,285 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:43:54,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-10-14 02:43:54,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-14 02:43:54,487 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:54,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:54,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1363401423, now seen corresponding path program 1 times [2024-10-14 02:43:54,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:54,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167458951] [2024-10-14 02:43:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:54,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:54,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:54,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:54,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:54,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-14 02:43:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:54,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:54,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-14 02:43:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:43:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-14 02:43:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 02:43:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-14 02:43:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-14 02:43:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-14 02:43:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-14 02:43:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-14 02:43:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 02:43:55,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:55,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167458951] [2024-10-14 02:43:55,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167458951] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:43:55,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534794692] [2024-10-14 02:43:55,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:55,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:43:55,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:43:55,377 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:43:55,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-14 02:43:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:55,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 02:43:55,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:43:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-14 02:43:55,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:43:55,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534794692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:55,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:43:55,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-10-14 02:43:55,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709652801] [2024-10-14 02:43:55,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:55,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 02:43:55,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:55,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 02:43:55,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-14 02:43:55,792 INFO L87 Difference]: Start difference. First operand 2688 states and 4422 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-10-14 02:43:56,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:43:56,349 INFO L93 Difference]: Finished difference Result 5373 states and 8850 transitions. [2024-10-14 02:43:56,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:43:56,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 165 [2024-10-14 02:43:56,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:43:56,365 INFO L225 Difference]: With dead ends: 5373 [2024-10-14 02:43:56,366 INFO L226 Difference]: Without dead ends: 2710 [2024-10-14 02:43:56,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 02:43:56,374 INFO L432 NwaCegarLoop]: 865 mSDtfsCounter, 127 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:43:56,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2522 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:43:56,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2024-10-14 02:43:56,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 2688. [2024-10-14 02:43:56,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2688 states, 2101 states have (on average 1.654926225606854) internal successors, (3477), 2151 states have internal predecessors, (3477), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2024-10-14 02:43:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2688 states to 2688 states and 4421 transitions. [2024-10-14 02:43:56,694 INFO L78 Accepts]: Start accepts. Automaton has 2688 states and 4421 transitions. Word has length 165 [2024-10-14 02:43:56,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:43:56,694 INFO L471 AbstractCegarLoop]: Abstraction has 2688 states and 4421 transitions. [2024-10-14 02:43:56,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-10-14 02:43:56,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2688 states and 4421 transitions. [2024-10-14 02:43:56,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-14 02:43:56,699 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:43:56,699 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:43:56,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-10-14 02:43:56,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-14 02:43:56,900 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:43:56,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:43:56,900 INFO L85 PathProgramCache]: Analyzing trace with hash -462102642, now seen corresponding path program 1 times [2024-10-14 02:43:56,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:43:56,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445941510] [2024-10-14 02:43:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:43:56,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:43:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 02:43:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-14 02:43:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-14 02:43:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 02:43:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 02:43:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-14 02:43:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-14 02:43:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 02:43:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-14 02:43:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-14 02:43:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-14 02:43:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-14 02:43:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-14 02:43:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:43:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-14 02:43:57,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:43:57,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445941510] [2024-10-14 02:43:57,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445941510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:43:57,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:43:57,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 02:43:57,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446064529] [2024-10-14 02:43:57,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:43:57,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 02:43:57,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:43:57,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 02:43:57,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:43:57,715 INFO L87 Difference]: Start difference. First operand 2688 states and 4421 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)